WO2005091931A2 - Three-dimensional reverse tanking membranes - Google Patents
Three-dimensional reverse tanking membranes Download PDFInfo
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- WO2005091931A2 WO2005091931A2 PCT/US2005/006704 US2005006704W WO2005091931A2 WO 2005091931 A2 WO2005091931 A2 WO 2005091931A2 US 2005006704 W US2005006704 W US 2005006704W WO 2005091931 A2 WO2005091931 A2 WO 2005091931A2
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- WIPO (PCT)
- Prior art keywords
- waterproofing
- shaped
- membrane
- sheet
- adhesive layer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
Definitions
- the present invention relates to reverse tanking waterproofing membranes which bond to freshly poured concrete, and more particularly to membranes having three-dimensional contours for creating unified moisture barriers in and around detail areas and other surface irregularities.
- Patent 4,994,328 of Cogliano and US Patent 5,316,848 of Bartlett et al. (non-bituminous synthetic adhesive).
- a "formwork” i.e., concrete mold usually formed by wooden boards joined together. Consequently, the waterproofing adhesive layer faces outwards.
- a concrete structure is created by casting concrete against the membrane-covered formwork surface, and this may be referred to as "post cast” or "post applied” concrete.
- the adhesive layer is covered by an elastomeric protective coating layer, a particle coating layer, or mixture or arrangement of both (i.e., either individually, mixed together as one layer, or arranged as discrete layers), to protect the adhesive from dirt and damage.
- This protective coating layer (whether of polymeric or particle coating) also operates to decrease the tack of the adhesive.
- the outer surface is further protected by a release sheet liner (that must be removed before fresh concrete is poured against the adhesive/ protective coating layers). After curing, the concrete is bonded with the adhesive/ protective coating layers, and thus a waterproofing bond is achieved in "reverse" order.
- FIG. 1 illustrates the present process used in the industry for waterproofing "tiebacks" on concrete formworks.
- Drainage mats or sheets which usually involve a fabric attached to a cuspated core sheet, are placed against the wooden formwork, and covered by sheets of reverse tanking waterproofing membrane, previously described above.
- Such sheet materials are available from Grace Construction Products, Cambridge, Massachusetts, under the trademarks HYDRODUCT® (drainage) and PREPRUFE® (waterproofing membranes). These sheet materials are required to be cut and arranged to surround the area on the formwork occupied by the tieback, which can be as large as a man's chest.
- a wooden or metal box must be fabricated and fitted over the tieback.
- the box is fastened to the formwork, such as by screws and brackets, with a bead of adhesive for sealing around the edges against the formwork.
- the box is filled with liquid mastic or mortar cement to prevent twisting or collapse of the box due to the poured concrete.
- the box is covered with waterproofing strips.
- the strips are available as a double-sided adhesive "tape" from Grace Construction Products under the PREPRUFE® brand name.
- One side has a tacky adhesive that sticks onto the box and surrounding formwork; the other side has a coated adhesive layer for bonding to post cast concrete.
- Figs. 1 and 2 illustrate a finished tape "box" shape, the actual waterproofing of the box with strips requires painstaking labor.
- the tape strips must be overlapped to provide a continuous barrier over and around the tieback. Fabricating, fastening, and waterproofing each box at a tie back detail requires about 30 minutes or more. In formwork installations that exceed one thousand square feet, one may confront one hundred tiebacks.
- the present invention provides "reverse tanking" waterproofing for detail areas and other surface irregularities.
- An exemplary waterproofing membrane of the invention having a three-dimensional contour surrounded entirely or partially by a flat collar portion, can be positioned over tiebacks or other surface irregularities, and seamed with conventional reverse tanking membranes to provide a continuous waterproofing barrier.
- such shaped membranes are used in combination with correspondingly shaped molded support structures to prevent the membranes from collapsing under the weight of post cast concrete (i.e., concrete which is cast against them after they are installed).
- a molded rigid plastic or metal dome is positioned over a tieback and fastened to the formwork, and a "shaped" waterproofing membrane having a corresponding dome shape is fitted over the support and seamed with adjacent "sheet-form” waterproofing membranes on the formwork to provide a continuous moisture barrier.
- shaped will be used to define the reverse tanking membranes of the invention, in contrast to the term "sheet-form” which will be used to define conventional reverse tanking membranes (typically supplied in roll form).
- a waterproofing membrane having a three- dimensional shape such as a circular- or conical-shaped sleeve, surrounded by a contiguous flat collar portion, may be employed for waterproofing around penetrations such as pipes and pile caps.
- Three-dimensional shaped waterproofing membranes having shapes such as domes, cones, cylinders, pyramids, or other three-dimensional forms, will save several steps otherwise needed for providing a continuous barrier at penetration joints.
- Such membranes may have at least one or both major faces coated with one or more conventional waterproofing adhesive layers (e.g., rubberized asphalt, synthetic polymeric adhesives, clay-based adhesives, etc.) which are operative to bond with fresh concrete.
- An exemplary method for making shaped membranes comprises: providing a laminate having a carrier support sheet and, contiguous therewith, a continuous pressure-sensitive waterproofing adhesive layer, with optionally a protective polymeric coating layer and/ or particle coating layer over the adhesive layer; and molding the laminate as one piece to provide a shaped waterproofing membrane having a three-dimensional contour that is entirely or partially surrounded by a flat collar portion.
- the carrier support sheet comprises a polyolefin blend that is operative to be molded below 300°F.
- the support sheet comprises a blend of LDPE and HDPE resin
- the pressure-sensitive adhesive is a non-bituminous synthetic adhesive (e.g., SIS).
- SIS non-bituminous synthetic adhesive
- Fig. 1 is an exploded, side-view plan diagram of a PRIOR ART method for waterproofing detailed areas, such as tiebacks, in a concrete formwork
- Fig. 2 is another perspective plan diagram of the PRIOR ART method illustrated in Fig. 1
- Fig. 3 is diagram of an exemplary shaped waterproofing membrane of the invention shown with an optional exemplary shaped supporting device for covering a tieback or other surface irregularity
- Fig. 4 is a " diagram of another exemplary shaped waterproofing membrane of the invention.
- cementitious compositions such as concrete or mortar cement, which is applied this way to the waterproofing membranes, are sometimes referred to as being "post cast” or “post applied.”
- pastes are mixtures composed of a hydratable cement binder (usually, but not exclusively, Portland cement, masonry cement, or mortar cement).
- Mortars are pastes additionally including fine aggregate (e.g., sand), and concrete are mortars additionally including coarse aggregate (e.g., crushed gravel, stone).
- Cementitious compositions are typically formed by mixing hydratable cement, water, and fine and/ or coarse aggregate.
- an exemplary "shaped" waterproofing membrane 10 and optional exemplary supporting structure 30 can be used to provide a continuous waterproofing barrier over a tieback 40 or other surface detail on the construction surface before concrete is post cast against it. As illustrated in the magnified view (enlarged circle) in Fig.
- the waterproofing membrane 10 comprises at least one carrier support sheet 12 having first and second major opposing faces, and, attached to a first major face thereof, at least one continuous pressure-sensitive waterproofing adhesive layer 14 operative to bond with post cast concrete or mortar.
- a protective layer 16 such as an elastomer coating, a particulate layer, or a mixture thereof (e.g., particles mixed into the elastomer) or arrangement thereof (e.g., discrete particle layer on top of or partially embedded into an elastomer layer) operates to protect the adhesive layer 14 from dirt and debris.
- the carrier support sheet 12, pressure-sensitive waterproofing adhesive layer 14, and optional protective layer 16 of the may comprise materials and incorporate thickness dimensions taught in US Patents 5,316,848 and 5,496,615 of Bartlett et al., wherein it was taught that the carrier support sheet may be fabricated from a thermoplastic, rubber, or metal in the form of a continuous film, a woven material, or a non-woven material.
- Thermoplastics particularly suited for use in the present invention include high density polyethylene (HDPE), polyethylene teraphthate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyamides (PA), or combinations thereof.
- HDPE high density polyethylene
- PET polyethylene teraphthate
- PS polystyrene
- PVC polyvinyl chloride
- PA polyamides
- a carrier support sheet 12 in the form of a continuous film made from a polyolefin blend.
- the blend comprises low density polyethylene (LDPE) and high density polyethylene (HDPE).
- the carrier support sheet 12 can be made by sheet-extruding the polymer or polymer blend through a sheet die and/ or calendaring the sheet between opposed rollers to achieve a relatively uniform thickness.
- Use of LDPE in the polyolefin blend is preferred due to increased ease of thermal molding (thernaoforming).
- a protective layer 16 may be possible for the carrier support sheet
- VLDPE very low density polyethylene
- HDPE high density polyethylene
- polypropylene polypropylene
- thermal molding to obtain a three-dimensional shaped waterproofing membrane 10 from a unified laminate will save time and provide economic advantages.
- the thickness of the individual layers may change during thernioforming, which is the preferred method of making the shaped membranes, and so initial thicknesses of the layers should be chosen with this fact in mind.
- the waterproofing membrane laminate 10 can be manufactured by coating or extruding onto a paper or plastic release sheet (not shown) first the protective layer 16 (e.g., polymer coating), followed by coating or extruding the waterproofing adhesive layer 14 (e.g., SIS), and then the resultant laminate can be applied to the carrier support sheet 14; and the release sheet can be removed just before the membrane laminate 12/14/16 is thermoformed to provide the shaped waterproofing membrane 10.
- the adhesive 14 and protective 16 layers can be coated or extruded directly onto the carrier support sheet 12, and then the release sheet liner (not shown) can be applied, such as by calendaring it onto the laminate whereby the calendaring operation ensures a uniform total thickness of the membrane.
- the release sheet liner is removed before molding (e.g., thermoforming) of the membrane to provide the three-dimensional profile.
- the adhesive 14 and protective coating layer 16 can be co- extruded simultaneously between a carrier support sheet 12 and release sheet.
- a continuous operation may involve co-extruding the adhesive and protective coating layers between the carrier support sheet 14 and release liner as they are being bed between rollers which laminate them together.
- the release sheet is used for purposes of making the laminate and protecting the adhesive/ protecting coatings until the thermoforming stage, whereupon it is preferably removed and discarded.
- the thermoforming stage should preferably involve temperatures under 300°F in order to prevent damage to the pressure-sensitive adhesive layer (and protecting coating layer) which must retain integrity, sufficient thickness, and ability to bond with and to waterproof post cast concrete. It is preferable to subject the carrier support sheet 12 side of the membrane 10 to a temperature that is higher than the adhesive layer 14 side because it is the carrier support sheet 12 that primarily requires thermal softening for purposes of shaping, whereas the adhesive layer is more easily conformable and would require less heat for molding.
- the thickness of the carrier support sheet 12 is preferably 10-150 mils thick and more preferably 30-80 mils thick.
- the carrier support sheet 12 may have an average diameter and height of 10 cm - 100 cm or larger, depending on the size of the surface detail, and is entirely or partially surrounded by a flat collar portion 13.
- the thickness and materials of the carrier support sheet 12 are chosen such that, in combination with the waterproofing adhesive layer 14 and protective coating layer 16, the average temperature needed for thermoforming the shaped membrane 10 (as a laminate) does not exceed 300°F (all temperatures herein being described in degrees Fahrenheit).
- the pressure-sensitive waterproofing adhesive layer 14 may comprise a bituminous adhesive, the present inventors prefer using synthetic non-bituminous adhesives.
- Such synthetic adhesives may include butyl rubber, polyisobutylene, polyisobutyl rubber, acrylic (or acrylate), vinyl ether based adhesives, styrene-isoprene-styrene (SIS), styrene-ethylene-butylene- styrene based (SEBS), styrene-butadiene-styrene (SBS), or mixtures thereof.
- Another possible adhesive is ethylene propylene diene monomer. Most preferred, however, are pressure-sensitive hot-melt adhesive block copolymers of SIS.
- Preferred adhesive layers should also withstand melting temperatures in the range between 160°F and 300°F (for a duration of between 2 seconds to 2 minutes) without losing their continuous layer form and without the adhesive layer 14 (and optional protective coating layer 16) losing the ability to provide a bond with post cast concrete.
- the pressure sensitive adhesive layer 14 can optionally contain typical additives, such as light absorbers (i.e., carbon black, benzotriazoles, etc.), light stabilizers (i.e. hindered amines, benzophenones), antioxidants (i.e. hindered phenols), fillers (i.e. calcium carbonate, silica, titanium dioxide, etc.), plasticizers, rheological additives, and rnixtures thereof.
- light absorbers i.e., carbon black, benzotriazoles, etc.
- light stabilizers i.e. hindered amines, benzophenones
- antioxidants i.e. hindered phenols
- fillers i.e. calcium carbonate
- Preferred synthetic adhesive layers contain light absorbers, light stabilizers, and antioxidants. As discussed in US Patents 5,316,848 and 5,496,615, the adhesion to post cast concrete is improved when the synthetic adhesive layer 14 has a penetration greater than about 30 decimillimeters (dmm) (150 g, 5 sec, 70°F) as measured according to ASTM D 5-73, incorporated herein by reference.
- the "adhesive" nature of the synthetic pressure sensitive adhesive 14 has the added benefit in that side laps and end laps of the membrane 10 are easily formed.
- the average thickness of the synthetic adhesive layer may be 10-150 mils, more preferably 20-100 mils, with 50-100 mils being most preferred.
- the shaped waterproofing membrane 10 further comprises a protective coating layer 16 to decrease tack and to protect the adhesive 14 from dust, dirt and the elements (particularly sunlight). At the same time, the protective layer 16 does not defeat the ability of the membrane 10 to form a fully adhered strong bond with post cast concrete.
- the protective coating layer 16 may comprise, for example, a polymer coating, a layer of particulate matter, or a mixture thereof.
- Exemplary polymer coatings may comprise sytrene butadiene rubber based (SBR) coatings, carboxylated SBR based coatings, acrylic based coatings (e.g., an acrylate), polyvinylidene chloride based (PVDC) coatings, polyvinyl chloride based (PVC) coatings, ethylene vinyl acetate copolymer based (EVA) coatings, ethylene ethyl acetate copolymer based (EEA) coatings, polychloroprene based coatings, polyester based coatings, polyurethane based coatings, styrene-isoprene-styrene based (SIS) coatings, styrene- butadiene-styrene based (SBS) coatings, styrene-ethylene butylene-styrene based (SEBS) coatings , or a mixture thereof.
- SBR sytrene buta
- Preferred protective coating layers 16 are acrylic based coatings, and most preferred are styrene butylacrylate based coatings.
- Protective layers 16 which are elastomeric in nature are preferred.
- the term "elastomeric” means and refers to an elastic polymer having a property similar to those of vulcanized natural rubber; namely, to stretch when pulled and to retract rapidly to approximately original length when released.
- Elastomeric acrylic based coatings are preferred, and elastomeric styrene butylacrylate based coatings are most preferred.
- the average thickness of the protective layer 16 may be anywhere from 1-80 mils, and more preferably 5-60 mils.
- the protective layer 16 may optionally contain typical additives and have a penetration value similar to those described for the pressure-sensitive adhesive layer 14 described above.
- Protecting layers 16 made from polymeric materials e.g., butyl acrylate
- the protective layer 16 may comprise inorganic particles which are roll pressed onto the waterproofing adhesive layer 14 (where no polymer protective coating is used) and/ or mixed into the a polymer protective coating 16 material.
- Wiercinski and Seth disclosed particles of calcium carbonate, cement, talc, sand, granite dust, slate dust, clay, titanium dioxide, and carbon black; while Wiercinski and Seth disclosed particles of aluminum oxide trihydrate, silica dioxide, fly ash, blast furnace slag, silica fume, alkali or alkaline earth metal nitrites, nitrates, halides, sulfates, hydroxides, carboxylates, silicates, aluminate, or mixtures thereof. Combinations of such particles (e.g., calcium carbonate and talc) are also contemplated.
- the protective coating 16 layer may be made of a polymeric coating applied as a liquid and allowedtb dry; may be made of a mixture of polymeric coating material having particulates and/ or other additives incorporated into the polymer; or may be made solely of particles that are applied by rolling them onto and embedding the particles entirely or partially into the outer adhesive layer 14 and/ or outer polymer coating layer 16.
- an exemplary shaped waterproofing membrane 10 preferably has a three-dimensional contour 11 such as as a dome, surrounded partially or entirely by a flat collar portion 13.
- the flat collar portion 13 has edges (such as designated at 15) which are preferably straight in nature to permit a waterproofing tape to be used conveniently to provide a water-tight seam with "sheet-form" (i.e., conventional reverse tanking) waterproofing membranes on the formwork or other substrate surface.
- sheet-form i.e., conventional reverse tanking
- an exemplary supporting structure 30 has a corresponding dome shape 31 also is entirely or partially surrounded by a flat collar portion 33 useful for fastening the structure 30 onto a formwork or other mounting surface.
- the support structure 30 may be thermoformed or stamped from a thermoplastic sheet material, such as ABS high impact polystyrene, poly(vinyl) chloride, polypropylene polyethylene, and others.
- the support structure may also be made from sheet metal such as steel, (e.g., stainless) aluminum, copper, tin, or other metals. Many of these metals can be thermoformed or stamped into shape relatively conveniently.
- the average thickness of the support structure 30 is about 10-200 mils and more preferably 20-100 mils. While various thermoplastics may be used, such as polyvinyl chloride (PVC), some materials such as high density polyethylene, while thermoformable, may require extra thickness in order to withstand the force of post cast concrete, and this extra thickness may present manufacturing difficulties during thermoforming because the added thickness will require higher melting temperatures or longer dwell time (in a heated mold) to soften the plastic, and this could lead to excessive heating and scorching of the material. Thus, preferred thickness will often depend upon the choice of material.
- PVC polyvinyl chloride
- some materials such as high density polyethylene
- thermoformable may require extra thickness in order to withstand the force of post cast concrete, and this extra thickness may present manufacturing difficulties during thermoforming because the added thickness will require higher melting temperatures or
- thermoplastic material used for the support structure 30 should ideally withstand nails, staples, or other fasteners being driven through the flat collar portion to secure the structure to formwork. This does not rule out using brittle materials which shatter, however, because such materials can also be attached using alternative means (e.g., adhesives, drilled holes, etc.).
- brittle materials which shatter, however, because such materials can also be attached using alternative means (e.g., adhesives, drilled holes, etc.).
- dome or hemispherical shapes other thermoformed or stamped three-dimensional shapes such as cylinders, boxes, pyramids, etc., can be employed, but dome shapes are preferred because they are least vulnerable to distortion or twisting caused by the wet concrete or mortar cast against the membrane-covered 10 supporting structure 30.
- a rounded shape provides better flow of the concrete around the support structure (30), thus better enabling the consolidation of the concrete, and improving or ensuring bonding between the concrete and support structure (30). It is preferable to have fewer sharp edges or creases which may lead to weaknesses in the surrounding concrete.
- the support structure 30 may be filled with material, such as a polyurethane foam or mortar cement, to resist collapsing under the weight of concrete, it is believed that the thickness of the support material and the material chosen (e.g., synthetic polymer, metal, or combination thereof) may be such as to allow the support structure 30 by itself, without filling its cavity, to support the weight of post cast concrete.
- dome structures 30 particularly at the bottom of the formwork where pressures may be greatest, but this can be conveniently accomplished such as by drilling a small hole in an installed dome, filling the dome through the hole with material (e.g., polyurethane foam which becomes rigid), and then sealing the hole with two-sided PREPRUFE® tape.
- material e.g., polyurethane foam which becomes rigid
- the supporting structure 30 is molded using the same mold as used for providing the three-dimensional contour in the shaped waterproofing membrane 10 (to be further described below).
- the supportive dome structure 30 which similarly has a three- dimensional contour portion 32 surrounded entirely or partially by a flat collar portion 34, serves not only to support the shaped waterproofing membrane 10 when it is installed over a tieback 40 or other surface detail, but also serves for protecting the similarly shaped membrane 10 during shipment.
- the supportive dome structure 30 can be placed into a box situated on the outer first face of the membrane 10 to protect the adhesive side of the membrane (i.e., the rigid dome is placed over the soft dome), and thus the shaped membrane 10 is "tucked under the hat,” so to speak.
- the order is reversed, with the supportive dome structure 30 being fitted over the tieback and fastened onto the formwork 40 or other substrate surface by nails or other fasteners driven through the flat collar portion 34 and into the underlying formwork, and then this is followed by fitting the shaped waterproofing membrane 10 over the dome support 30.
- the membrane 10 can be attached it to the supporting dome structure 30 and/ or surrounding formwork or adjacent conventional membranes by any means known, such as by using a conventional mastic or other adhesive. It is envisioned that shaped membranes 10 with domes 30 of corresponding size can be packaged together as sets, much in the manner of stacking identically shaped hats or bowls.
- a plurality of shaped waterproofing membranes 10 are fitted with correspondingly shaped support structures 30 within the same packaging (e.g., shipping) carton or box, similar to the way in which dispensable paper drinking cups are sold stacked together in packaging.
- each shaped membrane 10 is fitted into its corresponding support structure 30, and this "set" can be fitted within another "set” and thus easily removed from the packaging carton, one set at a time, as the need dictates.
- the ability to stack the "shaped" membranes allows them to be conveniently shipped or transported alongside the "sheet-form" membranes with which they will be used for typical reverse tanking applications.
- a shipment of both "shaped" and “sheet- form” (conventional) membranes can be bundled together (such as by using plastic wrapping, binding materials, etc) for transport the cartons together conveniently to the construction site.
- rigid domes can be used as the waterproofing membranes themselves, such as by first stamping or thermoforming a rigid sheet into the desired three-dimensional shape (e.g., dome or pyramid surrounded by one or more collar portions or flanges), and subsequently this structure is coated or layered with a coating for bonding to fresh concrete.
- the coating may comprise rubberized asphalt, a synthetic polymer adhesive (e.g., SIS, SEBS, acrylic, polyurethane, etc.), a clay based adhesive (e.g., bentonite, smectite), or mixture thereof.
- the outer edges 15 of the shaped waterproofing membrane 10 are preferably straight so that the membrane can be conveniently overlapped with those of a conventional reverse tanking waterproofing membrane. Furthermore, the shaped membrane 10 (Fig. 3) and conventional membranes installed onto the formwork (See e.g., Fig. 1 PRIOR ART) can be seamed together by using two-sided reverse tanking tape (e.g., Grace PREPRUFE tape) to provide a continuous barrier between and around the area surrounding the tieback 40.
- two-sided reverse tanking tape e.g., Grace PREPRUFE tape
- a membrane that combines the properties of both the shaped membrane 10 and support structure 30, such as by coating the waterproofing adhesive layer 14 directly onto a rigid three-dimensional contour surrounded entirely or partially by a flat collar portion, followed by optionally coating a protective coating layer onto the adhesive layer.
- This method is less desirable than thermoforming a single laminate because it would be more time- consuming to make (at the plant) or assemble (at the construction site).
- thermoformed dome support 30 in place over the tieback (e.g., by mailing the flat collar portion into the formwork); and then to cover the support dome with a correspondingly "shaped” waterproofing membrane 10 that is easily sealed with “sheet-form” (conventional) reverse tanking membranes: using just four strips of tape.
- sheet-form conventional reverse tanking membranes
- an exemplary method of the invention comprises: providing at least one "sheet-form” waterproofing membrane comprising a carrier support sheet with first and second opposed major faces, and, disposed over a first major face thereof, a pressure-sensitive adhesive layer operative to bond with post cast concrete; and providing at least one "shaped” waterproofing membrane (e.g., Fig.
- both the sheet-form and shaped waterproofing membranes further comprise a protective coating layer 16, such as an elastomeric polymeric coating and/ or a particle layer. More preferably, the carrier ⁇ " support sheet 12, adhesive layer 14, and protective layer 16 of the shaped membrane 10 are thermoformed together as a single piece laminate.
- a support structure 30, preferably molded from the same mold used for thermoforming the shaped waterproofing membrane 10, is first installed onto a formwork or other mounting surface, so that the shaped membrane can be positioned over the installed support structure 30.
- Fig. 4 illustrates another exemplary shaped waterproofing membrane 50 of the invention which is installed around a penetration 60 (e.g., pipe) in the building or civil construction surface 62.
- the three- dimensional contour 51 is cylindrically shaped and surrounded by a flat collar portion 53 molded from the same sheet material.
- the outer surface of the cylinder 51 and upper face of the flat collar portion 53 are covered by a waterproofing pressure sensitive adhesive and optional protective coating (similar to the layers illustrated in magnified view in Fig. 3).
- the flat collar portion 53 has preferably straight edges (as designated at 55) to provide quick seaming, using conventional two-sided reverse tanking tape (e.g., PREPRUFE® brand), with "sheet-form" (conventional) reverse tanking membranes (not shown) that may be installed on the substrate surface 62.
- the cylinder form 51 can be replaced by a cone shape. The top of the cone can be cut at the desired cone height to achieve an opening diameter corresponding to the diameter or size of the object (pipe 60, pile cap, etc.) to be waterproofed.
- the use of the three- dimensional cylinder shape 51 (Fig. 4) or cone shape will also save considerable labor at the construction site, because the waterproofing membrane 50 would require.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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AU2005227232A AU2005227232B2 (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse tanking membranes |
CA2558175A CA2558175C (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse tanking membranes |
JP2007501925A JP4790698B2 (en) | 2004-03-03 | 2005-03-02 | 3D reverse tanking membrane |
PL05724279T PL1720697T3 (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse tanking membranes |
EP05724279.4A EP1720697B1 (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse tanking membranes |
BRPI0508312A BRPI0508312B1 (en) | 2004-03-03 | 2005-03-02 | preform molded waterproofing membranes, building waterproofing assembly, method for manufacturing the preform molded waterproofing membrane, method for waterproofing a building surface and waterproofed construction or building structure ” |
CN200580013867XA CN1960856B (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse waterproof membranes |
HK07110250.7A HK1104987A1 (en) | 2004-03-03 | 2007-09-20 | Three-dimensional reverse tanking membranes |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US54970204P | 2004-03-03 | 2004-03-03 | |
US60/549,702 | 2004-03-03 | ||
US10/921,737 US7968171B2 (en) | 2004-03-03 | 2004-08-19 | Three-dimensional reverse tanking membranes |
US10/921,737 | 2004-08-19 |
Publications (2)
Publication Number | Publication Date |
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WO2005091931A2 true WO2005091931A2 (en) | 2005-10-06 |
WO2005091931A3 WO2005091931A3 (en) | 2006-11-02 |
Family
ID=34915644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/006704 WO2005091931A2 (en) | 2004-03-03 | 2005-03-02 | Three-dimensional reverse tanking membranes |
Country Status (12)
Country | Link |
---|---|
US (2) | US7968171B2 (en) |
EP (1) | EP1720697B1 (en) |
JP (1) | JP4790698B2 (en) |
KR (1) | KR20060130234A (en) |
CN (1) | CN1960856B (en) |
AU (1) | AU2005227232B2 (en) |
BR (1) | BRPI0508312B1 (en) |
CA (1) | CA2558175C (en) |
HK (1) | HK1104987A1 (en) |
PL (1) | PL1720697T3 (en) |
TW (1) | TWI357456B (en) |
WO (1) | WO2005091931A2 (en) |
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US8453405B2 (en) | 2010-02-08 | 2013-06-04 | W. R. Grace & Co.-Conn. | Waterproofing membrane |
US10655322B2 (en) | 2015-09-29 | 2020-05-19 | Gcp Applied Technologies Inc. | Facilitated detailing for pre-applied waterproofing membranes |
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US9394464B2 (en) | 2010-04-28 | 2016-07-19 | Gcp Applied Technologies Inc. | Waterproofing membrane |
WO2011139466A1 (en) * | 2010-04-28 | 2011-11-10 | W.R. Grace & Co.-Conn. | Waterproofing membrane |
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US9297135B2 (en) | 2014-05-09 | 2016-03-29 | Fast Ditch, Inc. | Structural lining system |
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US10781835B2 (en) | 2015-03-31 | 2020-09-22 | Tremco Incorporated | Mechanically detachable membrane for pre-applied waterproofing |
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- 2005-03-02 CN CN200580013867XA patent/CN1960856B/en active Active
- 2005-03-02 CA CA2558175A patent/CA2558175C/en active Active
- 2005-03-02 PL PL05724279T patent/PL1720697T3/en unknown
- 2005-03-02 WO PCT/US2005/006704 patent/WO2005091931A2/en active Application Filing
- 2005-03-02 AU AU2005227232A patent/AU2005227232B2/en not_active Ceased
- 2005-03-02 KR KR1020067020329A patent/KR20060130234A/en not_active Application Discontinuation
- 2005-03-02 EP EP05724279.4A patent/EP1720697B1/en not_active Not-in-force
- 2005-03-02 TW TW094106271A patent/TWI357456B/en active
- 2005-03-02 JP JP2007501925A patent/JP4790698B2/en not_active Expired - Fee Related
-
2007
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2011
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8453405B2 (en) | 2010-02-08 | 2013-06-04 | W. R. Grace & Co.-Conn. | Waterproofing membrane |
US8713879B2 (en) | 2010-02-08 | 2014-05-06 | W. R. Grace & Co.-Conn. | Waterproofing membrane |
US10655322B2 (en) | 2015-09-29 | 2020-05-19 | Gcp Applied Technologies Inc. | Facilitated detailing for pre-applied waterproofing membranes |
Also Published As
Publication number | Publication date |
---|---|
HK1104987A1 (en) | 2008-02-01 |
KR20060130234A (en) | 2006-12-18 |
CN1960856A (en) | 2007-05-09 |
US7968171B2 (en) | 2011-06-28 |
CN1960856B (en) | 2012-02-15 |
US8475909B2 (en) | 2013-07-02 |
PL1720697T3 (en) | 2013-12-31 |
TW200532081A (en) | 2005-10-01 |
US20110214797A1 (en) | 2011-09-08 |
EP1720697A2 (en) | 2006-11-15 |
CA2558175C (en) | 2012-06-05 |
AU2005227232B2 (en) | 2009-07-16 |
TWI357456B (en) | 2012-02-01 |
US20050196590A1 (en) | 2005-09-08 |
CA2558175A1 (en) | 2005-10-06 |
BRPI0508312A (en) | 2007-07-24 |
EP1720697B1 (en) | 2013-08-28 |
JP2007529652A (en) | 2007-10-25 |
EP1720697A4 (en) | 2010-09-08 |
JP4790698B2 (en) | 2011-10-12 |
AU2005227232A1 (en) | 2005-10-06 |
BRPI0508312B1 (en) | 2015-11-24 |
WO2005091931A3 (en) | 2006-11-02 |
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