1.1 This guide covers the installation for waterproofing membranes produced as a composite of sodium bentonite contained within interlocked geotextiles applied to the positive-side of below-grade cast-in-place concrete foundation walls, soil retention shoring wall construction, earth-covered structures, and under concrete pressure slabs. This guide does not cover plaza deck construction applications, either split-slab construction or pavers on pedestals, or vegetated greenroof waterproofing applications. 1.2 This guide does not cover sodium bentonite waterproofing membranes produced with a corrugation paper carrier, bentonite bonded to a geomembrane, and spray-applied bentonite systems. 1.3 For the purpose of this guide, concrete is assumed to be cast-in-place with a surface meeting D5295, structurally sound, able to accept the weight of anticipated loads, and meets the local building code requirements. All components of the waterproofing system are assumed to comply with any federal, state, and local environmental regulations that may be in effect at the time of installation. Expansion joints, insulation, and drainage layers are beyond the scope of this guide. 1.4 This guide does not cover sodium bentonite geotextile membranes installed on below-grade foundation walls and slabs constructed with masonry materials, precast concrete, or shotcrete. 1.5 The values stated in SI units are to be regarded as the standard. The unit values given in parentheses are for reference information only. 1.6 Different sodium bentonite geotextile membranes have different materials of composition and construction which can affect physical properties. The procedures contained in this guide, therefore, may not be universally applicable to all sodium bentonite geotextile membranes under all field conditions. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory requirements prior to use.
KeywordsWaterproofing, Sodium Bentonite, Geotextile,
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