ASTM D8425-22
(Guide)Standard Guide for the Use of Sodium Bentonite Needle-Punched Geotextile Waterproofing Systems with Cast-in-Place Concrete Below-Grade Foundation Construction
Standard Guide for the Use of Sodium Bentonite Needle-Punched Geotextile Waterproofing Systems with Cast-in-Place Concrete Below-Grade Foundation Construction
SIGNIFICANCE AND USE
5.1 This guide outlines general installation procedures and precautions for the application of sodium bentonite needle-punched geotextile waterproofing systems.
5.2 This guide is not all inclusive and is intended only to supplement detailed drawings and specifications from designers and the installation guidelines of manufacturers. Manufacturers of some of the systems addressed by this guide require proprietary products and special procedures not described in this guide. Manufacturers’ guidelines and details applicable for each site construction condition encountered on a project should therefore be considered in the application of this guide.
SCOPE
1.1 This guide covers general installation guidelines of waterproofing membranes produced as a composite of sodium bentonite contained within two interlocked needle-punched geotextiles for designers to consider when developing project-specific drawings and specifications. This guide covers construction applications where the waterproofing is applied to the positive side of below-grade cast-in-place concrete foundation walls, both backfilled and support of excavation (SOE) construction, and under concrete pressure slabs. This guide does not cover plaza deck construction applications, either split-slab construction or pavers on pedestals, or vegetated green roof 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 profile as recommended in Guide D5295/D5295M, consolidated in accordance with applicable guidelines in ACI 309, 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 pneumatically applied concrete (that is, shotcrete).
1.5 The values stated in SI units are to be regarded as 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 guide does not purport to assign responsibilities of quality assurance or quality control. Specific quality assurance and quality control items should be addressed in project specifications and contract documents.
1.8 This guide does not purport to include requirements for warranties associated with the waterproofing materials or installation.
1.9 This guide does not purport to include all detailing techniques to address various conditions that can be encountered on construction projects.
1.10 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 appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D8425 −22
Standard Guide for the
Use of Sodium Bentonite Needle-Punched Geotextile
Waterproofing Systems with Cast-in-Place Concrete Below-
1
Grade Foundation Construction
This standard is issued under the fixed designation D8425; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 Different sodium bentonite geotextile membranes have
different materials of composition and construction which can
1.1 This guide covers general installation guidelines of
affect physical properties. The procedures contained in this
waterproofing membranes produced as a composite of sodium
guide, therefore, may not be universally applicable to all
bentonite contained within two interlocked needle-punched
sodium bentonite geotextile membranes under all field condi-
geotextiles for designers to consider when developing project-
tions.
specific drawings and specifications. This guide covers con-
struction applications where the waterproofing is applied to the 1.7 This guide does not purport to assign responsibilities of
positive side of below-grade cast-in-place concrete foundation quality assurance or quality control. Specific quality assurance
walls, both backfilled and support of excavation (SOE) and quality control items should be addressed in project
construction, and under concrete pressure slabs. This guide specifications and contract documents.
does not cover plaza deck construction applications, either
1.8 This guide does not purport to include requirements for
split-slab construction or pavers on pedestals, or vegetated
warranties associated with the waterproofing materials or
green roof waterproofing applications.
installation.
1.2 This guide does not cover sodium bentonite waterproof-
1.9 This guide does not purport to include all detailing
ing membranes produced with a corrugation paper carrier,
techniques to address various conditions that can be encoun-
bentonite bonded to a geomembrane, and spray-applied ben-
tered on construction projects.
tonite systems.
1.10 This standard does not purport to address all of the
1.3 For the purpose of this guide, concrete is assumed to be
safety concerns, if any, associated with its use. It is the
cast-in-place with a surface profile as recommended in Guide
responsibility of the user of this standard to establish appro-
D5295/D5295M, consolidated in accordance with applicable
priate safety, health, and environmental practices and deter-
guidelines in ACI 309, structurally sound, able to accept the
mine the applicability of regulatory limitations prior to use.
weight of anticipated loads, and meets the local building code
1.11 This international standard was developed in accor-
requirements. All components of the waterproofing system are
dance with internationally recognized principles on standard-
assumed to comply with any federal, state, and local environ-
ization established in the Decision on Principles for the
mental regulations that may be in effect at the time of
Development of International Standards, Guides and Recom-
installation. Expansion joints, insulation, and drainage layers
mendations issued by the World Trade Organization Technical
are beyond the scope of this guide.
Barriers to Trade (TBT) Committee.
1.4 This guide does not cover sodium bentonite geotextile
2. Referenced Documents
membranes installed on below-grade foundation walls and
2
slabs constructed with masonry materials, precast concrete, or
2.1 ASTM Standards:
pneumatically applied concrete (that is, shotcrete).
D1079 Terminology Relating to Roofing and Waterproofing
D4439 Terminology for Geosynthetics
1.5 The values stated in SI units are to be regarded as
D5295/D5295M Guide for Preparation of Concrete Surfaces
standard.The unit values given in parentheses are for reference
for Adhered (Bonded) Membrane Waterproofing Systems
information only.
D6294/D6294M Test Method for Corrosion Resistance of
1
This guide is under the jurisdiction of ASTM Committee D08 on Roofing and
2
Waterproofing and is the direct responsibility of Subcommittee D08.22 on Water- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
proofing and Dampproofing Systems. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved Aug. 1, 2022. Published August 2022. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8425-22. the ASTM website.
Copyright © ASTM International, 10
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