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Significance and Use
3.1 The success of a waterproofing application depends on, among other things, the type, smoothness, and cleanliness of the concrete surface being coated. This guide describes conditioning or repairing of the concrete surface by the removal or other constructive modification of those surface defects that can affect the performance of the waterproofing system. It covers surface preparation by mechanical, chemical, and blast cleaning methods in order to provide good adhesion between the waterproofing system and the concrete as well as the effect and control of various surface contaminants. It also addresses the evaluation of concrete moisture content to ensure optimal initial bond. (See also ACI 515.)
3.2 This guide is not intended to offer guidelines for the selection of a suitable waterproofing system; the use of specific application techniques; or the design and installation of flashing, terminations, expansion joint details, etc. (For definitions of terms, see Terminology .)
3.3 This guide is not intended to offer guidelines for the control of water vapor drive through the concrete which could affect long term performance of the bond between the concrete and waterproofing.
3.4 The recommended procedures described herein are minimums; the waterproofing materials manufacturer may require more strict or specific procedures for the preparation of concrete surfaces for the application of the manufacturer's specific system.
1.1 This guide provides recommendations for the preparation of concrete surfaces prior to the application of adhered (bonded) waterproofing.
1.2 This guide is directed primarily toward installations of new concrete, but is also applicable for existing concrete installations. (See also ACI 116 and ACI 546.)
1.3 This guide does not apply to loose laid systems, bentonite systems, lead, or the like.
1.4 This guide does not apply to applications involving insulating concrete.
1.5 This guide does not apply to applications involving lightweight structural concrete.
Note 1: Once installed, it is difficult to visually identify the difference between normal weight and lightweight concrete. It is recommended that a review of contract documents, concrete batch or delivery tickets or similar effort be performed to identify the concrete type.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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 appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1079 Terminology Relating to Roofing and Waterproofing
D4258 Practice for Surface Cleaning Concrete for Coating
D4262 Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
D4263 Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method
F2659 Guide for Preliminary Evaluation of Comparative Moisture Condition of Concrete, Gypsum Cement and Other Floor Slabs and Screeds Using a Non-Destructive Electronic Moisture Meter
ICS Number Code 91.080.40 (Concrete structures)
UNSPSC Code 30151505(Roofing membranes); 30111500(Concrete and mortars)
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ASTM D5295 / D5295M-18, Standard Guide for Preparation of Concrete Surfaces for Adhered (Bonded) Membrane Waterproofing Systems, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top