ASTM-D4787 2024(Redline)

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D4787-24 Standard Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates (Redline)

Published By	Publication Date	Number of Pages
ASTM	2024	11

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Categories: 91.100.30 - Concrete and concrete products, ASTM

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Description

ASTM D4787-24

Redline Standard: Standard Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates

ASTM D4787

Scope

1.1 This practice covers procedures that may be used for the detection of discontinuities in nonconductive linings or other non-conductive coatings applied to concrete substrates with or without a conductive underlayment.

1.2 Discontinuities may include pinholes, internal voids, holidays, cracks, and conductive inclusions.

1.3 This practice describes detection of discontinuities utilizing a high voltage spark tester using either pulsed or continuous dc voltage.

Note 1: For further information on discontinuity testing refer to NACE Standard Practice SP0188, Test Method G62, or Practice D5162.

1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.5 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. For a specific hazard statement, see Section 7.

1.6 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.

Keywords

conductive underlayment; discontinuities; high voltage spark testers; holiday; nonconductive;

ICS Code

ICS Number Code 91.100.30 (Concrete and concrete products)

DOI: 10.1520/D4787-24

Additional information

Standard Title	D4787-24 Standard Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates (Redline)
Published Code	ASTM
Publication Date	2024
Pages Count	11
ICS Codes	91.100.30 - Concrete and concrete products