Meaning and use

3.1 Chemical cleaning and etching are used to prepare coated concrete.

3.2 Residual chemicals that are not removed by water flushing may adversely affect the properties and adhesion of coatings applied to concrete surfaces. The purpose of this test method is to determine that residual chemicals have been removed by measuring the acidity or alkalinity of the final rinsed surface.

ASTM D4262-18 Standard Test Method for Surface pH of Chemically Cleaned or Etched Concrete

Step 1: Scope

1.1 This test method includes procedures for determining the acidity or alkalinity of concrete surfaces prepared by chemical cleaning or etching prior to coating.

1.2 This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.

1.3 This international standard is based on internationally recognized standardization principles established in the “Decision on Principles for the Development of International Standards, Guidelines and Recommendations” issued by the WTO Committee on Technical Barriers to Trade (TBT) Committee.