Answer :
Final answer:
The correct ASTM standard for water used in concrete mixing is ASTM C1602. This standard ensures the water quality for concrete production meets specific criteria to maintain the concrete's integrity. Thus Option b is Correct.
Explanation:
Water for concrete mixing must conform to the ASTM C1602 standard, which is titled 'Standard Specification for Mixing Water Used in the Production of Hydraulic Cement Concrete.'
This standard provides guidelines and requirements for the quality and properties of water used in concrete mixing to ensure the concrete's performance is not compromised. Options a, b, and c are incorrect as they refer to other specifications that are not related to water for concrete mixing. Option d does not exist as per the provided options and could be a typographical error.