NZS 3113:1979 PDF Download

The NZS 3113:1979 standard outlines the requirements for various types of chemical admixtures used in concrete. The standard covers the identification, physical requirements, and methods of sampling and testing for these chemical admixtures.

The standard includes six types of chemical admixtures for concrete: Type WR, which is water reducing; Type RE, which is set retarding; Type AC, which is set accelerating; Type WRE, which is water reducing and set retarding; Type WRC, which is water reducing and set accelerating; and Type AEA, which is air entraining.

This standard ensures that the chemical admixtures used in concrete meet specific quality and performance standards. It provides guidelines for identification, physical characteristics, and testing procedures to ensure the effectiveness and compatibility of these admixtures with concrete.