JIS A 1116:2019 PDF Download

The JIS A 1116:2019 standard provides guidance on the method of testing for unit mass and air content of fresh concrete using the mass method. It specifically applies to concrete that is made with coarse aggregate that has a maximum size of 40 mm or smaller. It also covers concrete made with porous aggregate, such as artificial lightweight aggregate.

The purpose of this standard is to ensure accurate measurement of the unit mass and air content of fresh concrete. These parameters are important for determining the quality and performance of the concrete. The mass method is used to determine the unit mass by weighing a known volume of freshly mixed concrete, and to determine the air content by measuring the volume of air trapped in the concrete.

It should be noted that the standard provides a reference to the corresponding international standard, ISO 1920-2:2016, which covers the testing of concrete properties, specifically the properties of fresh concrete. This suggests that the JIS A 1116:2019 standard aligns with the international standard in terms of its testing methods and procedures.