JIS A 1118:2017 PDF Download

The JIS A 1118:2017 standard specifies the procedure to determine the air content in fresh concrete using the volumetric method. It is specifically applicable to concrete that contains coarse aggregates with a maximum size of 40 mm or smaller.

If the concrete contains coarse aggregates with a maximum size exceeding 40 mm, it is recommended to screen the aggregates using the wet screening method to reduce their size to 40 mm or less. This ensures accurate measurement and calculation of the air content.

Additionally, this standard can also be used for concrete that utilizes porous aggregates, such as artificial lightweight aggregate concrete. This allows for the determination of air content in a variety of concrete compositions.

An annex in the standard provides a comparison table between the previous and current editions, highlighting any significant technical revisions that have been made. This information can be useful for users of the standard who need to understand the changes and updates made in the latest edition.