Other tools NBS offers a range of tools for specification and collaboration National BIM Library The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard Uniclass 2015 A dynamic and unified classification system for the construction industry covering all sectors Construction Information Service (CIS) A comprehensive online collection of construction related standards, regulations, technical advice and articles Plug-ins NBS provides a range of tools to help connect your CAD model to your specification model
Platform Resources Support Events About TheNBS.com Manufacturers Uniclass 2015 Get in touch

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

ASTM Standard C231/C231M-24 Standard test method for air content of freshly mixed concrete by the pressure method

Publication Year

2024

Document Status

Current

Abstract

Test method covering the determination of the air content of freshly mixed concrete exclusive of any air that may exist inside voids within aggregate particles.

Document History

Supersedes ASTM C231/C231M-22.

Publisher Information

American Society for Testing and Materials

ASTM International offers global access to standards development for over 140 participating countries.

100 Barr Harbour Drive
PO Box C700
West Conshohocken
ASTM
USA

Website: https://www.astm.org/
Email: service@astm.org
Tel: +1 610 832-9500