ASTM International's concrete and concrete aggregates committee (C09) has proposed a standard to outline the evaluation of alkali-aggregate reactions in concrete, which cause expansion and cracking. The proposed standard (WK91683) will provide specific language to assess the risk of these reactions through uniform criteria across agencies.

According to ASTM member Anthony Bentivegna, the proposed standard will offer test methods for evaluating alkali-aggregate reactions and procedures to mitigate potential effects.

"The broader purpose is to improve the durability and reliability of concrete infrastructure. That includes bridges, pavements, buildings, water infrastructure, energy facilities, marine structures and more," said Bentivegna, subcommittee chair, Durability Engineers. "This proposed standard is intended to provide a uniform, ASTM-based specification that can be adopted, referenced and modified as needed by the concrete industry."

All interested parties are invited to participate in the development of WK91683.

"This standard is most effective when it reflects the practical needs of the entire concrete industry," said Bentivegna. "Participation from aggregate producers, concrete producers, cement and supplementary cementitious material suppliers, admixture manufacturers, testing laboratories, owners, engineers, contractors, researchers and public agencies would all be valuable."

ASTM welcomes participation in the development of its standards.

For more information, visit astm.org.