Findings in a Ready Mixed Concrete Research & Education Foundation report support reexamination of the 90-minute delivery threshold in ASTM C94, Standard Specification for Ready Mixed Concrete. The just-released “Impact of Extended Time to Discharge on Concrete Durability and Performance” covers a New Jersey Institute of Technology (NJIT) investigation of concrete specimen freeze-thaw performance and resistivity.
Read MoreTag: ASTM C94
Report questions 90-minute discharge window in ASTM C94
Sources: Ready Mixed Concrete Research & Education Foundation, Alexandria, Va.; CP staff
Findings in a new RMC Research & Education Foundation report, “Impact of Extended Time to Discharge on Concrete Durability and Performance,” support reexamination of the 90-minute delivery threshold in ASTM C94, Standard Specification for Ready Mixed Concrete.
Read MoreTxDOT on board with GCP Verifi system for ASTM C94-grade loads
Sources: GCP Applied Technologies, Cambridge, Mass.; CP staff
A new Texas Department of Transportation Special Provision Specification notes that mixer trucks deploying sensor-enabled slump adjustment equipment like GCP Applied Technologies’ Verifi automated water and chemical admixture dosing system meet ASTM C94, Standard Specification for Ready-Mixed Concrete requirements.
Read More