This standard lays down the requirements for the production, transport, and supply of ready-mixed concrete (RMC). It outlines batching tolerances, delivery conditions, and quality control procedures to ensure the concrete meets structural design specifications.
Specifies requirements for ready-mixed concrete, including production, delivery, and quality control.
Quick Reference Values
Maximum delivery and discharge time2 hours
Tolerance for batching cementitious materials± 2 percent
Tolerance for batching aggregates± 3 percent
Tolerance for batching water and admixtures± 3 percent
Minimum transit mixer agitating speed2 to 6 rev/min
Practical Notes
Ensure the transit mixer rotates at the correct agitating speed during transport to prevent segregation.
Strictly prohibit the addition of extra water at the site unless officially authorized by the quality control engineer.
Always verify the delivery ticket for mix design details, time of batching, and slump requirements before unloading.