KCRC’s range of standard concretes are designed for residential applications, low-rise buildings, paving, driveways and other less demanding applications where the method of placement is via conventional means such as chute, pump or kibble. The quality and quantity required vary according to the project.
The “ASTM C 94 – Standard Specification for Ready Mixed Concrete” defines the quality formats:
Performance — wherein the client specifies the aggregate size, slump, air content, and strength. In this case, KCRC is responsible for the design of the mixture.
Prescription — wherein the client specifies the aggregate size, slump, air content, cement content or weight of cement per unit volume of concrete. Here, the purchaser / client accepts responsibility for concrete strength and performance.