The mix design of the CTB is based on many factors and designed by an engineer. The P-304 is an FAA specification that provides several design criteria (including the minimum 7-day compressive strength -- which is affected by cement, aggregate, and water ratios). The Soil-Cement Laboratory Handbook, published by the Portland Cement Association, can be used as a design guide/reference.
What is the ratio of cement , aggregates and water for mixing ?
The mix design of the CTB is based on many factors and designed by an engineer. The P-304 is an FAA specification that provides several design criteria (including the minimum 7-day compressive strength -- which is affected by cement, aggregate, and water ratios). The Soil-Cement Laboratory Handbook, published by the Portland Cement Association, can be used as a design guide/reference.