Design of Normal Concrete Mixtures Using Workability-Dispersion-Cohesion Method

Table 4

The results of 220 mixes obtained during the 24 years of study.

Variable	The final mean value (%)	95% significant interval	Coefficient of variation (%)	Notes
c/w ratio	98	90–103	6	Slightly lower than estimated
Water content	104	92–111	11	Slightly higher than estimated
Cement content	103	95–108	7	Interdependent on the previous two variables
CA content	104	94–113	10	Slightly higher than estimated
FA content	95	88–103	8	Slightly higher than estimated

a: the value is assumed 100%.
b: the value after mix adjustment for practical use.
c: w/c ratio is higher.