Utilization of Six Sigma in Quality Improvement of Recycled Aggregates Concrete

Table 11

Response optimization.

Parameters
	Goal	Lower	Target	Upper	Weight	Import
Fc.avg	Maximum	32.000	35.100	35.1	1	1
Fc.stdv	Minimum	1.921	1.921	2.5	1	1
Global solution
% Coarse = 26.0101
% Fine = 30.5556
w/c ratio = 0.5
Predicted responses
Fc.avg = 34.1753, desirability = 0.701712
Fc.stdv = 2.0957, desirability = 0.698315
Composite desirability = 0.700012