Test number	Design strength level	Cementitious material (kg/m³)	Fine aggregate (kg/m³)		Machine-made sand substitution rate (%)	Coarse aggregate (kg/m³)	Water (kg/m³)	Water reducing agent dosage (%)
Test number	Design strength level	Cementitious material (kg/m³)	Natural sand	Machine-made sand	Machine-made sand substitution rate (%)	Coarse aggregate (kg/m³)	Water (kg/m³)	Water reducing agent dosage (%)
06	C30	335	755	0	0	1120	160	1.95
07	C20	275	397.5	397.5	50	1120	170	1.85
08	C25	305	387.5	387.5	50	1120	165	1.90
09	C30	335	377.5	377.5	50	1120	160	1.95
10	C35	365	367.5	367.5	50	1120	155	2.1
11	C40	395	357.5	357.5	50	1120	150	2.4
12	C45	430	342.5	342.5	50	1120	150	2.5
13	C50	470	325	325	50	1120	150	2.7