Performance of Ecological Pervious Concrete Prepared with Sandstone/Limestone-Mixed Aggregates

Table 7

Water retention of the ecological pervious concrete.

Test blocks	After drying/kg	After immersion in water/kg	Soak dry/kg	Water absorption per unit mass
0% sandstone aggregate	1.6517	1.6710	0.0193	0.0117
25% sandstone aggregate	1.6035	1.6316	0.0281	0.0175
50% sandstone aggregate	1.3641	1.4243	0.0602	0.0441
75% sandstone aggregate	1.3362	1.3962	0.0600	0.0449
100% sandstone aggregate	1.3085	1.3676	0.0591	0.0452