The Albedo of Pervious Cement Concrete Linearly Decreases with Porosity

Table 1

Mix proportion.

Number	Sand ratio	w/c ratio	Mix (kg/m³)					Target; porosity	Density; (kg/m^3)
			Cement	Aggregate	Sand	WRA	Water
1	0.10	0.28	243.03	1518.92	151.89	2.43	124.20	0.35	1701
2	0.20	0.28	245.89	1536.79	307.36	2.46	125.66	0.30	1737
3	0.30	0.28	248.81	1555.07	466.52	2.49	127.16	0.25	1812
4	0.40	0.28	251.81	1573.80	629.52	2.52	128.69	0.20	1928

The density was tested after the samples were fully cured.