Effect of α: Phase Nano Al₂O₃ and Rice Husk Ash in Cement Mortar

Table 3

Water absorption rate.

Absorption phase	Time (h)	At∗ (g/100 cm^2)
		Control	MHRA-2	NA-2	MN
First phase	0	0	0	0	0
	.25	23.45	21.36	21.02	19.02
	.50	32.05	31.61	29.62	27.12
	1	41.72	42.96	40.24	36.27
	2	59.61	58.42	53.21	42.13
	4	78.24	72.63	68.36	56.28
	6	86.51	82.16	79.41	63.29
	24	163.73	157.23	145.31	121.72
Second phase	48	169.23	161.20	152.60	133.63
	72	171.32	164.72	152.73	134.24
	96	172.16	164.98	152.96	134.48
	120	172.53	265.06	153.02	134.69
	144	172.96	165.71	153.08	134.84

A_t∗: water uptake.