The Effect of Variation of Molarity of Alkali Activator and Fine Aggregate Content on the Compressive Strength of the Fly Ash: Palm Oil Fuel Ash Based Geopolymer Mortar

Table 2

Particle size distribution of N-sand, M-sand, and QD.

Sieve size	Percentage of passing
	N-sand	M-sand	QD
5 mm	99.99	100.00	99.98
2.36 mm	81.63	70.91	73.66
1.18 mm	60.60	52.09	52.52
600 μm	33.18	30.34	29.41
300 μm	12.16	13.12	11.01
Fineness modulus	2.88	2.66	2.67
𝐷10, mm	0.27	0.30	0.31
𝐷30, mm	0.50	0.55	1.41
𝐷60, mm	1.24	1.42	0.57
𝐶𝑢 = 𝐷60/𝐷10	4.53	4.80	4.56
𝐶𝑐 = 𝐷^230/(𝐷10×𝐷60)	0.74	0.73	0.74

𝐶_𝑢: uniformity coefficient; 𝐶_𝑐: coefficient of curvature.