Influence of Humic Acid on the Strength of Cement-Soil and Analysis of Its Microscopic Mechanism

Table 3

Pore size distribution of cement-soil with different HA content λ.

Sample	Average pore size (d/nm)	Pore volume in different pore size ranges/(cm^3·g^−1)
		Large pores, d > 10000 nm	Mesopores, 100 nm < d < 10000 nm	Small pores, 10 nm < d < 100 nm	Micropores, d < 10 nm
λ = 0%	23.9	0.49	0.41	0.98	0.39
λ = 10%	23.3	0.92	0.73	1.81	0.45
λ = 20%	39.9	3.72	0.68	1.38	0.37
λ = 30%	59.8	4.46	0.83	1.03	0.25