Influence of steel plates on the compressive strength and pore structure of concrete

Journal of Engineering and Applied Science

Table 5 Pore characteristic parameters of specimens

	Average pore diameter (nm)	Median pore diameter (nm)	Critical diameter of capillary (nm)	Porosity (%)	Pore distribution (%)
	Average pore diameter (nm)	Median pore diameter (nm)	Critical diameter of capillary (nm)	Porosity (%)	<10 nm	10–50 nm	50–100 nm	>100 nm
C20-R0
3	33.89	80.54	76.65	24.75	15.33	8.91	39.19	36.66
7	20.37	75.21	62.61	22.77	6.64	23.14	35.22	35.00
28	18.74	39.66	47.68	19.94	13.29	31.99	27.19	27.54
C20-R2
3	36.51	85.64	81.42	25.79	21.64	11.69	35.09	31.59
7	22.54	70.53	69.92	24.74	19.11	31.14	28.95	20.81
28	20.46	40.36	49.61	22.15	21.67	37.33	19.19	21.81
C20-R4
3	39.95	92.66	92.47	28.66	10.99	8.28	45.97	34.76
7	26.14	88.50	60.33	26.54	12.63	29.70	24.97	32.70
28	23.68	52.76	66.32	25.61	20.74	32.45	23.54	23.26
C20-R7
3	46.03	106.53	100.19	31.31	13.62	13.96	36.96	35.46
7	35.85	91.60	90.47	28.71	22.41	18.38	32.70	26.51
28	27.61	69.56	67.17	26.88	25.41	27.29	25.39	21.91
C50-R0
3	28.17	76.53	73.65	20.97	16.09	45.23	14.93	23.74
7	23.85	45.26	53.62	16.24	17.71	50.23	15.24	17.05
28	20.52	30.63	22.52	13.83	21.89	64.95	6.10	7.05
C50-R2
3	30.83	80.22	80.89	26.04	12.58	48.62	22.34	16.56
7	28.33	54.40	58.65	18.40	13.44	62.25	15.14	9.17
28	22.40	38.58	35.44	16.86	22.51	64.66	10.70	2.13
C50-R4
3	35.59	86.26	89.47	28.32	10.55	52.02	20.62	16.81
7	30.26	55.19	66.79	22.20	11.67	57.69	14.65	16.00
28	26.32	42.95	42.31	18.50	22.69	61.93	6.05	9.32
C50-R7
3	40.66	95.07	97.11	30.40	19.29	38.53	24.56	17.63
7	35.23	67.61	81.26	25.33	7.56	53.16	19.99	19.30
28	31.24	50.42	56.26	21.79	11.26	64.35	16.87	7.53