Influence of Multistage Target Temperature and Cyclic Loading/Unloading on the Permeability of Polypropylene Fiber Concrete

Table 2

Test results of PPFRC loading permeability under different temperatures.

State of stress	Stress ratio (R)	Permeability (kg/×10^−17m^2)
		22°C	40°C	80°C	120°C	160°C	200°C	240°C	280°C
Graded cyclic loading	0.03	1.85	2.31	8.02	29.65	127.43	397.21	513.52	532.75
	0.10	1.71	2.13	7.46	27.79	119.11	373.92	491.66	512.42
	0.17	1.56	1.96	6.90	25.71	109.45	350.32	462.12	487.28
	0.23	1.41	1.78	6.35	23.68	101.04	330.75	436.64	463.87
	0.30	1.27	1.60	5.78	21.76	93.11	313.45	414.04	441.54
	0.37	1.16	1.44	5.27	19.78	86.32	298.34	403.91	433.56
	0.43	1.07	1.32	4.92	18.31	83.11	290.25	398.36	428.74
	0.50	1.01	1.26	4.77	17.65	81.71	287.27	395.82	425.74
Graded single loading	0.03	1.85	2.31	8.02	29.65	127.43	397.21	513.51	532.70
	0.10	1.69	2.10	7.41	27.38	118.11	367.92	483.66	506.42
	0.17	1.53	1.91	6.77	25.22	107.95	343.32	456.12	479.28
	0.23	1.37	1.72	6.14	23.01	99.04	319.75	428.64	453.07
	0.30	1.22	1.54	5.51	20.89	91.11	301.45	404.04	429.54
	0.37	1.08	1.37	5.00	18.87	84.32	286.34	390.01	414.56
	0.43	0.97	1.23	4.59	17.31	80.11	278.25	380.36	404.74
	0.50	0.90	1.16	4.35	16.43	76.71	271.27	371.82	397.74