Geofluids

Research Article

An Experimental Study on Mechanical Properties and Fracture Characteristics of Saturated Concrete under Coupling Effect of Low Temperature and Dynamic Load

Table 1

Test conditions and calculation results.


No.	Water content	Temperature (°C)	Height (mm)	Diameter (mm)	Dynamic compressive strength (MPa)	Strain rate (s^-1)	Peak strain (10^-3)	Incident energy (J)	Reflected energy (J)	Transmission energy (J)	Absorbed energy (J)	Energy dissipating rate- (%)

5-1	Saturated	Room temperature	38.02	75.51	40.16	40.05	9.60	33.87	22.70	0.38	10.79	31.86
5-2			38.49	75.69	42.70	40.15	9.12	33.88	22.14	0.42	11.32	33.41
5-3			38.12	75.44	41.59	40.29	9.54	33.45	21.98	0.46	10.89	32.56
6-1		-5°C	38.28	75.77	67.44	38.57	7.91	33.19	15.86	0.93	16.4	49.41
6-2			38.56	75.46	68.50	38.41	8.01	33.46	15.79	0.95	16.72	49.97
6-3			38.99	75.66	65.20	38.65	7.95	33.52	16.01	0.99	16.52	49.28
7-1		-10°C	38.48	75.39	71.49	37.54	7.66	33.61	14.2	0.83	18.58	55.28
7-2			38.18	75.89	73.16	37.23	7.81	33.63	14.92	0.85	17.86	53.11
7-3			38.96	75.46	69.23	37.46	7.58	33.24	13.98	0.86	18.4	55.35
8-1		-15°C	38.28	75.61	76.02	36.99	7.15	33.38	12.79	0.85	19.74	59.14
8-2			38.56	75.69	75.42	37.05	7.49	33.94	12.06	0.82	21.06	62.05
8-3			38.46	75.44	78.12	36.95	7.12	33.78	12.86	0.81	20.11	59.53

1-1	Natural	Room temperature	38.48	75.67	50.69	39.96	8.51	33.04	18.65	0.51	13.88	42.01
1-2			38.20	75.78	49.15	39.04	8.01	33.44	19.04	0.49	13.91	41.60
1-3			38.94	75.98	51.20	39.55	7.89	33.64	18.05	0.47	15.12	44.95
2-1		-5°C	38.44	75.47	65.41	37.57	7.08	33.42	14.13	0.96	18.33	54.85
2-2			38.23	75.46	64.13	38.01	7.14	33.41	14.88	0.94	17.59	52.65
2-3			38.41	75.66	63.21	38.12	7.35	33.59	14.56	0.95	17.76	52.87
3-1		-10°C	38.82	75.28	67.85	37.05	6.94	33.80	13.40	0.96	19.44	57.51
3-2			38.16	75.14	69.12	36.85	6.82	33.45	13.12	0.92	18.64	55.72
3-3			38.51	75.29	65.33	36.97	7.01	33.94	13.89	0.91	19.14	56.39
4-1		-15°C	38.44	75.39	69.17	36.85	6.70	33.05	11.88	0.90	20.27	61.33
4-2			38.65	75.44	68.24	36.47	6.65	33.46	11.99	0.89	20.58	61.51
4-3			38.21	75.02	70.94	36.59	6.59	33.01	12.24	0.88	19.89	60.25