Experimental Study of High-Strength Steel Fiber Lightweight Aggregate Concrete on Mechanical Properties and Toughness Index

Table 5

First-crack flexural strength and toughness indices.

Specimen	CECS13:2009/(ASTM C1018)						JCI-SF4
	/(I5)	/(I10)	/(I30)				T150 (N·mm)	(MPa)
M0.5	5.19	10.57	27.91	1.10	1.08	0.86	24.07	3.64
M1.0	5.27	10.89	28.90	1.14	1.20	0.92	31.67	4.75
M1.5	5.44	11.15	30.75	1.22	1.26	1.05	38.76	5.78
M2.0	5.58	11.56	31.42	1.23	1.28	1.20	42.63	6.42
H0.5	3.87	6.19	12.01	0.44	0.15	0.00	7.86	1.18
H1.0	5.35	10.03	20.82	1.18	1.01	0.37	19.07	2.86
H1.5	5.48	10.43	22.49	1.24	1.10	0.48	24.05	3.61
H2.0	5.76	11.38	23.96	1.38	1.31	0.58	28.08	4.21
C0.5	3.02	4.86	11.57	0.01	0.00	0.00	6.98	1.05
C1.0	3.96	6.86	17.07	0.48	0.30	0.11	13.99	2.10
C1.5	4.60	8.49	19.73	0.80	0.66	0.29	18.87	2.73
C2.0	4.82	9.64	25.78	0.91	0.92	0.71	21.78	3.27