Effects of Hybrid Polypropylene-Steel Fiber Addition on Some Hardened Properties of Lightweight Concrete with Pumice Breccia Aggregate

Table 2

Effects of hybrid polypropylene-steel fiber addition on hardened properties of LWC with pumice breccia aggregate (mean ± standard deviation).

Volume fraction of steel fiber; (%)	Demoulded density; (kg/m^3)	Compressive strength; (MPa)	Modulus of elasticity; (MPa)	Splitting tensile strength; (MPa)	Modulus of rupture; (MPa)
0.0	1764.78 ± 5.92	16.45 ± 0.35	7317.49 ± 396.18	1.24 ± 0.07	2.78 ± 0.16
0.5	1857.33 ± 16.18	19.15 ± 0.43	9125.91 ± 353.25	2.56 ± 0.12	4.45 ± 0.22
1.0	1874.06 ± 10.45	20.14 ± 0.54	8191.96 ± 409.67	3.06 ± 0.03	7.16 ± 0.36
1.5	1902.09 ± 17.53	19.71 ± 0.64	7492.72 ± 657.91	3.99 ± 0.23	8.00 ± 0.73
2.0	1932.86 ± 3.74	18.56 ± 0.41	6836.53 ± 872.73	3.76 ± 0.18	7.98 ± 0.72