Orthogonal Test of Flexural Toughness for Hybrid Fiber Reinforced Concretes
Orthogonal tests are designed for hybrid fiber reinforced concrete. Bending toughness of hybrid fiber reinforced concrete, with the substrate intensity C30, the quantity of the volume for the steel fiber dosage 0~1.5% and polypropylene fiber dosage 0~0.3%, are studied. The results show that the hybrid fibers significantly improve the toughness of the concrete matrix. When the dosage reaches to a certain number, the affection of fiber toughness is decreased. Based on the test results the best dosage of hybrid fibers which is the steel fiber 1% mixed with 0.1% polypropylene fiber is recommended.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
X. F. Liu et al., "Orthogonal Test of Flexural Toughness for Hybrid Fiber Reinforced Concretes", Advanced Materials Research, Vols. 239-242, pp. 2006-2010, 2011