An Orthogonal Test of Steel-polypropylene Hybrid Fiber Lightweight Aggregate Concrete

Abstract

Using orthogonal test, cubic anti-pressure test and splitting tension strength test were carried out on 9 groups of steel-polypropylene (PP) hybrid fiber lightweight aggregate concrete and 1 group of standard lightweight aggregate concrete, in order to explore the impacts of steel fiber content, length-diameter ratio of PP, and PP content on light aggregate concrete's mechanical performance. Based on the test results, an optimum mix ratio of steel- PP hybrid fiber lightweight aggregate concrete has been found.