Finite Element Analysis of Flexural Tensile Property About Layered Steel Fiber Inorganic Polymer Lightweight Aggregate Concrete

Abstract

Layered steel fiber structure can effectively improve the flexural strength and toughness of inorganic polymer lightweight aggregate concrete under the condition of less steel fiber content. The flexural tensile strength of steel fiber reinforced inorganic polymer lightweight aggregate concrete with steel fiber volume ratio of 0.9%, 1.2% and 1.5% increased by 35.44%, 38.52% and 40.03%, respectively. The flexural tensile strength of double deck steel fiber (upper layer 0.9%, lower layer 1.2%) increased by 39.24%. ABAQUS was used to simulate the flexural behavior of layered steel fiber inorganic polymer lightweight aggregate concrete. The finite element model can accurately calculate the bending strength of layered steel fiber reinforced inorganic polymer lightweight aggregate concrete beam, the calculated value of the ultimate load is in good agreement with the experimental results. The flexural strength of concrete is an important index of pavement and bridge deck. Layered steel fiber reinforced concrete (LSFRC for short) is a certain thickness of concrete within steel fiber, and the rest is plain concrete. LSFRC can be obtained with steel fiber reinforced concrete with similar flexural strength, and greatly saves the cost by using small amount of steel fiber. Based on layered steel fiber reinforced inorganic polymer lightweight aggregate concrete (LSFIPLAC for short), the tensile strength and toughness also can be improved with lower cost [1-4].