Strength study of basalt-polypropylene hybrid fiber lightweight aggregate concrete
To study the influence of basalt-polypropylene hybrid fiber on the strength of lightweight aggregate concrete,the cubic compressive strength test and splitting tensile strength test were carried out by adding basalt fiber and polypropylene fiber of different volume ratio mixed or alone in lightweight aggregate concrete.The fiber hybrid coefficient was introduced to explore the influence of fiber volume ratio and fiber hybrid effects on the strength of lightweight aggregate concrete.The adaptive network-based fuzzy inference system(ANFIS)was utilized to predict the compressive strength of the cube.The results show that the maximum compressive strength and splitting tensile strength of lightweight aggregate concrete cube can be increased by 24.0％,7.7％and 13.9％,26.9％,respectively by adding basalt fiber and polypropylene fiber alone.The splitting tensile strength of the matrix can be increased by up to 30.77％by mixed basalt and polypropylene fiber,but the improvement effect on the compressive strength is not good.The basalt-polypropylene hybrid fiber obviously improves the brittleness of lightweight aggregate concrete,while it has negative and positive hybrid effects on the compressive strength and the splitting tensile strength,respectively.The established ANFIS model has high prediction accuracy,which verifies the reliability of the strength prediction of basalt-polypropylene hybrid fiber reinforced lightweight aggregate concrete based on ANFIS.
NETL
NSTL
万方数据
