Experimental Study On Flexural Behavior Of Permeable Concrete Beams With Basalt Fiber Reinforcement Test

Permeable concrete due to its good ecological functions as the main material of the sponge urban construction,the permeable concrete as the main material used for construction of revetment slope protection engineering,on the one hand,can rely on internal structure of the porous filter suspended solids in water,on the other hand,keeping unblocked in the internal ecological circulation channel of amphiban-ecosystem,and many other advantages.Thus it can be seen that pervious concrete has its unique ecological value and broad application prospect in ecological slope protection and bank protection engineering.However,the strength of pervious concrete material is limited.In order to ensure the good working performance and durability of pervious concrete supporting structure,basalt fiber reinforcement should be installed in the pervious concrete so that the two materials can work together to give a better bearing capacity.In order to evaluation of basalt fiber reinforced and permeable concrete work performance of two materials,this study determined by tests and comparative analysis of the linear expansion coefficient of two kinds of materials,and by drawing test and analyzes the different diameter of basalt fiber reinforced and C20 permeable concrete,the bond strength between the proves that two kinds of material can meet the basic requirement of collaborative work.In order to clear understanding of basalt fiber reinforced-permeable concrete structure of the bending properties,this study made 6 different reinforcement ratio of basalt fiber reinforced-permeable concrete simply supported beam,and reinforcement ratio was analyzed through three cent point load test failure mode of the tested beam,the influence of the determination of the crack load and ultimate load of the specimens,crack law of development,all levels of load under low beam longitudinal tensile strain of basalt fiber reinforced.The applicability of the flat section assumption in the basalt fiber-reinforced pervious concrete beam is verified and the deflection variation characteristics of the test beam are analyzed.Based on the experimental research results of this paper and combined with the experience of relevant codes,the design and calculation method of the flexural bearing capacity of the normal section of basalt fiber-reinforced pervious concrete beam is derived theoretically.Calculation method for short-term stiffness of basalt fiber-reinforced pervious concrete beams under bending;The comparison between the theoretical calculation results and the actual test results proves that the design calculation method proposed in this paper is feasible.