Experiment on Basic Mechanical Properties of Waste PP Fiber Recycled Concrete
The work aims to explore the influence of waste PP fiber on the mechanical properties of recycled concrete according to the factors such as fiber volume content,aspect ratio and recycled aggregate replacement rate,so as to improve the utilization rate of waste fiber.Methods 11 groups of waste PP fiber recycled concrete test blocks were prepared by mixing waste PP fiber with different length-diameter ratio as reinforcement and recycled concrete with different volume content and different recycled aggregate replacement rate.The results showed that the volume fraction and length-diameter ratio of waste PP fiber were 1.5％and 47.85 respectively when the cube compressive strength and splitting tensile strength were the best.At the same time,the cube compressive strength and tensile strength of waste PP fiber recycled concrete are also related to the replacement rate of recycled aggregate,and its strength is approximately linear with the replacement rate of recycled aggregate.The test proves that the incorporation of waste PP fiber can enhance the recycled concrete and affect the improvement of cube compressive strength and splitting tensile strength.
recycled concretewaste PP fiberreplacement rate of recycled aggregatemechanical properties
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