Experimental Study On The Performance Of Permeable Concrete With Different Dimensions Of Basalt Fiber

Pervious concrete(PC)is an environmentally friendly concrete that uses a thick aggregate surface coated with a thin slurry to form a Honeycomb that allows water to pass through quickly,and the colors and landscapes are combined to make the urban environment more harmonious.The permeable concrete is a new kind of material which can construct suitable living environment for people,and it is the basic development direction of sustainable development in China,which should be widely used.The porosity of permeable concrete makes it have poor bearing capacity,low antifreezing and melting properties,poor wear resistance,and easy cracking and difficult to repair.In order to extend the application scope of permeable concrete,conventional factors such as water-ash ratio and aggregate particle size are considered,and fiber is added to improve the physical and mechanical properties of permeable concrete.In test 6mm,12 mm and 20 mm basalt fibers were mixed into the permeable concrete,and the effect of fiber length ratio on the permeable concrete was studied.It is found that the compressive strength and compressive strength of waterpermeable concrete after adding basalt fiber have been increased with the increase of fiber size.The permeable coefficient and porosity of permeable concrete after adding 6mm and 12 mm basalt fiber did not change much,but the permeable coefficient and porosity decreased significantly after adding 20 mm basalt fiber.The antifreeze and melting properties of water-permeable concrete after adding basalt fibers are strengthened with the increase of fiber size.The performance factor of 12 mm basalt fiber is more suitable for practical concrete production.Figure 37;Table 30;Reference 41.