Experimental Study On Properties Of Rubber Aggregate Plastic Concrete

Rubber aggregate plastic concrete is a new type of high-performance concrete mixed with a certain amount of rubber particles processed by the waste tires in terms of ordinary concrete. Research on rubber aggregate plastic concrete both at home and abroad in an early stage, rubber aggregate affect plastic concrete influence law and influence mechanism has also not been reported. A unified plastic concrete test methods and evaluation index system have not been established. So this article put forward a new plastic concrete test methods and the corresponding evaluation index, combined plastic concrete technical performance requirements on the basis of summarizing existing achievements. And Researching on rubber aggregate affect plastic concrete influence law and influence mechanism. Draw the following findings and conclusions.(1) In the strength test, through the analysis of both ordinary concrete and plastic concrete strength and loading speed and loading time, Obtaining suitable for rubber aggregate plastic concrete loading speed. Contrast to measure intensity of standard test parts with non-standard test cube compressive strength, drawing rubber aggregate plastic concrete conversion factor of standard test parts with non-standard test and prism standard test parts with non-standard test. Contrast to standard test cube compressive strength and axial compressive strength, drawing conversion factor. And detailed analysis of the mechanism based on hoop effect and he biggest drawback theory.(2) In the elastic modulus test, put forward new methods of testing plastic concrete elastic modulus. Comparative experimental studies have shown that the improved method use easily and measure accurately, Eliminating conventional methods testing elastic modulus Error and inconvenience. Draw influence law of rubber aggregate plastic concrete elastic modulus through test in different gauge. Research the main factors of affecting rubber aggregate plastic concrete elastic modulus. Draw prediction formula of rubber aggregate plastic concrete elastic modulus.(3) In the permeability test, introduce the relative permeability coefficient of plastic concrete test method in detail. Combining technical characteristics of rubber aggregate plastic concrete, put forward suitable test constant water pressure of rubber aggregate plastic concrete, Give a new Sealing material mixture ratio. Experimental studies have shown that sealing material of fly ash and yellow glycerol produced by the mass ratio of 0.7:1, cold construction operation can accomplish good sealing effect. Simplifies the operation of paraffin as a sealing material cumbersome thermal operation. And based on test results, research the main factors of affecting rubber aggregate plastic concrete elastic modulus permeability, give important order of the impact of various factors.(4) Finally, by virtue of scanning electron microscope SEM map, from the microscopic point of view, revealed the main factors of affecting rubber aggregate plastic concrete affecting concrete strength and permeability properties.