Research On Mechanical Properties And Toughness Of Polymer Alloy Concrete For Road

Studies have shown that a single polymer is difficult to meet the material performance requirements,and polymer alloys can improve the performance of raw materials to a certain extent.Based on the previous research of polymer skeleton concrete,this thesis draws on the idea of metal alloys and adds a small amount of other types of polymers to realize the blending of the materials.In this thesis,styrene-butadiene latex is used as the basic polymer,and 3 kinds of polymers(acrylic acid ester polymer,acrylic acid ester polymer,and pure acrylic emulsion)are respectively blended,and the blending amount is 10%,20%,and 30%.In order to find the optimal combination quickly,an orthogonal experiment was designed with three factors and three levels.The factors were category,blending amount,and aggregate-cement ratio.The compressive and flexural,fracture toughness,and impact toughness of the cement and concrete were analyzed for It can improve the performance of cement concrete.Acrylate polymers and acrylate polymers can improve the flexural strength of polymer alloy binders.According to the extremely poor analysis results of the single indicators,the acrylate polymer blending amount is 20%,and the flexural strength of the polymer-cement ratio is 0.41.Compared with styrene-butadiene latex polymer binder,it is increased by 30%.From the results of the compressive test of the binder,it is known that the acrylic polymer can improve the compressive strength of the polymer alloy binder.According to the range analysis,the best solution is the acrylic polymer,the content of 10%,and the ratio of polymer to ash 0.42.Combining the orthogonal experiment to select the optimal scheme to design the polymer skeleton concrete mix ratio,and also carry out the concrete mix design for the other groups of the cement orthogonal experiment design to verify the result of the cement experiment.Through the analysis of the compressive and flexural test,it is concluded that the order of the significance of the impact on the strength of the cement and concrete is the same,and the order of the significance of the impact on the flexural strength is the polymer type(A)>the polymer cement ratio(C)>the polymer content(B),The order of the significance of the compressive strength is as follows: polymer type(A)>polymer content(B)> polymer ash ratio(C).The flexural strength of acrylic polymer alloy skeleton concrete is 1.9 times that of ordinary concrete and 1.1 times that of styrene-butadiene latex polymer skeleton concrete.The energy absorbed when damaged by impact is 22.5 times that of ordinary concrete,and 2 times that of styrene-butadiene latex polymer skeleton concrete.The fracture toughness is 1.6 times that of ordinary concrete and 1.5 times that of styrene-butadiene latex polymer skeleton concrete.Its fracture energy is 2.7 times that of ordinary concrete and 1.6 times that of styrene-butadiene latex polymer skeleton concrete.