Experimental Resesrch On Flexural Performance Of Waste Glass Powder Reinforced Concrete Beams

In recent years, due to the economic development and the quality characteristicsof glass material, the use of glass is also increasingly popular in our daily life andindustrial production, which simultaneously generates a large amount of damage andwaste glass. Due to the high cost of recycling and the complex processing, most of thewaste glasses are to landfill as a simple approach, which not only occupy theland resources but also cause the destruction of the ecological environment. The usageof waste glass in concrete is a very good approach to solve the problem of recoveryand utilization of waste glass. This article experimental studied on the concrete withthe waste glass powder replace the preparation of cement as mineral admixture andanalysis of its mechanical properties and beam specimens flexural performance.By orthogonal experimental study on the waste glass powder concrete mixtureratio, explores the best conditions of using the waste glass powder concrete under thewater/cement ratio, dosage of waste glass powder, sand ratio and waste glass powderparticle size in different levels. Through the comparison test between three differentcolors waste glass powder concretes and ordinary concrete, analyzesthe compressive strength of waste glass powder concrete cubes and the axialcompressive strength and the relationship、effects of different colors waste glasspowder on the strength of. By changing the ratio of reinforcement and wasteglass powder content two factors, conducted comparative experimental study onthe glass powder reinforced concrete beam and the normal concrete beams, andanalysis of the effect on the failure modes, the force performance and deformationperformance of waste glass powder reinforced concrete beams by changingglass powder content and reinforcement ratio, and explores the applicability of the normal section bearing capacity, deflection and maximum crack width of waste glasspowder reinforced concrete beams with the norms corresponding calculation formula.The results from the analysis: For the ratio of the orthogonal test, got theoptimal level of each factor values in the test level range, and the relationship betweenprimary and secondary of various factors affecting the waste glass powder concretecompressive strength and the significant of the influence. For the waste glass powderconcrete material test, got the effect of different colors waste glass powder concretestrength and stress-strain curve, and proposed the relationship of the cubecompressive strength and axial compressive strength of waste glass powder concrete.For the waste glass powder reinforced concrete beam flexural test, the damageprocess and morphological of glass powder reinforced concrete beams and reinforcedconcrete beam are similar; In the flexural process of waste glass powder reinforcedconcrete beam line with the plane section assumption; Reinforcement ratioremarkably impact on the carrying capacity of waste glass powder reinforced concretebeams, and with the carrying capacity of the beam reinforcement ratio improving andthe specimen showed an increasing trend; The effect of waste glass powder dosage onthe bearing capacity of reinforced concrete beams waste glass powder is not great;The bearing capacity of waste glass powder reinforced concrete beams is lower thanthe carrying capacity of ordinary concrete beams, under the same reinforcement ratio;With increasing of reinforcement ratio the deflection of waste glass powder reinforcedconcrete beams showed a decreasing trend, while the deflection increases withincreasing content of waste glass powder; The normal section bearing capacity ofwaste glass powder reinforced concrete beams applies the formula in the existingdesign of concrete structures, while the calculation formula of specification’smaximum crack width and deflection don’t meet the waste glass powder reinforcedconcrete beams no longer,need to be corrected; Finally, according to the testresults， the correction coefficient of waste glass powder reinforced concretebeams’ deflection is proposed.