Research On Performance Of Waste Glass Concrete Long Column In Compression

Waste glass which has a notoriety of "flash color pollution" is a kind of industrial waste and living garbage. Although some white glass can be processed to be glass again in waste glass, but the utilization ratio is low, much of the waste glass can not be reused. The key to improve the utilization ratio is to use the colored and texture mixed waste glass effectively. Adding waste glass into concrete to improve the utilization of waste glass, can not only improve the environment, but also improve the performance of the concrete.Recent years, some experts and scholars at home and abroad have done some researchs on the waste glass concrete, but most of the research was the basic mechanics performance study. Column is an important structure of the stress componentst, if we want to use the glass concrete column in actual engineering, we must carry on the further research. In this paper, eight root glass concrete columns have been research by the eccentric compression test, and analysed by the ABAQUS finite element program, the mainly conclusions are as follows.(1)Through the eccentric loading test, it is known that the failure mechanism and mode of glass concrete long column are similar to these of common concrete long column. In eccentric loading process, the strain change of glass concrete long along the section height was accord with flat section assumption basically, and lateral deformation along the column high direction accord with sine half-wave curve basically.(2)Under eccentric loading test, the lateral deformation and longitudinal deformation, concrete compressive strain and steel bar strain curveg of lass concrete column are similar to these of ordinary concrete column. Under the same slenderness ratio, glass concrete column of50%glass dosage has the lowest bearing capacity, glass concrete column of100%glass dosage has the highest bearing capacity. In the same dosage glass, the bearing capacity of glass concrete column decreased with the increase of slenderness ratio. It is feasible in general that calculate glass concrete column eccentric compression normal section bearing capacity use the common concrete standard formula, but due to the sample quantity is limited, eccentric compression normal section bearing capacity calculation of the glass concrete column needs further research.(3)By comparing the ABAQUS finite element analysis results with the test results, it is known that the destructive form, concrete and steel stress distribution, lateral deformation, bearing capacity and so on of ABAQUS are very close to the test result. The lateral deformation of glass concrete column under eccentric compression decrease with the increase of the glass dosage and increase with the increase of the slenderness ratio; the bearing capacity of glass concrete column decreased with the increase of slenderness ratio.(4) Through the analysis, it is feasible that use the glass concrete column in practical engineering. Replaceing natural aggregate with waste glass has significant social, economic and environmental benefits, and it is consistent with the national sustainable development of the macroscopic strategy.