Experimental Study On Waste-Concrete--Cement

Has been widely used in soil-cement foundation,the slope reinforcement,the pit,grouting,and other projects,but also because of soil-cement intensity is not high,large deformation, and other factors is limited.In recent years,the concrete admixture rapid development of soil,which can improve the performance of soil cement,such as engineering to adapt to the needs of the early strength,and enhance,the ability to increase the permeability condensate,and so gentle.With the large number of concrete waste reuse and the resulting rise of the author of an waste cement concrete as a soil additive,to explore the waste concrete - cement-soil strength characteristics of the deformation characteristics, factors and changes in the law,the establishment of an abandoned concrete - cement Soil strength model, the analysis of the waste as a soil-cement concrete admixtures in the economic feasibility for the abandoned concrete - in the cement-soil engineering and provide a theoretical basis.In a large number of tests, based on an analysis of scrap paper first waste concrete - cement-soil strength and the impact of changes in the law. Test shows that the waste cement concrete to improve the engineering properties of soil, especially soil reinforced cement compressive strength results, you can increase the intensity of soil-cement about 20%. Waste concrete and cement are the best mix: cement 5% -25%, an abandoned concrete for the best 15% -20%. Followed by the application of uniform design experiments, quantitative analysis of the amount of waste concrete, cement content and age and other factors affect the strength of the size. During the trial, and on the basis of the establishment of an abandoned concrete - cement-soil strength and volume of cement, concrete waste volume and intensity of the relationship between age model, this model can come to a different mix of cement-soil strength. On the other hand, the analysis of the waste concrete - cement compression damage to the soil characteristics, according to a lot of stress - strain curves on the cement-soil damage response, the deformation modulus, and other targets with the pressure, and the compressive strength of the relationship between Statistics on the laws. Finally, the price of Economics Theory as the guide, an analysis of the project on an abandoned concrete application - in the soil cement economic feasibility. The results showed that the introduction of a certain amount of waste concrete, cement can save 20% - 40%, 10% lower costs.