One-dimensional Compression Of Construction Waste Embankment Fillings Andcreep Test Study

With the rapid development of industrialization and urbanization,and the development of “One Belt and One Road” development in full swing,it has not only greatly stimulated the domestic construction materials industry,but has also led to a sharp increase in the production of construction waste,resulting in supply and demand and environmental pollution.In order to resolve this contradiction,the contradiction between the persons at the current stage proposes the reuse of construction waste as a road building material.At present,there are deficiencies in research on the deformation of construction rubble embankment.Based on the Xi Xi Xian North Ring Expressway project,the paper studies the physical and mechanical properties and long-term performance of recycled materials for construction waste,and focuses on the analysis of one-dimensional compression of recycled materials for construction waste.Under and after long-term saturated and dry deformation characteristics.According to the conditions of the embankment filling,according to the ratio of brick slag: concrete slag: mortar slag 4:5:1,5:4:1,6:3:1,7:2:1 and 100% brick residue In comparison,conventional geotechnical tests were conducted on recycled indoor building materials to obtain the physical and mechanical indicators of the material.Through the large-scale compression test,the relationship between the compression index and the load,compaction degree and proportioning ratio was analyzed.The order of the influence of the compaction degree and proportion on the compression factor and the evaluation load and pressure were respectively obtained by using the range analysis and variance analysis.The significance of the influence of the three factors of solidity and proportioning.Finally,based on the initial state of construction waste and the variation law of dry density during the compression process,the existing calculation method of subgrade settlement has been improved,and the rationality of the calculation method has been verified by the combination of indoor test results and actual engineering.Based on the above studies,this paper studied the long-term performance of construction waste reclaimed materials through self-made instruments,and analyzed the long-term deformation characteristics of construction waste reclaimed materials under saturated and dry conditions,comparing 7:2:1,5.: 4:1 and brick slag three different ratio of construction waste samples in the water and dry state differences,according to the strain rate of the stage of the creep stage.The first-order derivative and second-order derivative of the relationship between the strain and time of construction waste are derived.It is concluded that the creep process of construction waste is decay-type creep.Based on the Kelvin model,Kelvin-hyperbolic empirical creep calculation is established.Formula,and verified the rationality of the formula by indoor test results.