Effect of Aggregate Proportion on Properties of Modified Recycled Concrete in Cold Region

摘要

In order to solve the problem of building waste disposal and reduce the exploitation of natural aggregate. In this paper, the recycled aggregate, which is processed by the broken construction waste, is used to prepare the modified recycled concrete for cold area. The experiments were designed for different combinations, according to the percentage of the quality of recycled coarse aggregate for the quality of recycled aggregate concrete (0%, 25%, 50%, 75%, and 100%). Orthogonal test is done to take 9 groups of experimental, and 5 kinds of the proportion of recycled aggregate were compared in each group. The rule of compressive strength, flexural strength, and permeability coefficient of recycled concrete is studied under different proportion of recycled aggregate. Finally, by comparing the experimental date, the reasonable proportion of recycled aggregate for the modified regenerated concrete is obtained.