论文部分内容阅读
为了解冻融环境下碾压混凝土的性能衰减规律,利用冻融试验和抗剪试验,对冻融环境下不同粉煤灰掺量的碾压混凝土进行抗剪断分析,研究了碾压混凝土的质量损失特征和抗剪参数变化特征。结果表明,在相同的冻融条件下粉煤灰掺量为60%的碾压混凝土的质量损失率最大,本体碾压混凝土的抗冻性优于层面碾压混凝土;本体碾压混凝土的抗剪断参数值比层面碾压混凝土的高;粉煤灰掺量为50%左右时,碾压混凝土的抗剪强度达到相对最佳。
In order to understand the law of attenuation of RCC properties in freeze-thaw environment, by using freeze-thaw test and shear test, the RCC of different fly ash content in freeze-thaw environment was analyzed for shear resistance. The quality of RCC Loss characteristics and shear characteristics of shear parameters. The results show that the mass loss rate of roller compacted concrete with fly ash content of 60% under the same freeze-thaw conditions is the highest, and the freeze-thaw resistance of roller compacted concrete is better than that of surface roller compacted concrete. The shear resistance of roller compacted concrete The parameter value is higher than the level of RCC; When the content of fly ash is about 50%, the RCC shear strength reaches the relative best.