摘要
引进贝雷法矿料级配检验手段,结合碎石力学指标CBR,对级配碎石规范范围内选取的12个典型的级配进行检验,分析了CA比、FAc比、FAf比和K值对CBR的影响。试验结果表明:CA和CBR的相关系数为0.6901,K值和CBR的相关系数为0.8178,FAc比和FAf比对CBR的影响不明显。因此,用CBR、CA比和K值这三项指标评价级配碎石性能是可行的。CA在0.58左右的级配碎石混合料有较高的强度,并建议其K值在92.99～104.58之间。
Selecting within the scope of graded crushed stone specification, 12 typical aggregate gradations are examined by Bailey method combined with their mechanical index of CBR. The results show that the correlation coefficient of CA and CBR is 0. 6901, the correlation coefficient of K-value and CBR is 0. 8178, and FAc and FAf have no significant effect on CBR. Therefore, it is possible to evaluate the graded performance with CBR, CA and K-value. The CA value in 0.58 around the mixture has higher strength, and it is suggested that the K-value of CA is between 92.99 - 104.58.
出处
《水利与建筑工程学报》
2013年第1期88-92,101,共6页
Journal of Water Resources and Architectural Engineering
基金
贵州省交通运输厅科技项目"仁赤高速红砂岩类岩石工程特性及施工技术"(2011-122-030)
关键词
级配碎石
矿料级配
贝雷法
评价参数
graded crushed stone
aggregate gradation
Bailey method
evaluation parameter
