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骨架密实型二灰碎石基层的收缩性能

DOI: 10.3969/j.issn.1674-0696.2013.02.10, PP. 215-219

Keywords: 二灰碎石混合料,干缩性能,温缩性能,配合比,limefly-ashmacadammixture,dryshrinkageperformance,temperatureshrinkageperformance,mixproportion

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Abstract:

:?基于失水率、干缩应变、干缩系数等指标,研究了不同配合比条件下二灰碎石混合料的干缩性能;回归分析了累计干缩量与时间、累计失水率的关系;通过温缩试验研究了温缩系数与温度区间、平均温缩系数与最大温缩系数的关系。试验结果表明:多碎石条件下的二灰稳定碎石干缩性能优于常规配比的二灰稳定碎石混合料。配合比分别为8∶12∶80,6∶14∶80,8∶17∶75的二灰碎石混合料干缩性能均优于配合比为5∶10∶75;评价材料温缩性能时以0~-10℃之间的温缩系数为标准较为合理。

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