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首页> 外文期刊>European Journal of Environmental and Civil Engineering >Compaction behaviour and particle crushing of a crushed sandstone particle mixture
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Compaction behaviour and particle crushing of a crushed sandstone particle mixture

机译：压碎的砂岩颗粒混合物的压实特性和颗粒破碎

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摘要

The density-moisture curves for five crushed sandstone particle mixtures, with different grain size distribution curves, were determined by a standard compaction test. The values of the maximum dry density and optimum moisture content, deduced from the compaction tests, range from 2.04 to 2.11 g/cm~3 and from 7.56 to 10.11%, respectively. The variations of the maximum dry density and optimum moisture content of the mixtures, with the median particle size, gravel content, uniformity coefficient and curvature coefficient, were analysed. The grain size distribution curve for each tested material after compaction was analysed by a standard sieve analysis test for the purpose of analysing the particle crushing. Testing results indicate that the difference in the grain size distribution curves after compaction, for the tested materials with the same original particle size distribution curve and different water contents, is very small. The average relative breakage was therefore used to evaluate the particle crushing. The effects of the factors, such as the median particle size, gravel content, uniformity coefficient and curvature coefficient, on the average relative breakage, were analysed based on the testing data.
机译：通过标准压实测试确定了五种具有不同粒度分布曲线的压碎砂岩颗粒混合物的密度-湿度曲线。由压实测试得出的最大干密度和最佳水分含量分别为2.04至2.11g / cm〜3和7.56至10.11％。分析了混合物的最大干密度和最佳水分含量随中值粒径，砾石含量，均匀性系数和曲率系数的变化。为了分析颗粒破碎，通过标准筛分析试验分析了压实后每种测试材料的粒度分布曲线。测试结果表明，对于具有相同原始粒度分布曲线和不同水含量的被测材料，压实后的粒度分布曲线差异很小。因此，将平均相对破损用于评估颗粒破碎。根据试验数据分析了中值粒径，砾石含量，均匀度系数和曲率系数等因素对平均相对破损的影响。

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