二灰碎石混合料配合比设计方法

为了改善二灰碎石基层的路用性能，尤其是提高其抗裂性能和抗冲刷性能，通过振实试验确定了粗集料的级配，并通过理论计算对试验结果进行了验证；同时采用正交试验方法确定了二灰砂浆的最佳配合比，并应用方差分析法确定了因子对试验指标作用的显著程度；最后通过体积法确定了粗集料与二灰砂浆的合理配合比。试验结果表明，该配合比的二灰碎石混合料的各项路用性能指标均优于《公路路面基层施工技术规范》推荐配合比的二灰碎石混合料的性能指标。

Mix Ratio Design of Lime-fly-ash Stabilized-aggregates-mixtures

In order to improve the pavement performance of lime-fly-ash stabilized-aggregates, es- pecially to strengthen its anti-crack performance and anti-brushing performance, this paper determines the gradation of the mixed aggregates with the method of vibrating test, verifies the result of test by the theory calculation. The orthogonal test is utilized to determine the best mix ratio of lime fly ash mortar, the effect factor to the index of test is determined with the variance analytical method, the ratio of coarse aggregates to lime-fly-ash mortar is presented by the volume method. The test results indicate that the pavement performance of the lime-fly-ash stabilized-aggregates produced by this ratio is better than the one produced by the ratio of Chinese Highway Specifications. 14 tabs, 1 fig, 9 refs.