掺有硫酸钠石灰类稳定土的强度与体积变化

全面研究了不同的硫酸钠掺量、混合料组成、养生温度以及闷料时间等条件下的石灰类稳定土的强度和体积变化规律。试验结果得出：硫酸钠掺量是影响稳定土强度发展与体积变化的内在决定因素，一定的混合料组成和养生温度下存在一最佳硫酸钠掺量；控制闷料时间是取得最佳稳定效果的有效工艺途径，闷料时间的延长可以显著降低乃至完全消除稳定土的体积膨胀量。

Strength and volume change of lime stabilized soils with sodium sulphate

Strength and volume change laws of lime-stabilized soils under the conditions of various sodium sulphate contents, mixture ratios, curing temperatures and curing times were studied in this paper. Experiment results indicated that sodium sulphate content was internal determinant factor affecting strength developing and volume change of stabilized soils, and there was a optimum sodium sulphate content under certain mixture ratio and curing temperature; controlling the moist curing time of mixture was an effective technological way to reach best soil stabilizing result,and increasing moist curing time of mixture may efficiently reduce even completely eliminate volume expansion of stabilized soils. The research achievement could be used as a guide to expanding the application of sodium sulphate as a additive in soil stabilization, to increasing the technical effect of the additive, and to the utilization and treatment of salty soils.