摘要
进行水泥稳定土的重型击实试验,确定各配合比条件下水泥稳定土的最优含水率和最大干密度;采用无侧限抗压强度试验,确定水泥稳定土混合料适宜的水泥和添加剂剂量。研究结果表明:添加剂掺量对水泥稳定土最优含水率和最大干密度的影响不大;掺1%,2%添加剂时,最优含水率和最大干密度变化甚微;随着水泥剂量的增大,水泥稳定土7天无侧限抗压强度增大,强度变异系数减小,表明路面结构层出现强度薄弱区的概率减小;推荐满足我国高速公路和一级公路(重交通)等级基层材料适宜水泥剂量为12.00%,底基层材料适宜水泥剂量为6.75%;添加剂掺量宜为水泥质量的2.00%。
Perform the heavy compaction test of cement stabilized soil and determine the optimum water content and maximum dry density of the cement stabilized soil under different mixture ratios; use unconfined compressive strength （UCS） test to determine the suitable cement and additive dosage of cement stabilized soil mixture. The research results show that the effect of the content of additives on optimum moisture content and maximum dry density of cement stabilized soil is unobvious, optimum moisture content and maximum dry density of cement stabilized soil with 1% and 2 % additive has hardly changed; 7 days＇unconfined compressive strength of cement stabilized soil increases and the variation coefficient of strength decreases, which induces that the smaller probability of strength weak area appearing in the pavement structure layer; it is recommended that the suitable dosage of cement for the base materials and subbase materials meeting the class of highways and first grade roads （heavy traffic） in our country is 12. 00 % and 6. 75 % respectively; and the additive dosage is 2. 00 % of the cement quality.
出处
《路基工程》
2017年第4期120-122,127,共4页
Subgrade Engineering
关键词
道路工程
击实试验
无侧限抗压强度
水泥掺量
添加剂掺量
road project
compaction test
unconfined compressive strength
cement dosage
additive dosage
