碱渣石灰土试样应加水量公式误差分析与修正  

Analysis and correction of the error of the formula of the amount of water to be added to the soda residue lime soil

作　　者：李清 赵婧如 王小丫 吴竺玲 朱智凌 李嘉瀚 LI Qing;ZHAO Jingru;WANG Xiaoya;WU Zuling;ZHU Zhiling;LI Jiahan(Jiangsu Province Salt Industry Research Institute,Huai’an 223200;Huaiyin Institute of Technology,Huai’an 223003)

机构地区：[1]江苏苏盐井神股份有限公司,江苏淮安223200 [2]淮阴工学院交通工程学院,江苏淮安223003

出　　处：《福建建筑》2024年第11期102-105,共4页Fujian Architecture & Construction

基　　金：江苏省大学生创新创业项目(项目编号:202311049029Z)。

摘　　要：一定含水量是石灰稳定土获得良好路用性能的前提保证。规范(JTG E51-2009)给出的应加水量公式,与碱渣石灰土击实试验等实验试件实际含水率与目标含水率存在一定误差。为此,设计不同碱渣掺量和不同目标含水率碱渣石灰土击实试验,分析碱渣石灰土实际含水率和目标含水率误差,并对原应加水量公式进行修正。结果表明:按规范原应加水量公式加水,导致试件实际含水率与设计目标含水率误差显著;通过误差多元线性拟合,考虑碱渣掺量和目标含水率影响因素,在原加水量公式基础上设计修正系数η,来修正加水量公式,并给出修正系数表达式。通过新旧公式误差精度分析,结果显示,按修正后新公式加水量加水,碱渣石灰土试样实际含水率更接近设计含水率,新公式更适用于碱渣石灰土加水量计算。研究成果对于碱渣石灰土配合比设计与施工含水量控制,具有较好的借鉴价值。A certain water content is the precondition for good road performance of lime stabilized soil.There is a certain error between the actual moisture content and the target moisture content of the test specimens,such as the soda residue lime soil compaction test,given by the formula for the amount of water to be added in the specification(JTG E51-2009).For this reason,the concreting experiments of soda residue lime soil with different soda residue content and different target moisture content were designed to analyze the actual moisture content of soda residue lime soil and the error of target moisture content,and the original formula of adding water was revised.The results showed that adding water according to the standard formula resulted in significant error between the actual moisture content of specimens and the designed target moisture content.Through the error multiple linear fitting,considering the influence factors of soda residue content and target moisture content,the correction coefficientηis designed on the basis of the original water addition formula to modify the water addition formula,and the expression of correction coefficient is given.Through the error precision analysis of the new formula and the old formula,the results show that the actual moisture content of soda residue lime soil samples is closer to the design moisture content according to the modified new formula,and the new formula is more suitable for the calculation of moisture content of soda residue lime soil.The research results have a good reference value for the mix design of soda residue lime soil and the control of construction water content.

关 键 词：碱渣 碱渣石灰土 目标含水量 应加水量 修正设计 

分 类 号：TU5[建筑科学—建筑技术科学]