石灰改良高液土工程特性试验研究  

Study on Engineering Characteristic Test of Lime Modified High-liquid Soil

作　　者：杨戈[1,2] 林盛[3] 

机构地区：[1]上海同科交通科技有限公司,上海市2000092 [2]同济大学机场工程研究中心,上海市200092 [3]同济大学道路与交通工程教育部重点实验室,上海市201804

出　　处：《城市道桥与防洪》2016年第6期292-295,26,共4页Urban Roads Bridges & Flood Control

摘　　要：现有针对高液限土掺灰改良工程特性的研究中,土样制备大多采用干法,而不考虑湿法。展开室内试验,通过控制不同石灰剂量和制样方式,从界限含水率、击实性能和CBR强度三个方面评价高液限土掺灰改良后工程特性。结果表明,相同石灰掺量下,湿化制样得到的压实最佳含水率远大于干法制样得到的结果。制样方式对试验结果有重要影响,建议在高液限土的相关试验研究中采用湿法制样。Aiming at the study on the engineering characteristic of high-liquid limit soil lime modification,the preparation of soil sample is mostly used by drying process without considering the wet process. The indoor test is carried out to evaluate the engineering characteristic of the modified high-liquid limit soil mixed with lime from three aspects of boundary water content, compaction performance and CBR strength by the control of the different lime dosages and sample preparation modes. The conclusion shows that the optimum compacted water content obtained by the wet prepared example is greatly larger than the result by the drying process under the same lime dosage. The sample preparing method has the great influence on the test result. It is proposed that the sample preparation by the wet process is used in the relative test study.

关 键 词：高液限土 石灰改良 工程特性 湿法制样 

分 类 号：TU5[建筑科学—建筑技术科学]