EDTA滴定法测定石灰土中石灰含量研究  

Research on Lime Content in Limestone Soil Determined by EDTA Titration Method

作　　者：战高峰[1] 于爱民[1] 朱福[1] 

机构地区：[1]吉林建筑大学交通科学与工程学院,长春市130118

出　　处：《北方交通》2017年第8期47-51,共5页Northern Communications

基　　金：吉林省交通厅项目(2011103)

摘　　要：依托吉舒高速公路工程建设项目,对石灰土的不同石灰掺入比、不同石灰土拌和方案、不同石灰土掺灰方式以及石灰土的不同含水率进行EDTA滴定,得出石灰土中石灰剂量的衰减规律。研究结果表明:随着龄期的增长,石灰土中石灰剂量呈下降的趋势,但下降的趋势逐渐变缓;拌和方法为干土法和湿土法相比,干土法的石灰土中石灰衰减量大;掺灰方法为二次掺灰和一次掺灰相比,二次掺灰的石灰土中石灰衰减量大;相同龄期内随着含水率的增大石灰土中石灰的衰减量也增大。Relying on the engineering construction project of Jishu Expressway,EDTA titration is made for different mixing ratios of lime in limestone soil,different mixing schemes for limestone soil,different lime-mixing methods for limestone soil and different water contents of limestone soil,so as to obtain the attenuation law of lime dosage in limestone soil. The research results show that,with the increase of age of concrete,the lime dosage in limestone soil shows a decreasing trend,but the decreasing trend gradually slows down; mixing methods include water-reducing method and watering method,the attenuation of lime in limestone soil is large by using the water-reducing method; lime-mixing methods include secondary lime mixing and primary lime mixing,the attenuation of lime in limestone soil is large by using the secondary lime mixing; during the same period of age of concrete,with the increase of water content,the attenuation of lime in limestone soil also increases.

关 键 词：EDTA滴定 石灰土 石灰剂量 

分 类 号：U414.03[交通运输工程—道路与铁道工程]