脱硫石膏粉煤灰混合材料用作地基填料的试验研究  

Study of mixed-FGD gypsum fly ash which as filling material

作　　者：宋光胜[1] 顾强康[1] 余承华[1] 苏立海[1] 张仁义[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《四川建筑科学研究》2012年第6期214-218,共5页Sichuan Building Science

摘　　要：以贵州纳雍电厂粉煤灰和脱硫石膏为研究对象,运用我校顾强康教授自行设计的高压固结直剪仪,对粉煤灰中掺入不同比例的脱硫石膏形成混合材料,通过击实试验、压缩试验和直剪试验研究不同脱硫石膏含量下粉煤灰的工程特性,与纯的粉煤灰作对比,得到不同脱硫石膏含量对粉煤灰变形及强度特性的影响规律。文中给出了实际工程中利用粉煤灰与脱硫石膏混合材料的掺和比例。The fly ash and FGD gypsum as the object of study are taking from the Guizhou Nayong Thermal Power Plant. Different quantities of FGD gypsum are used to obtain the mixed-gypsum fly ash, then the engineering characteristics of fly ash with different quantities of gypsum mixed are studied via compaction test, compression test, and direct shear test. Comparing with pure fly ash, the trends of influence of different quantifies of gypsum mixed on deformation and strength characteristics of fly ash are also obtained. The paper offers the proportion of fly ash and FGD gypsum in practical engineering.

关 键 词：粉煤灰 脱硫石膏 地基处理 工程性质 

分 类 号：TU599[建筑科学—建筑技术科学]