新型CSA膨胀剂的水泥基材料性能  

Properties of cement based materials for new CSA expansive agent

作　　者：杨璐 王妮 YANG Lu;WANG Ni(School of Architecture and Civil Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,沈阳110870

出　　处：《沈阳工业大学学报》2018年第2期219-223,共5页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(11102118)

摘　　要：针对水泥工业排放出的CO2过量问题,研究了一种采用工业副产品(流化床锅炉灰)为原料的绿色CSA膨胀剂,并对新型CSA膨胀剂的基本性能和力学性能进行了研究.根据XRD衍射图谱进行分析,探讨了新型膨胀剂的作用机理.结果表明:随着流化床锅炉灰煅烧温度的升高,CSA膨胀剂转换率也升高;水化温度与CSA膨胀剂的掺入量成正比;在干燥收缩试验中,CSA膨胀剂砂浆试件在标准养护35 d后,长度的膨胀效果可达到700×10^(-6) m;CSA膨胀剂的掺入量越高,砂浆试件的抗压强度越大.Aiming at the excessive CO 2 problem discharged from the cement industry,a green CSA expansive agent taking the industrial by-products(fluidized bed boiler ash)as the raw materials was proposed.The basic properties and mechanical properties of new CSA expansive agent were investigated.The analysis was performed according to the XRD spectra,and the action mechanism of new CSA expansive agent was investigated.The results show that with increasing the temperature of fluidized bed boiler ash(FBA),the conversion rate of CSA expansive agent also increases.The hydration temperature is in proportion to the adding content of CSA expansive agent.In the drying shrinkage experiment,the length expansion effect of CSA expansion mortar specimens can reach 700×10-6 m after the standard curing for 35 d.In addition,the higher the content of CSA expansive agent is,the greater the compressive strength of mortar specimens is.

关 键 词：绿色建材 流化床锅炉灰 膨胀剂 掺入量 抗压强度 干燥收缩 细度 水化温度 

分 类 号：TU522[建筑科学—建筑技术科学]