无机盐对砖粉泡沫混凝土性能影响的研究  

Research on the effects of inorganic salts on the brick powder foam concrete performance

作　　者：乔禺森 刘香[1] 董素芬[1] 王卫仑[2] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [2]深圳大学广东省滨海土木工程耐久性重点实验室,广东深圳518060

出　　处：《混凝土》2014年第9期142-144,共3页Concrete

基　　金：广东省滨海土木工程耐久性重点实验室开放基金(GDDCE12-08)

摘　　要：砖粉泡沫混凝土作为无机不燃保温材料既可利废又能达到建筑节能的要求,具有良好的应用前景和研究价值。因其胶凝材料体系的特殊性,为保证其强度和体积稳定性,需加入起到早强和速凝作用的无机盐。通过研究Li2CO3、CaCl2、MgSO4和Na2CO3掺入对砖粉泡沫混凝土干密度、强度、含水率及吸水率的影响,试验表明:CaCl2无明显影响效果;MgSO4使干密度增大较多;Li2CO3是较CaCl2和MgSO4性能优良的无机盐;Na2CO3掺量为0.3%时砖粉泡沫混凝土的干密度为680kg/m3,抗压强度3.8 MPa,吸水率为49%,含水率为14%。Brick Powder Foam Concrete not only can use waste but also can be used as an inorganic non-inflammable material for insu lating,achieving the building energy-saving requirement,which has good application prospect and research value.Because of binding material system specialty,it needs add the inorganic salts which have the early strength and quick setting effects to ensure its strength and volume stability.Through researching Li2CO3,CaCl2,MgSO4 and Na2CO3that affect brick powder foam concrete dry density,strength,moisture content and water absorption,experimental results show that,CaCl2 has no obvious effect;MgSO4makes the dry density increase more;Li2CO3is the better inorganic salt which has the excellent performance comparing to MgSO4 and CaCl2;when the content of Na2CO3 is 0.3%,brick powder foam concrete density is 680 kg/m^3,compressive strength is 3.8 MPa,water absorption rate is 49% and the moisture content is 14%.

关 键 词：砖粉泡沫混凝土 无机盐 抗压强度 吸水率 

分 类 号：TU528.041[建筑科学—建筑技术科学]