造孔剂掺量对烧结保温空心砌块性能的影响  

Effect of Pore-forming Agent Content on the Performance of Sintered Insulation Hollow Blocks

作　　者：宋心[1,2] 肖慧[1,2] 权宗刚[1,2] 浮广明[2] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]西安墙体材料研究设计院,西安710061

出　　处：《硅酸盐通报》2015年第3期716-721,726,共7页Bulletin of the Chinese Ceramic Society

基　　金："十二五"国家科技支撑计划(2011BAJ04B01);节能烧结保温空心砌块关键工艺技术的优化研究(2009ZDKG-53);生活污泥制备墙体材料关键工艺技术和设备研究(201303101-5A)

摘　　要：本文针对页岩加入锯末造孔剂制备的烧结保温空心砌块进行分析研究。首先通过在实验室进行梯度配比制备烧结保温空心砌块,探索加入造孔剂对于试样物理及热工性能的影响;然后结合工厂实地生产29排孔烧结页岩保温空心砌块,测试其抗压强度及传热系数。结果表明:页岩的烧成温度范围为850~1050℃,最佳烧成温度为950℃;随着造孔剂添量的增加,试样呈抗压强度和体积密度减小、显气孔率增大的趋势。当造孔剂添加量为6%,烧成温度为950℃时,试样导热系数为0.1901 W/(m·K),相对于纯页岩制品下降了57.87%;测试工厂实地生产制品表明,29排孔加6%造孔剂页岩制品的抗压强度为11.4 MPa,符合国家标准,传热系数为0.35 W/(m2·K),满足严寒和寒冷地区的热工节能要求。The sintered insulation hollow blocks which were produced by joined sawdust pore-forming agent shale were studied in the paper. Firstly, the sintered insulation hollow blocks were manufactured through gradient ratio in the lab, and the influence of adding pore-forming agent for the physical and thermal properties was explored; then 29 row holes sintered shale insulation hollow blocks were produced in a production thctory and the compl^ssive strength and heat transfer coefficient were tested. The results show that, the sintering temperature range of shale is from 850 to 1050 ℃ and the optimum sintering temperature is 950 ℃. With the percentage of pore-forming agent increasing, the compressive strength and the bulk density is reduced, and the apparent porosity is increased gradually. When the pore-forming agent is added in an amount of 6% , the firing temperature is 950 ℃ , the thermal conductivity of the sample is 0. 1901 W/（ m · K） that fall 57.87% relative to pure shales products. Testing the factory site production products shows that, the compressive strength of 29 row holes plus 6% pore-forming agent shale products is 11.4 MPa that is in line with national standards. The heat transfer coefficient is 0.35 W/（ m2 ·K）, which satisfies the thermal energy requirement of the cold and cold regions.

关 键 词：烧结保温空心砌块 造孔剂 抗压强度 导热系数 传热系数 

分 类 号：TB33[一般工业技术—材料科学与工程]