烧页岩作为水泥混合材的研究  

Study on Calcined Shale as Cement Admixture

作　　者：苗琛[1] 冯春花[1] 李东旭[1] 

机构地区：[1]南京工业大学材料学院,南京210009

出　　处：《硅酸盐通报》2010年第6期1397-1401,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB623104)

摘　　要：利用差热分析法对页岩的煅烧温度进行了初步确定,测定了几种烧页岩的活性,并对页岩在不同温度下进行煅烧以使其活性得到激发,利用XRD、SEM等测试方法对掺加页岩的水泥水化后的微观形貌以及矿物组成进行了研究。结果表明:试验所用页岩适合的煅烧温度为800℃左右,其活性主要来源于页岩中的粘土质矿物在煅烧时的热分解过程中产生的活性氧化硅和氧化铝;800℃煅烧30 m in后的烧页岩与粉煤灰双掺掺入总量为30%时,可满足P.C42.5水泥的生产。The temperatures of calcined shale are determined by differential scanning calorimetry（DSC）.The pozzolanic activity of different calcined shales are investigated by the means of pozzolanic activiy test.Through XRD and SEM analyses,it is concluded that the cementitious activity of the calcined shales depend on the heat decomposition of shales.The results show that,the shales have high pozzolanic activity at calcined temperture 800 ℃.The addition of 30wt% ash fly and shale which are calcined 30 minutes in the temperture 800 ℃ can product P.C 42.5 cement.

关 键 词：烧页岩 水泥混合材 火山灰活性 复合水泥 

分 类 号：TQ172.7[化学工程—水泥工业]