煅烧伊利石-绿泥石页岩对水泥水化产物的影响  

Effect of Calcined Illite-Chlorite Shale on the Hydrates of Cement

作　　者：杜永康 宋强[2] 陈延信[2] 程福安[2] 唐鑫 孙嘉霖 杜佳怡 Du Yongkang;Song Qiang;Chen Yanxin;Cheng Fuan;Tang Xin;Sun Jialin;Du Jiayi(Shaanxi Building Materials Technology Group Co.,Ltd.,Xi’an,Shaanxi 710018;College of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055)

机构地区：[1]陕西建材科技集团股份有限公司,陕西西安710018 [2]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《非金属矿》2023年第4期41-45,49,共6页Non-Metallic Mines

基　　金：陕西省科学技术研究计划(2022KXJ-008,2021TD-53,2022GY-418);陕西省教育厅重点研发计划(20JY040);榆林市科技计划项目(CXY-2020-057)。

摘　　要：为探索煅烧伊利石-绿泥石页岩用作辅助胶凝材料的水化活性,通过X射线衍射(XRD)、傅里叶红外光谱(FTIR)等测试手段分析了在700℃下煅烧不同时间伊利石-绿泥石矿物组成变化,以及对水泥水化产物的影响。结果表明,700℃煅烧后绿泥石结构发生破坏,转变为无定型SiO_(2)和Al_(2)O_(3),伊利石/云母层状结构塌陷。伊利石-绿泥石页岩煅烧后,硅氧四面体聚合度增加。在水泥碱性环境中,煅烧伊利石-绿泥石页岩中的Si和Al更容易析出,促进了单硫型水化硫铝酸钙(AFm)的形成,改变了水泥水化产物水化硅酸钙(C-S-H)结构,凝胶钙硅比更低,链长更长。煅烧伊利石-绿泥石页岩可用作辅助胶凝材料。In order to explore the hydration activity of calcined illite-chlorite shale as supplementary cementitions materials,the mineral composition change of illite-chlorite shale calcined at 700℃at different time and its influence on cement hydration products were analyzed by means of XRD,FTIR and other testing methods.The results show that after calcination at 700℃,the structure of chlorite is destroyed and transformed into amorphous SiO_(2) and Al_(2)O_(3),and the illite/mica layered structure collapses and being disordered.The degree of polymerization of silica tetrahedron increases after calcination of illite-chlorite shale.In the alkaline environment of cement,Si and Al in the calcined illite chlorite shale are easier to dissolution,which promotes the formation of AFm,the cement hydration product C-S-H structure is changed,the gel Ca/Si is lower,and the chain length is longer.Illite-chlorite shale calcined can be used as supplementary cementitious materials.

关 键 词：水泥混合材 烧页岩 伊利石 绿泥石 水化产物 

分 类 号：TU528.042[建筑科学—建筑技术科学]