不同C_(4)AF含量高铁低钙硅酸盐水泥性能研究  

Study on Properties of High-Iron Low-Calcium Portland Cement with Different C_(4)AF Content

作　　者：张忠飞 陈平[1,2,3,4] 赵艳荣 刘荣进[1,2,3,4] Zhang Zhongfei;Chen Ping;Zhao Yanrong;Liu Rongjin(College of Materials Science and Engineering,Guilin University of Technology,Guilin,Guangxi 541004;Guangxi Engineering and Technology Center for Utilization of Industrial Waste Residue in Building Materials,Guilin,Guangxi 541004;Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi,Guilin,Guangxi 541004;Guangxi Key Laboratory of New Energy and Building Energy Saving,Guilin,Guangxi 541004)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004 [2]广西工业废渣建材资源利用工程技术研究中心,广西桂林541004 [3]广西有色金属隐伏矿床勘查及材料开发协同创新中心,广西桂林541004 [4]广西建筑新能源与节能重点实验室,广西桂林541004

出　　处：《非金属矿》2021年第4期44-46,49,共4页Non-Metallic Mines

基　　金：广西创新驱动重大专项(2018AA23004);柳州市重点研发计划项目(2018BB20501);广西建筑新能源与节能重点实验室自主研发项目(桂科能-19-J-21-24);广西青年基金项目(2018GXNSFBA138053)。

摘　　要：以高铁低钙硅酸盐水泥为体系,制备不同铁铝酸四钙(C_(4)AF)设计含量(15%、18%、21%、24%)水泥熟料,研究水泥中不同C_(4)AF设计含量对水泥矿物形成、工作性能、力学性能、水化热等的影响。结果表明,试验烧结制备的水泥熟料矿物组成与设计基本一致。当C_(4)AF含量提高时,抗压强度较同龄期水泥有所降低,水泥水化7 d累计放热量先降低后升高,当C_(4)AF设计含量为21%时,水泥水化累计放热量最低,达到194 J/g,水泥内硅酸三钙(C3S)含量降低、C_(4)AF含量提高是水化放热量降低的主要原因。Taking high-iron low-calcium Portland cement as the system,cement clinker with different C_(4)AF design content(15%,18%,21%,24%)was prepared,and the effects of different C_(4)AF design content on cement mineral formation,working performance,mechanical properties and hydration heat were studied.The results showed that the mineral composition of cement clinker prepared by sintering experiment was basically consistent with the design.With the increase of C_(4)AF content,the compressive strength of cement was lower than cement at the same age,and the accumulated heat release of cement hydration for 7 days first decreased and then increased.When the design content of C_(4)AF was 21%,the accumulated heat release of cement hydration reached the lowest of 194 J/g.The decrease of C3S content and the increase of C_(4)AF content in cement were the main reasons for the decrease of hydration heat release.

关 键 词：高铁低钙水泥 C4AF 矿物组成 水化热 

分 类 号：TQ172.11[化学工程—水泥工业]