阿利特-硫铝酸盐水泥熟料的气固反应制备及水化性能  

Hydration properties of alite-ye'elimite cement clinker prepared by gas-solid reaction

作　　者：葛大顺 李伟峰[1] 胡月阳[1] 于锦[1] 马素花[1] 沈晓冬[1] 

机构地区：[1]南京工业大学材料科学与工程学院材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2017年第2期23-30,共8页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学青年基金(51202109);国家高技术研究发展计划(863计划)(2015AA034701);建筑材料行业科技创新计划(2015-M3-2);江苏高校优势学科建设工程

摘　　要：采用气固反应法制备了阿利特-硫铝酸盐体系水泥熟料。利用X线衍射仪(XRD)、水化量热仪、压汞法(MIP)等技术分析了SO_2气体流量和煅烧温度对水泥熟料矿物组成的影响,以及该体系的水化性能和浆体结构。结果表明:硅酸盐水泥熟料中可引入3CaO·3Al_2O_3·CaSO_4(C_4A_3$)矿物,实现3CaO·SiO_2(C_3S)和C_4A_3$的共存。在SO_2流量为40 mL/min、温度为1 250℃条件下处理硅酸盐水泥熟料30 min可制备C_3S含量52.61%和C_4A_3$含量2.13%共存的阿利特-硫铝酸盐体系水泥熟料。阿利特-硫铝酸盐体系水泥由于C_4A_3$的存在,凝结时间和水化诱导期较硅酸盐水泥短,早期的孔隙率和早期强度均优于硅酸盐水泥。Method of gas-solid reaction was selected to prepare alite-ye＇ elimite cement clinker.X-ray diffraction（ XRD）,isothermal calorimetry and mercury intrusion porosimetry（ MIP） were used to study the influence of SO_2 and temperature on phase composition of clinker,hydration performance and structure of the cement.Results showed that 3CaO·3Al2O3·CaSO4（ C4A3$） could be introduced into Portland cement clinker to realize the coexistence of C4A3$ and alite.52.61% 3CaO·SiO2（ C3S） coexisted with2.13% C4A3$ in alite-ye＇elimite clinker could be obtained with 40 mL/min SO2 gas flow at 1 250 ℃ for30 min.As the existence of C4A3$,the induction period of hydration and setting time for alite-ye＇elimite cement was shorter than that for Portland cement,and the total porosity and the strength of alite-ye＇elimite cementim proved greatly compared with Portland cement at the early age.

关 键 词：阿利特-硫铝酸盐水泥熟料 气固反应 SO2 水化性能 

分 类 号：TU528.042[建筑科学—建筑技术科学]