硼/磷复合掺杂对高硫型贝利特硫铝酸盐熟料形成与性能的影响  

Effect of Boron/Phosphorus Compound Doping on Formation and Properties of Sulfate-Rich Belite Sulfoaluminate Clinker

作　　者：张文生 安楠 张洪滔 任雪红 叶家元 刘垒 曹立学 钱觉时[2] ZHANG Wensheng;AN Nan;ZHANG Hongtao;REN Xuehong;YE Jiayuan;LIU Lei;CAO Lixue;QIAN Jueshi(State Key Laboratory of Green Building Materials,China Building Materials Academy,Beijing 100024,China;College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China)

机构地区：[1]中国建筑材料科学研究总院有限公司,绿色建筑材料国家重点实验室,北京100024 [2]重庆大学材料科学与工程学院,重庆400045

出　　处：《硅酸盐学报》2023年第11期2741-2749,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金重点项目(51832006);中国建材集团攻关专项资助项目(2021HX0304)。

摘　　要：高硫型贝利特硫铝酸盐水泥在海洋工程快速施工具有显著的优势,但是该水泥熟料后期强度发展不足。采用硼/磷复合掺杂的方法开展了提高后期强度的研究,并采用X射线衍射结合Rietveld全谱定量分析、扫描电镜、等温量热及热重分析等测试方法,研究了硼/磷复合掺杂对高硫型贝利特硫铝酸盐水泥熟料矿物形成、微观结构及水化等的影响。研究表明:硼、磷2种元素均能固溶到硅酸二钙的晶体结构中,形成结构缺陷,提高熟料中α-C_(2)S含量,同时提高c-C_(4)A_(3)$的含量,促进了熟料早期的水化和后期强度的发展。Sulfate-rich belite sulfoaluminate cement is used in rapid construction of marine engineering,but the strength of the clinker developed is not enough in the later period.The improvement of the strength in the later stage was investigated via boron/phosphorus composite doping.The effect of boron/phosphorus composite doping on the mineral formation,microstructure,and hydration of high sulfur belite aluminate clinker was analyzed by X-ray diffraction combined with Rietveld full spectrum quantitative analysis,scanning electron microscopy,isothermal calorimetry and thermogravimetric analysis.The results show that boron and phosphorus both can exist in the crystal structure of dicalcium silicate,form the crystal defects,and increase the content ofα-C_(2)S and c-C_(4)A_(3)$,thus promoting the early hydration and later strength development of the clinker.

关 键 词：高硫型贝利特硫铝酸盐水泥熟料 硼酸 磷酸钙 强度 

分 类 号：TQ172.11[化学工程—水泥工业]