含3MgO·B_(2)O_(3)硫铝酸盐水泥熟料制备及其对中子屏蔽性能研究  

Preparation and neutron shielding performance of sulphoaluminate cement clinker contained 3MgO·B_(2)O_(3)

作　　者：田键[1,2,3,4,5] 操未青 胡攀 王明焱 朱艳超 胡唐辉[1,2,3] 岳光永 TIAN Jian(School of Materials Science and Engineering,Hubei University,Wuhan 430062,Hubei,China)

机构地区：[1]湖北大学材料科学与工程学院,湖北武汉430062 [2]功能材料绿色制备与应用教育部重点实验室,湖北武汉430062 [3]工业废弃物绿色产业化应用技术湖北省工程研究中心,湖北武汉430062 [4]玉林师范学院碳酸钙产业发展研究院,广西玉林537000 [5]湖北湖大天沭新能源材料工业研究设计院有限公司,湖北武汉430062 [6]武汉盛大长青建材有限公司,湖北武汉430000

出　　处：《水泥》2022年第2期10-16,共7页Cement

基　　金：国家自然科学基金项目(21571056);广西创新驱动发展专项(2018AA21013);湖北大学青年科学基金(201911304000001)。

摘　　要：防辐射混凝土是保证核能安全利用的关键因素之一,目前用于核电站的防辐射水泥以硼水泥、钡水泥和锶水泥为主。应用广泛的硼水泥一般采用外掺含硼氧化物或矿物后,经粉磨均匀制成,其普遍存在容重大,易离析、开裂,性能不稳定等缺陷,导致使用过程存在较大的安全隐患。为克服传统硼水泥存在的问题,本文将具有中子屏蔽作用的硼元素引入硫铝酸盐水泥生料体系中,烧成含有结构稳定的3MgO·B_(2)O_(3)矿物的硫铝酸盐水泥熟料。当熟料中理论3MgO·B_(2)O_(3)含量为7.5%时,制备的熟料28 d胶砂抗压强度为52.07 MPa,厚度为20 mm球形空腔样品,其中子屏蔽率为17.0%。Radiation-proof concrete is one of the key factors to ensure the safe utilization of nuclear energy.Boron cement,barium cement and strontium cement are the main radiation-proof cement used in nuclear power plants.The widely used boron cement is generally made by mixing boron oxides or minerals and grinding evenly.It generally has many defects,such as heavy capacity,easy segregation,cracking and unstable performance,which lead to great safety hidden danger in the process of use.In order to overcome the problems of traditional boron cement,in this paper,boron element with neutron shielding fimction was introduced into sulphoaluminate cement raw material system,and the sulphoaluminate cement clinker containing 3Mg0·B_(2)O_(3) mineral with stable structure was fired.When the theoretical content of 3MgO·B_(2)O_(3) in the clinker is 7.5%,the clinker prepared through the standard mortar test has a 28 d compressive strength of 52.07 MPa and the neutron shielding rate of the 20 mm spherical cavity sample is 17.0%.

关 键 词：防辐射水泥 熟料 硼 中子屏蔽 

分 类 号：TQ172.7[化学工程—水泥工业]