确保直线加速器重晶石混凝土辐射屏蔽质量的技术措施  

TECHNICAL MEASURES FOR CONTROL OF RADIATION SHIELDING QUALITY OF BARYTE CONCRETE IN LINAC EQUIPMENT ROOM

作　　者：李睿卿 刘洋洋 吴世通 许馥威 杨松山 LI Rui-qing;LIU Yang-yang;WU Shi-tong;XU Fu-wei;YANG Song-shan(China Construction Eighth Bureau Zhejiang Construction Co.,Ltd.,324000,Quzhou,Zhejiang,China)

机构地区：[1]中建八局浙江建设有限公司,浙江衢州324000

出　　处：《建筑技术》2022年第4期483-487,共5页Architecture Technology

摘　　要：衢州市某医院直线加速器机房施工中采用P·O 42.5普通硅酸盐水泥、重晶石、重晶砂、缓凝高效减水剂和洁净地下水等多种材料,设计重晶石防辐射混凝土的配合比,研究水灰比、砂率、用水量等因素对重晶石防辐射混凝土的和易性、表观密度和力学性能的影响,优化骨料级配,减缓重骨料高密度引起的分层沉降现象,归纳得出防辐射性能、施工工艺和力学性能最优良的混凝土配合比参数。Many materials were used in construction of linac equipment room in a hospital of Quzhou city, including P·O 42.5 ordinary Portland cement, baryte, set-retarder superplasticizer and clean ground water, etc. This paper designed the mixing proportion of anti-radiant baryte concrete, studied the influence of water-cement ratio, sand content and water content on the workability, apparent density and mechanical property, optimized the aggregate grading and reduced the settlement problem caused by heavy aggregate and high density. Concrete mixing parameters were concluded to realize the best antiradiation property, construction process and mechanical property.

关 键 词：重晶石 防辐射 混凝土 匀质性 

分 类 号：TU753[建筑科学—建筑技术科学]