废弃阴极射线管玻璃对重晶石混凝土性能的影响  

Effect of Utilizing Recycled Cathode Ray Tube Glass as Aggregate in Barite Concrete

作　　者：石建军[1,2] 丁德馨[1,2] 栗建新[2] 刘华良[2] 张志恒[2] 刘权[2] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]南华大学城市建设学院,湖南衡阳421001

出　　处：《建筑材料学报》2016年第2期369-378,384,共10页Journal of Building Materials

基　　金：湖南省自然科学基金资助项目(14JJ2083);湖南省科技厅重点研发计划项目(2015JC3090)

摘　　要：将废弃的阴极射线管玻璃（CRT玻璃）磨碎后作为细、粗骨料，分别以质量分数0％，25％，50％，75％，100％取代重晶石细骨料或以质量分数0％，10％，209／6，30％取代5～10mm的重晶石粗骨料掺入重晶石混凝土中，并以粉煤灰作为矿物掺合料，研究CRT玻璃骨料对重晶石混凝土工作性能、力学性能、碱骨料反应、Pb浸出值和对7射线屏蔽能力的影响．结果表明：随着CRT玻璃骨料取代率的增加，重晶石混凝土的坍落度、Pb浸出值逐渐增大，抗压强度、劈拉强度、弹性模量、防辐射性能逐渐减小．当用CRT玻璃骨料取代质量分数为10％的5～10mm的重晶石粗骨料或25％的重晶石细骨料时，重晶石混凝土各种性能良好．Abstract~ Fly ash were used was mineral admixtures, the work performance, mechanical properties, alkali- silica reaction（ASR） expansion, lead leaching properties and T-ray shielding properties of barite concrete with ground cathode ray tube funnel glass sand fine aggregate and coarse aggregate（5 -10 mm） at mass re- placement rate of 0%, 25%, 50%, 75%, 100% and 0%, 10%, 20%, 30% were investigated. The re- sults show that the slump, lead leaching properties increase and the compressive strength, splitting tensile strength, static modulus of elasticity and γ-ray shielding properties of barite concrete decrease with the in- crease of CRT glass aggregate replacement rate. The barite concrete with ground cathode ray tube glass sand fine aggregate of 25% or coarse aggregate（5 - 10 ram） of 10% has good properties.

关 键 词：阴极射线管玻璃 重晶石混凝土 防辐射 性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]