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

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%，20%，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γ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 γ ray shielding properties of barite concrete with ground cathode ray tube funnel glass sand fine aggregate and coarse aggregate(510mm) at mass replacement rate of 0%, 25%, 50%, 75%, 100% and 0%, 10%, 20%, 30% were investigated. The results 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 increase of CRT glass aggregate replacement rate. The barite concrete with ground cathode ray tube glass sand fine aggregate of 25% or coarse aggregate(510mm) of 10% has good properties.