废弃阴极射线管玻璃在混凝土中的应用研究_《混凝土与水泥制品》杂志社

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废弃阴极射线管玻璃在混凝土中的应用研究

Application Study on Waste Cathode Ray Tubes Glass in Concrete

２０14年第5期

废弃阴极射线管玻璃；掺量；性能；影响因素

Cathode ray tubes glass; Properties; Effect; Development trend

２０14年第5期

1000-4637（2014）05-80-04

湖南省自然科学基金项目（14JJ2083）

栗建新，石建军，刘华良，刘权

南华大学城市建设学院，衡阳 421001

栗建新，石建军，刘华良，刘权

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摘要：从废CRT玻璃的掺量和粒径、矿物掺合料等几个方面研究了其对混凝土的工作性能、力学性能、耐久性、金属铅浸出值的大小和防辐射性能的影响，分析了CRT废玻璃作为骨料在混凝土发展过程中存在的问题,提出了将CRT废玻璃磨细代替一部分骨料，并掺加相应的重骨料应用于自密实混凝土中的思路。 Abstract: The effects of amount and particle size of recycled CRT glass, mineral admixtures on concrete properties of working capability, mechanical, durability and leachable content of lead, radiation-proof are studied. The current problems and research gasps are analyzed. Utilizing recycled CRT glass as aggregates and with the addition of heavy aggregates in the self-compact concrete is proposed for the development of thecathode ray tube concrete.

英文名 : Application Study on Waste Cathode Ray Tubes Glass in Concrete

刊期 : ２０14年第5期

关键词 : 废弃阴极射线管玻璃；掺量；性能；影响因素

Key words : Cathode ray tubes glass; Properties; Effect; Development trend

刊期 : ２０14年第5期

DOI :

文章编号 : 1000-4637（2014）05-80-04

基金项目 : 湖南省自然科学基金项目（14JJ2083）

作者 : 栗建新，石建军，刘华良，刘权

单位 : 南华大学城市建设学院，衡阳 421001

栗建新，石建军，刘华良，刘权

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摘要

参数

结论

参考文献

引用本文

摘要：从废CRT玻璃的掺量和粒径、矿物掺合料等几个方面研究了其对混凝土的工作性能、力学性能、耐久性、金属铅浸出值的大小和防辐射性能的影响，分析了CRT废玻璃作为骨料在混凝土发展过程中存在的问题,提出了将CRT废玻璃磨细代替一部分骨料，并掺加相应的重骨料应用于自密实混凝土中的思路。

Abstract: The effects of amount and particle size of recycled CRT glass, mineral admixtures on concrete properties of working capability, mechanical, durability and leachable content of lead, radiation-proof are studied. The current problems and research gasps are analyzed. Utilizing recycled CRT glass as aggregates and with the addition of heavy aggregates in the self-compact concrete is proposed for the development of thecathode ray tube concrete.

关键词:

废弃阴极射线管玻璃；掺量；性能；影响因素

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（1）废CRT玻璃主要是作为细骨料应用于防辐射混凝土中，或者作为5~10mm的骨料掺入聚合物混凝土中。将磨细废CRT玻璃作为粗骨料掺入重混凝土中对其力学性能、防辐射性能和金属铅浸出值的大小还有待研究。由于玻璃的火山灰活性，将磨细废玻璃粉作为矿物掺合料掺入混凝土中已有研究并取得一定成果，但把废CRT玻璃粉作为矿物掺合料的研究还基本处于空白阶段。

（2）ASR反应一直是影响玻璃混凝土推广应用的重要问题。玻璃骨料的ASR反应与普通混凝土有不同之处，其产物中的碱金属大部分来自玻璃骨料而非水泥。对于抑制CRT废玻璃混凝土的碱骨料反应，可借鉴玻璃混凝土在这方面取得的成果，从锂化合物、矿物掺合料等方面进行试验研究。

（3）CRT废玻璃颗粒是一种活性材料，也是一种火山灰材料，掺入混凝土中同时发生碱骨料反应和火山灰反应，这两种反应作用效果截然相反。文献[24]等借助扫描电子显微镜（SEM）和X射线能谱分析法（EDS）等手段分析普通玻璃混凝土发现，玻璃骨料内部裂隙之间发生的是碱骨料反应，而在玻璃骨料与浆体之间的过渡区域中发生的则是火山灰反应，两者同时并存。CRT废玻璃混凝土研究中可将二者联合，从细观角度分析其作用机理。

（4）铅浸出值大小是CRT废玻璃混凝土必须要考虑的问题。粉煤灰和磨细矿渣可减少铅的析出，其他矿物掺合料对CRT废玻璃混凝土铅浸出值的影响还有待研究。如何找到一种矿物掺合料使其即能有效减少碱骨料反应，又能很好控制铅的浸出是以后CRT废玻璃混凝土研究需要考虑的问题。

（5）废CRT玻璃含铅、钡量高，使得CRT废玻璃混凝土具有比普通混凝土更高的防辐射性能。目前，对于CRT废玻璃混凝土的防辐射研究主要是针对X射线，而对于γ射线和中子射线的研究没有相关报道。CRT废玻璃取代率、玻璃粒径、矿物掺合料和外加剂对CRT防辐射混凝土屏蔽效果的影响及其变化规律还需进一步研究。

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