使用从二次原材料中获得的可持续低密度玻璃聚合物的轻质砂的开发
Maximina Romero1, Isabel Padilla1, José Luis García Calvo1
1Eduardo Torroja Institute for Construction Sciences, IETcc, CSIC, 28033 Madrid, Spain.
Materials (Basel, Switzerland)
|September 28, 2023
概括
由回收玻璃和废弃物制成的轻质膨胀玻璃聚合物 (LEGAs) 显示出用于砂的有希望的机械性能. 这些可持续的聚合物为建筑应用中传统材料提供了可行的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 可持续建筑 可持续建筑
背景情况:
- 传统建筑材料有助于环境问题.
- 回收玻璃碎片和碳酸废物为可持续的聚合物生产提供了机会.
- 轻质聚合物对于降低密度和提高水泥复合材料的性能至关重要.
研究的目的:
- 调查从玻璃碎片和碳酸废物中生产轻质膨胀玻璃聚合物 (LEGAs).
- 评估LEGA微观结构和形态对水泥粘附度和砂机械性能的影响.
- 为了比较LEGA与轻型砂中常规膨胀粘土聚合物的性能.
主要方法:
- 通过热冲击工艺生产LEGA,使用玻璃碎片和各种碳酸废物.
- 用LEGAs组合的砂被制备和固化了28天.
- 分析了砂的机械性能 (柔性和压力强度) 和破裂表面微结构.
- 与使用膨胀粘土聚合物制成的砂进行比较.
主要成果:
- 使用LEGAs生产玻璃轻质聚合物砂的可行性得到证明.
- 屈曲强度在5.5到8.2MPa之间,压力强度在28.1到47.6MPa之间.
- 砂性能与LEGA微观结构有关:多孔表面 (arlite类型) 比无孔玻璃表面更好地促进接口粘合.
- 使用来自不同废物的LEGAs的迫击炮达到与标准轻质迫击炮相比的强度.
结论:
- 从回收玻璃和碳酸废物制造的LEGAs是制造高性能轻质砂的可行选择.
- 莱加的表面特征显著影响其与水泥糊的相互作用以及由此产生的机械强度.
- 这项研究突出了对聚合物生产的可持续方法,为传统材料提供了可比性能.
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