基于三元固体废物的高强度地质聚合物混凝土的混合比例设计和碳排放评估
Mo Liu1, Wenting Dai1, Weidong Jin2
1College of Construction Engineering, Jilin University, Changchun, 130026, China.
Scientific reports
|October 24, 2024
概括
这项研究开发了没有粗聚合物的高强度地质聚合物混凝土 (HSGPC),优化了机械性能,与传统混凝土相比,减少了高达68%的碳排放. HSGPC为建筑业提供了一个可持续的替代方案.
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.
- 环境科学 环境科学
背景情况:
- 地质聚合物混凝土 (GPC) 与传统混凝土相比,具有提高机械性能和减少环境影响的潜力.
- 优化GPC混合设计对于平衡性能和可持续性至关重要.
- 现有的高强度混凝土通常具有显著的碳足迹.
研究的目的:
- 开发和优化一种没有粗聚合物的高强度地质聚合物混凝土 (HSGPC).
- 为了实现机械性能 (压力和裂纹抗拉强度) 和环境影响 (碳排放) 的双重优化.
- 为了将HSGPC的碳足迹与普通波特兰水泥混凝土 (OPC) 和其他高性能混凝土进行比较.
主要方法:
- 使用响应表面方法来优化HSGPC混合比例.
- 优化的关键参数包括飞灰含量,二氧化烟雾含量,活性剂比率和NaOH分子度.
- 评估了HSGPC的碳排放,并与普通波特兰水泥混凝土,超高性能混凝土和反应性粉末混凝土进行了比较.
主要成果:
- 最佳的HSGPC混合物包括15%的飞灰,10.30%的二氧化烟雾,2.5的活性化剂比率和10M NaOH.
- HSGPC的碳排放量比普通波特兰水泥混凝土低约30%.
- 与具有相似强度的超高性能混凝土和反应性粉末混凝土相比,HSGPC的碳排放量分别减少了59.87%和68.24%.
结论:
- 开发的没有粗料的HSGPC实现了卓越的机械性能,同时显著减少了对环境的影响.
- 优化的组合为工程应用提供了可持续和技术可行的替代方案.
- 这项研究支持在可持续建筑实践中更广泛采用地质聚合物混凝土.
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