评估低飞灰基地质聚合物的性能和环境影响,与基于OPC的混凝土混凝土相比
Gangapatnam Venkata Prasanna Bhagath Singh1, Ventrapragada Durga Prasad2
1Department of Civil Engineering, SRM University-AP, Andhra Pradesh, Amaravati, India. bhagathsingh.g@srmap.edu.in.
Environmental science and pollution research international
|December 9, 2024
概括
与普通波特兰水泥 (OPC) 混凝土相比,低飞灰基地质聚合物混凝土具有更高的强度和抗化学攻击的抵抗力. 这种可持续的替代方案也大大减少了能源消耗和二氧化碳排放.
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:
- 普通波特兰水泥 (OPC) 混凝土生产是全球二氧化碳排放的主要贡献者.
- 地质聚合物混凝土利用工业副产品,如飞,提供了一个潜在的可持续替代品.
- 了解基于飞灰的地质聚合物混凝土的性能和环境影响对于其采用至关重要.
研究的目的:
- 为了比较低飞灰基地质聚合物混凝土的性能 (强度,耐用性) 与基于OPC的混凝土.
- 为了分析地质聚合物混凝土的微观结构.
- 评估地质聚合物混凝土与OPC混凝土对环境的影响,包括能源消耗和二氧化碳排放.
主要方法:
- 设计和测试两个具有不同粘合剂剂量的地质聚合物混凝土混合物.
- 通过强度测试,透度测量,硫酸盐耐受性和酸性攻击评估来评估混凝土的性能.
- 使用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 进行微结构分析.
- 执行"摇篮到门"生命周期评估 (LCA) 进行环境影响评估.
主要成果:
- 地质聚合物混凝土的压力强度比OPC混凝土高11-16% .
- 地质聚合物混凝土表现出对硫酸盐和酸性攻击的增强抵抗力,透性较低.
- 微观结构分析证实了酸凝的形成.
- 生命周期评估表明,地质聚合物混凝土的能源消耗减少了25-33%,二氧化碳排放减少了14-28%.
- 地质聚合物混凝土中的性激活剂对其能源使用和二氧化碳排放 (73-75%) 作出了重大贡献.
结论:
- 与OPC混凝土相比,低飞灰基地质聚合物混凝土的机械性能和耐用性优越.
- 地质聚合物混凝土提供了显著的环境效益,包括减少能源消耗和碳足迹.
- 虽然OPC生产具有更高的整体环境影响,但用于地聚合物混凝土的性激活剂的生产需要仔细考虑,以优化可持续性.
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