一项关于可持续低碳水泥的系统研究 - - 超级可塑剂相互作用:新鲜,机械,微观结构和耐久性特征
Ishan Bhandari1, Rajesh Kumar1, A Sofi2
1CSIR-Central Building Research Institute, Roorkee, Uttarakhand, 247 667, India.
Heliyon
|September 7, 2023
概括
这项研究探讨了与低碳水泥混合的可持续补充水泥材料 (SCM). 它研究了超级可塑剂的兼容性,检查了环境效益和绿色建筑的材料特性.
科学领域:
- 建筑材料科学 建筑材料科学
- 可持续工程 可持续工程
- 环境化学环境化学
背景情况:
- 由于环境问题,全球水泥需求的增加需要可持续的替代品.
- 补充性水泥材料 (SCM),如飞灰和地面颗粒高炉渣,可以减少碳足迹.
- 化学添加剂,特别是超级可塑剂,对于优化混合水泥性能至关重要.
研究的目的:
- 在低碳水泥中全面审查超级可塑剂与SCM的兼容性.
- 分析这些混合物对新鲜,硬化,微观结构和耐久性质的影响.
- 突出超级可塑剂的化学成分及其对水泥水化机制的影响.
主要方法:
- 对超级可塑剂-SCM相互作用现有研究的文献综述.
- 对有关新鲜和硬化的特性,微观结构和耐久性的实验数据的分析.
- 讨论各种研究中使用的超级可塑剂类型,剂量和水结合比率.
主要成果:
- 与传统波特兰水泥相比,SCM混合水泥,特别是那些含有飞灰的水泥,碳排放量明显较低.
- 超级可塑剂与SCM的兼容性影响了水分,新鲜性质和硬化性能.
- 特定的矿物添加剂与超级可塑剂相结合,可以对机械强度产生负面影响,但可以提高孔隙性和吸水能力.
结论:
- 在利用废弃SCM与超级塑化剂用于低碳水泥生产方面,存在明显的环境优势.
- 在这些材料的最佳利用方面存在挑战和研究缺口.
- 需要进一步的研究,包括对石灰石加粘土水泥 (LC3) 的统计建模,以优化混合物设计.
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