结合剂和激活剂成分对活性渣混凝土特性的影响
Mohamed Heshmat1, Ismail Amer2, Fareed Elgabbas2
1Structural Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt. Mohammed.Heshmat@eng.asu.edu.eg.
Scientific reports
|June 12, 2024
概括
本研究探讨了活性渣混凝土 (AASC) 混合设计,重点关注粘合剂和激活剂效应. 通过特定的混合因子和模量范围,可以实现最佳性能,包括理想的倾斜和压力强度.
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:
- 活性渣混凝土 (AASC) 是普通波特兰水泥的可持续替代品,在过去二十年中引起了大量的研究兴趣.
- 对AASC缺乏标准化的混合设计方法,这阻碍了实现一致的新鲜和硬化性质.
- 了解粘合剂和激活剂成分的影响对于优化AASC性能至关重要.
研究的目的:
- 调查影响活性渣/石灰混凝土沉降和压力强度的关键参数.
- 为了更好地了解AASC新鲜和硬化的特征的根本原因.
- 为了确定粘合剂和激活剂组合物的最佳范围,以获得理想的AASC属性.
主要方法:
- 这项研究涉及一项两阶段的实验计划,以评估AASC属性.
- 第一阶段专注于由混合因子 (HF) 和溶液模量 (Ms) 定义的各种绑定剂和激活剂组成.
- 第二阶段研究了水与粘合剂比率和粘合剂含量对落和压力强度的影响.
主要成果:
- 该研究确定了混合因子 (HF) 和溶液模量 (Ms) 的特定范围,从而产生理想的AASC特性.
- 在 Ms 1.5 的 0.6 到 0.8 的 HF 范围被发现是有效的.
- 这种最佳范围导致压力强度超过30MPa,初始下降100毫米.
结论:
- 混合因子 (HF) 和溶液模量 (Ms) 是控制AASC属性的关键参数.
- 一个定义的HF和Ms范围可以在活性/石灰混凝土中实现良好的可加工性 (沉降) 和高压力强度.
- 这项研究为开发更强大的混合设计方法论提供了有价值的见解,以实现可持续的AASC.
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