混合设计和性能研究高强度自压缩混凝土与制造砂制造的混凝土
Xuan Liu1, Xuhao Wang1, Yuan Wang1
1School of Highway, Chang'an University, Xi'an 710064, China.
Materials (Basel, Switzerland)
|January 11, 2025
概括
这项研究优化了使用工业砂制造的高强度自压缩混凝土 (SCC),发现混合物设计影响可加工性和形学,但对机械强度的影响最小. 这项研究支持在可持续建筑中使用工业砂.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
背景情况:
- 自压缩混凝土 (SCC) 研究越来越多地集中在高强度应用上.
- 高强度的SCC对于预制桥梁组件和高层建筑至关重要.
- 人工制造的沙子提供了一个可持续的替代方案,以减少自然沙子资源.
研究的目的:
- 优化高强度自压缩混凝土与制造砂 (MSH-SCC) 的混合设计.
- 调查细聚合物的替换率,砂比率和最大粗聚合物的尺寸对MSH-SCC性能的影响.
- 为MSH-SCC设计提供科学基础,并促进可持续建筑实践.
主要方法:
- 优化了各种强度级别的MSH-SCC的混合设计参数.
- 评估了细聚合物的替换率,砂比率和最大聚合物大小对可加工性,学和机械强度的影响.
- 与测量性能特征相关的混合设计变量.
主要成果:
- 优化的MSH-SCC混合设计符合目标强度水平的性能要求.
- 精细聚合物的替代率和最大聚合物尺寸显著影响了可加工性.
- 产量应力与细聚合物的替换率和最大聚合物大小正相关;在特定条件下,塑料粘度达到峰值.
- 混合设计参数对MSH-SCC的机械强度的影响有限.
结论:
- 该研究成功优化了MSH-SCC混合设计,证明了它们对高强度应用的可行性.
- 细聚合物的特点和粗聚合物的尺寸是影响MSH-SCC可加工性和质性的关键因素.
- 对机械强度的影响有限,这表明MSH-SCC的混合设计具有稳定性.
- 研究结果支持在高强度SCC中使用工业砂,有助于节约资源和低碳建筑.
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