砂在水泥砂中的物理和机械效应:实验和统计建模
Abdellah Douadi1, Kamel Hebbache1, Mourad Boutlikht1
1Civil Engineering Research Laboratory of Setif (LRGCS), Department of Civil Engineering, Ferhat Abbas University of Setif 1, Setif 19000, Algeria.
Materials (Basel, Switzerland)
|November 14, 2023
概括
这项研究探讨了使用精细磨砂的砂来替代砂中的水泥. 虽然增加沙子细度会增加强度,但更高的替代水平会降低机械性能并增加水的吸收.
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:
- 水泥制造带来了重大的环境挑战.
- 开发可持续的水泥替代品对于减少生态影响至关重要.
- 砂的pozzolanic特性提供了作为一个固材料的潜力.
研究的目的:
- 为了研究精细磨砂砂作为砂中部分水泥替代物的影响.
- 评估沙子细度和替代率对砂性能的影响.
- 为了评估在水泥系统中砂的pozzolanic活动.
主要方法:
- 准备和测试12种砂混合物,其砂替代比率不同 (10-40%) 和布莱恩特异性表面积 (459-543米2/公斤).
- 机械性能 (压力强度) 和物理性能 (吸水能力) 的评估.
- 热重力测量分析 (TGA) 用于确定沙子的波佐兰效应.
主要成果:
- 增加沙子细度 (459至543米2/公斤) 提高了30%的压力强度和20%的吸水能力.
- 更高的替代比率 (10%至40%) 降低了机械强度40%但增加了25%的吸水率.
- 统计分析 (ANOVA) 证实,精度和替代率对砂性能有显著的影响.
结论:
- 精细磨砂砂可以用作部分水泥替代品,但最佳性能取决于精度和替代水平.
- 需要进一步的研究来充分评估这种可持续方法的技术和环境效益.
- 优化沙子特性和替换百分比是开发环保水泥材料的关键.
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