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关于工程和可持续性特征的综合研究,强调3R在建筑施工中的方法
Samuvel Raj R1, G Prince Arulraj1, N Anand1
1Research Scholar, Department of Civil Engineering, Karunya Institute of Technology and Sciences, Coimbatore, India.
Heliyon
|June 27, 2024
概括
这项研究优化了可持续混凝土 (SC) 使用地面颗粒高炉渣 (GGBFS) 和飞灰 (FA),找到最佳的混合设计,以获得高压力强度和耐用性. 这项研究强调GGBFS是对SC表现最有影响力的参数.
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:
- 建筑行业面临着采用可持续实践的压力,需要开发环保的混凝土替代品.
- 传统的普通波特兰水泥 (OPC) 生产具有显著的碳足迹,推动了对补充水泥材料和替代粘合剂的研究.
- 可持续混凝土 (SC) 提供了一个有前途的途径,利用工业副产品,如飞灰 (FA) 和地面颗粒高炉渣 (GGBFS),以减少对环境的影响.
研究的目的:
- 通过系统的参数调查,优化可持续混凝土 (SC) 的机械性能,耐用性和微观结构.
- 为了评估不同的GGBFS含量,粘合剂含量,氧化 (NaOH) 度,活性剂 (AA) 比率,AA与粘合剂比率以及固化温度 (CT) 对SC性能的影响.
- 与OPC相比,评估SC的可持续性和能源效率.
主要方法:
- 使用塔古奇方法进行实验设计,以有效地探索多个参数.
- 使用灰色关系分析 (GRA),差异分析 (ANOVA) 和信号噪声比 (SNR) 进行多响应优化.
- 标志性SC属性包括新鲜密度,沉,拉伸强度 (TS),屈曲强度 (FS),弹性模量 (MOE),压力强度 (CS),干密度 (DD),冲击强度,吸水能力 (WA) 和吸附性.
主要成果:
- 地质颗粒高炉渣 (GGBFS) 显著加快地质聚合,减少定时间,增强早期的压力强度 (CS).
- 最佳的混合设计 (600公斤/立方米的粘合剂,30%的GGBFS,12M NaOH,1.5 AA比率,0.35 AA:粘合剂比率,90°C CT) 产生了优异的机械性能,CS超过40 MPa.
- 使用10%GGBFS的混合物在28天内达到30MPa以上的CS,适用于结构应用. 微观结构分析显示,在优化的混合物中,紧的C-A-S-H和N-A-S-H凝.
- 确定GGBFS含量是影响SC特性最有影响的参数.
结论:
- 优化的SC混合物表现出高的机械强度和耐久性,在特定应用中与传统混凝土相比或优于它.
- 这项研究验证了塔古奇方法和GRA在优化SC等复杂材料配方方面的有效性.
- 虽然基于某些指标,SC的可持续性得分可能低于OPC,但它提供了更好的能源效率,与3Rs (回收,再利用,减少) 原则保持一致.
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