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石墨烯氧化物对水泥砂机械性能和耐久性的影响
Lounis Djenaoucine1, Álvaro Picazo2, Miguel Ángel de la Rubia1
1Departamento de Ingeniería Civil: Construcción, E.T.S.I. Caminos, Canales y Puertos, Universidad Politécnica de Madrid, C/Profesor Aranguren 3, 28040 Madrid, Spain.
Materials (Basel, Switzerland)
|March 28, 2024
概括
石墨烯氧化物 (GO) 通过改善水分和微观结构来增强水泥复合材料. 这导致建筑应用的机械强度和耐久性显著增加.
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.
- 纳米技术 纳米技术
背景情况:
- 水泥复合材料是基本的建筑材料.
- 提高其机械性能和耐用性对于基础设施的寿命至关重要.
- 石墨烯氧化物 (GO) 是一种有前途的纳米材料,可用于水泥材料的改造.
研究的目的:
- 研究石墨烯氧化物 (GO) 对水泥复合材料的机械强度和耐久性的影响.
- 评估GO对化过程和-酸盐-酸盐 (C-S-H) 凝结构的影响.
- 为了确定最佳的GO剂量,以提高水泥材料的性能.
主要方法:
- 用GO修改的水泥砂的制备.
- 热重力测量分析 (TGA) 用于评估C-S-H含量.
- 核磁共振 (Si MAS-NMR) 用于评估水合度和C-S-H主链长度 (MCL).
- 机械强度测试 (压力和曲) 和耐久性评估.
主要成果:
- 高高的GO剂量在28天后增加了5.46%的C-S-H含量.
- 在28天后,GO的水合度提高了2.54%和MCL提高了7.01%.
- 最佳的GO剂量在28天后增加了9.02%的压力强度和21.86%的屈曲强度 (使用超塑性剂).
- 在耐久性测试中,GO显示出显著的好处,创造了一个更密集的微观结构.
结论:
- 石墨烯氧化物 (GO) 在增强水泥复合材料方面发挥着多方面的作用.
- 加入GO可以改善水合过程和水泥糊的微观结构.
- 经过GO修改的水泥复合材料具有卓越的机械性能和耐用性.
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