膨胀珠岩的基本特性 聚合泡混凝土与不同的补充水泥材料
Kaixing Fan1, Jie Wei2, Chengdong Feng2
1School of Architecture, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Materials (Basel, Switzerland)
|June 27, 2025
概括
这项研究表明,补充性水泥材料 (SCM) 增强了泡混凝土的性能. 甲基 (MK) 和烟 (SF) 提高了强度和热稳定性,而MK在减少水的吸收和收缩方面表现出色.
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.
- 混凝土技术 混凝土技术
背景情况:
- 泡混凝土使用轻质聚合物,但其性能可能受到限制.
- 众所周知,补充性水泥材料 (SCM) 可以改善水泥复合材料.
- 疏水改性扩展矿 (EP) 为轻质聚合物提供了潜在的潜力.
研究的目的:
- 评估SCM (烟,矿物粉,甲) 对用修改膨胀珠岩聚合物进行泡混凝土的性能的影响.
- 评估压力强度,导热率,热稳定性,吸水和收缩的改进.
主要方法:
- 常规波特兰水泥 (OPC) 被SCM (SF,MP,MK) 取代了3%,6%和9%的替代水平.
- 泡混凝土混合物中含有疏水性改性膨胀矿 (EP) 聚合物.
- 测量了包括28天压力强度,热导率,热循环下的质量损失,水吸收和收缩在内的关键材料性能.
主要成果:
- 所有测试的SCM都提高了单轴压力强度,矿物粉 (MP) 产生了最高的增加 (~97%在9%的替换).
- 添加甲 (MK) 降低了导热率,表明绝热性优越,而SF和MP略微增加了它.
- 在热循环下,SF和MK减少了质量损失,SF显示出最佳的热稳定性.
- 在减少体积水吸收和收缩方面,MK是最有效的,因为它具有波佐兰反应性和微观结构精细化.
结论:
- SCM显著提高了含有改性EP聚合物的泡混凝土的机械性能和耐久性.
- 甲 (MK) 为增强热绝缘,耐水性和尺寸稳定性提供了极好的潜力.
- 烟 (SF) 和矿物粉 (MP) 也有助于增强强度,SF提供优越的热稳定性.
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