水性聚氨改性水泥对接混凝土石材的机械特征的影响
Jingyu Zhang1,2, Sili Chen2, Xinchao Duan2
1School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.
Materials (Basel, Switzerland)
|December 17, 2024
概括
这项研究优化了水性聚氨 (WPU) 用于寒冷地区的水泥接材料. 最好的组合增强了道建设中的动态机械性能和能量吸收.
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
- 地质技术工程 地质技术工程
背景情况:
- 道结构需要坚固的接材料,以确保安全性和稳定性,特别是在寒冷的气候.
- 现有的接材料在极端环境条件下可能缺乏最佳性能.
- 修改水泥材料是提高其性能的一个关键策略.
研究的目的:
- 为寒冷地区开发和优化水性聚氨 (WPU) 改性水泥接材料.
- 研究修改后的接材料的动态机械性能和压力强度.
- 为了确定最佳的成分和颗粒大小,以提高性能.
主要方法:
- 使用直角测试来确定用WPU修改的水泥料材料的最佳混合比率.
- 评估了动态机械性能,包括各种条件下的压力强度.
- 分割霍普金森压力棒实验进行,以评估能量吸收和利用率.
主要成果:
- 最佳的混合比率被确定为:0.5的水-水泥比率,0.05%的基甲基纤维素 (HPMC),5%的WPU和0.2%的减水剂 (WRA).
- 石颗粒的大小显著影响了动态压力强度,d5-10mm>d5-20mm>d5-30mm.
- 通过5-20毫米的石粒大小,可以获得最大的吸收能量和能量利用率.
结论:
- 修改WPU显著改善了用于寒冷地区的水泥料材料.
- 优化的接材料表现出增强的动态机械性能和能量吸收能力.
- 粒子大小优化对于在动态加载场景中最大限度地提高这些先进接材料的性能至关重要.
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