粘土的热物理特性,用于高效的土墙施工
Cristian Petcu1, Cornelia Florentina Dobrescu1,2, Claudiu Sorin Dragomir1,3
1NIRD URBAN-INCERC Bucharest Branch, 266 Șoseaua Pantelimon, 021652 Bucharest, Romania.
Materials (Basel, Switzerland)
|September 9, 2023
概括
这项研究分析了12个压缩的粘土土样本,揭示了它们的物理和热特性适合于冲击土建筑. 与混凝土相比,冲击土墙显示出优越的水分缓冲和热调节,提高了室内舒适度和能源效率.
科学领域:
- 建筑科学 建筑科学
- 材料科学 是一种材料科学.
- 可持续建筑 可持续建筑
背景情况:
- 冲击土结构使用压缩土壤,但其热性能和防潮缓冲能力需要详细描述.
- 了解粘土土壤的热物理特性对于优化土墙设计和预测建筑性能至关重要.
研究的目的:
- 为了研究十二个压缩的粘土土样本的基本物理和热性质.
- 评估这些材料适用于冲击土墙施工的适用性及其对动态热流的影响.
- 为了比较撞击土墙与混凝土复合墙在热和湿度调节方面的性能.
主要方法:
- 使用基于沙子,泥土和粘土含量的三元图表,对十二个压缩的粘土土样本进行了表征.
- 物理性质 (密度,孔径,干燥收缩) 和热性质 (导热率,散热率,特定热容量) 的实验性评估.
- 热量和质量流通过撞击土墙的动态模拟,并在16年内与混凝土复合墙进行比较.
主要成果:
- 分析的粘土的热物理特性 (密度:1490-2150 kg/m3,孔径:23.22-39.99%,比热量:701-999 J/kgK,导热率:0.523-1.209 W/mK) 证实了它们适用于冲击土结构的适用性.
- 撞击的土墙表现出显著的水分缓冲,在5年稳定了水含量,而不是混凝土墙的持续水含量演变.
- 模拟显示,撞击土墙具有优越的温度和湿度缓冲能力,热交换量是矿物质羊毛核心复合墙的25倍.
结论:
- 压缩的粘土土壤具有有利的热物理特性,可以有效地施工土墙.
- 冲击土墙提供了大量的水分缓冲和热调节,显著提高了室内舒适度和能源效率.
- 这项研究强调了理解粘土特性对于建筑和土木工程中高效,可持续的建筑设计的重要性.
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