Material Design Methods for Lightweight Cement-Based Composites and Its Application
Material Design Methods for Lightweight Cement-Based Composites and Its Application
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DOI：
10.3151/jact.13.178
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发表时间：
2015-03
影响因子：
2
通讯作者：
Sukmin Kwon;T. Nishiwaki;T. Kikuta;H. Mihashi
中科院分区：
文献类型：
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作者：
Sukmin Kwon;T. Nishiwaki;T. Kikuta;H. Mihashi
本文的目的是提出一种轻质水泥基复合材料的材料设计方法，以减少建筑构件的质量并为其提供更好的隔热性能。为了实现这一目的，对一些特殊的轻质骨料进行了测试。此外，还应用了基于轻质多孔砂浆（LWPM）填充密度模型和空隙系统模型的材料设计方法。为了研究各种轻质砂浆的机械性能和导热系数，进行了一系列实验。研究发现，所采用的材料设计方法可以有效降低轻质砂浆的密度并获得足够的隔热性能。此外，某些类型的轻质砂浆也达到了足以满足所需结构性能的抗压强度。最后，结合堆积密度模型和空隙系统模型，开发了轻质隔热块（LWIB），以实现足够的承载能力和高隔热性能。
The purpose of this paper is to propose a material design method of lightweight cement-based composites that reduces the mass of building components and provides them with better insulation. To achieve this purpose, a number of special lightweight aggregates were tested. Furthermore, material design methods based on the packing density models and the void system model for lightweight porous mortar (LWPM) were applied. A series of experiments was carried out in order to investigate the mechanical properties and to examine the thermal conductivity of various types of lightweight mortar. The study identified that the adopted material design methods were effective in reducing the density of lightweight mortar and in obtaining sufficient insulation performance. Furthermore, compressive strength sufficient for required structural performance was also achieved in certain types of lightweight mortar. Finally, lightweight insulation block (LWIB) was developed by combining the packing density model and the void system model for achieving both of sufficient bearing capacity and high insulation performance.