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首页> 外文期刊>Magazine of Concrete Research >Effect of different expanded aggregates on the properties of lightweight concrete
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Effect of different expanded aggregates on the properties of lightweight concrete

机译：不同膨胀骨料对轻质混凝土性能的影响

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摘要

Lightweight aggregate concrete is a material which has much lower density than normal concrete and many advantages, including advanced insulation performance due to its highly porous or cellular characteristics. Several types of lightweight aggregates have been used to produce lightweight aggregate concrete, and the characteristics of such lightweight aggregates strongly affect the material properties. In this study, three different expanded materials - expanded glass (Liaver), expanded clay (Liapor) and foam glass (Ecoglas) - were utilised as lightweight aggregates, and their effects on the properties of lightweight concrete were investigated. These expanded lightweight aggregates are light and have lower thermal conductivity as well as water absorption than those of normal aggregates. Microstructural characteristics of the specimens with different types of aggregate were examined using X-ray micro-computed tomography. The thermal (thermal conductivity) and mechanical (compressive strength) properties of the lightweight concrete specimens were evaluated experimentally and numerically. The relationship between the physical properties and characteristics was analysed to demonstrate the effect of each expanded aggregate on lightweight aggregate concrete.
机译：轻质集料混凝土是一种密度比普通混凝土低得多的材料，并具有许多优点，包括由于其高度多孔或多孔的特性而具有先进的隔热性能。几种类型的轻质骨料已经被用于生产轻质骨料混凝土，并且这种轻质骨料的特性强烈影响材料性能。在这项研究中，三种不同的膨胀材料-膨胀玻璃（Liaver），膨胀粘土（Liapor）和泡沫玻璃（Ecoglas）-被用作轻质骨料，并研究了它们对轻质混凝土性能的影响。这些膨胀的轻质骨料重量轻，比普通骨料具有较低的热导率和吸水率。使用X射线微计算机断层扫描检查具有不同聚集体类型的标本的微观结构特征。通过实验和数值评估了轻质混凝土试样的热（导热系数）和机械（抗压强度）性能。分析了物理性质与特性之间的关系，以证明每种膨胀骨料对轻质骨料混凝土的影响。

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