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首页> 外文期刊>Magazine of Concrete Research >Composite foamed alkali-activated concrete with slag and steel slag
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Composite foamed alkali-activated concrete with slag and steel slag

机译：矿渣和钢渣的复合泡沫碱活化混凝土

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摘要

Thermally expandable foaming microspheres (FMS) are used as a foaming agent in many different fields due to their excellent dimensional stability and elastic properties. In this study, lightweight thermal insulation materials were prepared by adding FMS to foamed concrete containing alkali-activated steel slag and blast-furnace slag. The dry bulk density, cube strength, thermal conductivity and drying shrinkage of samples with different compositions were investigated and their microstructure was analysed using scanning electron microscopy and X-ray diffraction. With the addition of FMS, foamed materials with a dry bulk density of 625 kg/m(3) and 40 mm cube strength of 3.6 MPa could be obtained. The 28 d drying shrinkage was 0.8 mm/m and the thermal conductivity was 0.102 W/m.K (thermal inertia index of 4.66). The results showed that FMS can be used as an organic foaming agent to prepare lightweight thermal insulation materials with improved insulation performance and mechanical properties.
机译：由于其优异的尺寸稳定性和弹性，可热膨胀的发泡微球（FMS）在许多不同的领域中用作发泡剂。在这项研究中，轻质隔热材料是通过将FMS加入含有碱活化钢渣和高炉渣的泡沫混凝土中来制备的。研究了不同组成的样品的干体积密度，立方强度，导热系数和干燥收缩率，并用扫描电子显微镜和X射线衍射分析了它们的微观结构。通过添加FMS，可以获得干堆积密度为625 kg / m（3）和40 mm立方体强度为3.6 MPa的泡沫材料。 28天的干燥收缩率为0.8mm / m，热导率为0.102W / m.K（热惯性指数为4.66）。结果表明，FMS可以用作有机发泡剂来制备具有改善的隔热性能和机械性能的轻质隔热材料。

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