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首页> 外文期刊>Materials Characterization >The influence of blast-furnace slag hydration products on microcracking of concrete
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The influence of blast-furnace slag hydration products on microcracking of concrete

机译：高炉矿渣水合产物对混凝土微裂纹的影响

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摘要

New hydration products of ground granulated blast-furnace slag are formed during the hydration process of Portland slag cement concrete. Spatial distribution of microcracks in concrete is related also to newly formed slag hydrates. The chemical composition of hydration products is variable and unstable. The Si/Ca ratios rise in hydration products near the unhydrated slag core significantly. There is also a certain increase of Mg and Al content in the central parts of hydration rims. The scope of the paper is to find a relation between slag hydration products and the process of microcracking. The amount of microcracks was reduced in concretes with a lower content of vitreous fraction where the slag basicity was high. Neoformation of hydration products is accompanied by volume changes, which can lead to concrete microcracking.
机译：在硅酸盐矿渣水泥混凝土的水化过程中，形成了颗粒状高炉矿渣的新水化产物。混凝土中微裂纹的空间分布也与新形成的矿渣水合物有关。水合产物的化学组成是可变的和不稳定的。在未水化炉渣芯附近的水合产物中，Si / Ca比值明显升高。在水合边缘的中央部分，镁和铝的含量也有一定的增加。本文的范围是寻找矿渣水合产物与微裂纹过程之间的关系。玻璃渣含量较低的混凝土中，矿渣碱度较高，从而减少了微裂纹的数量。水合产物的新形成伴随着体积变化，这可能导致混凝土微裂纹。

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