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首页> 外文期刊>Acta Chimica Slovenica >Influence of Various Soluble Carbonates on the Hydration of Portland Cement studied by X-ray Diffraction
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Influence of Various Soluble Carbonates on the Hydration of Portland Cement studied by X-ray Diffraction

机译:X射线衍射研究各种可溶性碳酸盐对硅酸盐水泥水化的影响

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摘要

The effect of limestone on the hydration of Portland cement has been studied by many researchers. However, a possible influence of adding more soluble carbonates was not explained. Therefore we executed a qualitative and quantitative research on the influence of slightly soluble (CaCO 3 , MgCO 3 , dolomite), medium soluble (Li 2 CO 3 ) and highly soluble (K 2 CO 3 and KHCO 3 ) carbonates on the hydration. Blending of Portland cement with differently soluble carbonates was found to influence the hydrate assemblage of the hydrated cement. With the help of the Rietveld analysis, the study indicated that the amount of reacted carbonate in cement hydration at a 15% addition of slightly or medium soluble carbonates does not exceed 5% and is not affected by their solubility; at a 15% addition of the highly soluble carbonate K 2 CO 3 the amount of reacted carbonate was around 6%. An increase in temperature (25 to 40 °C) gradually affects the rate of hydration and the quantity of stable phase assemblage.
机译:许多研究人员已经研究了石灰石对硅酸盐水泥水化的影响。但是,没有解释添加更多可溶性碳酸盐的可能影响。因此,我们对难溶的碳酸盐(CaCO 3,MgCO 3,白云石),难溶的(Li 2 CO 3)和高溶解性(K 2 CO 3和KHCO 3)碳酸盐的水化影响进行了定性和定量研究。发现波特兰水泥与不同溶解的碳酸盐的共混会影响水合水泥的水合物组合。在Rietveld分析的帮助下,研究表明,在水泥中,添加15%的中度或中等可溶性碳酸盐时,水合反应中的碳酸盐量不超过5%,并且不受其溶解度的影响。在添加15%的高可溶性碳酸盐K 2 CO 3时,反应的碳酸盐的量为约6%。温度升高(25至40°C)逐渐影响水合速率和稳定相集合的数量。

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