矿渣和粉煤灰对混凝土碳化的影响

"SP-221: Eighth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete" Pub Date : 2004-05-01 DOI:10.14359/13272

M. Collepardi, S. Collepardi, J. J. O. Olagot, E. Simonelli

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引用次数: 40

摘要

摘要:本文展示了在一定的水胶料比(w/cm)下，矿物添加物(粉煤灰、矿渣和石灰石)替代硅酸盐水泥对混凝土CO2渗透率的影响。结果表明，在给定的w/cm下，除了硅酸盐水泥替代量相对较低(15%)时，添加矿物的混凝土的碳化率增加。另一方面，在相同强度水平下对混凝土进行碳化率比较时，硅酸盐水泥混凝土与矿物添加量高达50%的混凝土无显著差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Influence of Slag and Fly Ash on the Carbonation of Concrete

Synopsis: The paper shows the influence of mineral additions (in form of fly ash, slag and ground limestone) replacing portland cement on the CO2 penetration rate of concretes manufactured at a given water-cementitious material ratio (w/cm). The results indicate that at a given w/cm there is an increase in the carbonation rate in concretes with mineral additions, except when the amount of portland cement replacement is relatively low (15%). On the other hand, when the comparison of the carbonation rate is made on concretes at the same strength level, there is no significant difference between concretes with portland cement and those with replacement by mineral addition up to 50%.

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"SP-221: Eighth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete"

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