Fly ash geopolymers are a relatively new class of binders with the potential to reduce the CO2 emissions associated with Portland cement based construction materials. This paper reports on the organic acid resistance of fly ash geopolymers following exposure to acetic and lactic acid. Organic acids are prevalent in many circumstances including agriculture, production processes and waste management. These findings demonstrate that the surface of fly ash geopolymers had superior resistance to organic acids when compared with traditional Portland cement, evidenced by smaller mass losses. This was attributed to the formation of reaction products which were less susceptible to acid attack than those formed in Portland cement systems due to their lower calcium content. However, despite the surface of fly ash geopolymers appearing less deteriorated due to organic acid attack, they were found to have a higher porosity than their Portland cement counterparts making them more susceptible to acid ingress.

中文翻译：

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粉煤灰地质聚合物粘合剂对有机酸的抵抗力

粉煤灰地质聚合物是一类相对较新的粘合剂，具有减少与波特兰水泥基建筑材料相关的二氧化碳排放量的潜力。本文报告了粉煤灰地质聚合物在暴露于醋酸和乳酸后的耐有机酸性。有机酸在许多情况下都很普遍，包括农业、生产过程和废物管理。这些发现表明，与传统的波特兰水泥相比，粉煤灰地质聚合物的表面对有机酸具有更好的抵抗力，这可以通过较小的质量损失来证明。这归因于反应产物的形成，由于它们的钙含量较低，因此比在波特兰水泥系统中形成的反应产物更不易受酸侵蚀。然而，