含弱有机酸碱性硫酸镁水泥的耐水性研究

IF 1.3 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advances in Cement Research Pub Date : 2023-04-27 DOI:10.1680/jadcr.22.00192

Xun Xu, Bei Zhu, Tiancheng Lin, Yingjiang Li, Yongtao Sun, B. Yu, Hai-long Hu, Zong-Hai Hu, Qian Dong

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引用次数: 1

摘要

由于硫酸镁水泥具有强度弱、耐水性能差的特点，因此在碱式硫酸镁水泥(BMSC)的制备中，添加剂是必不可少的。本文研究了三种有机酸对BMSC抗弯强度耐水性能的影响及其机理。结果表明，苹果酸对混凝土抗弯强度的改善效果不明显，柠檬酸和酒石酸的改善效果较好。不同弱有机酸的电离常数和分子式会影响其流动性、强度和耐水性等性能。因此，柠檬酸的效果优于酒石酸，柠檬酸的最佳添加量为1.0%。

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Investigation on water-resistance of basic magnesium sulfate cement containing weak organic acids

As magnesium oxysulphate cement featured feeble strength and water-resistance, the additive was essential for preparing basic magnesium sulfate cement (BMSC). In this paper, the effects and the mechanism of three organic weak acids on the water-resistance for the flexural strength of BMSC were investigated. The results showed that malic acid failed to ameliorate the water-resistance for the flexural strength, but citric acid and tartaric acid succeeded. The ionization constant and molecular formulas of different weak organic acids would affect the performance, such as the fluidity, strength as well as water-resistance. Therefore, the effect of citric acid was better than tartaric acid, and the optimal dosage of citric acid was 1.0%.

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来源期刊

Advances in Cement Research 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

审稿时长

3.2 months

期刊介绍： Advances in Cement Research highlights the scientific ideas and innovations within the cutting-edge cement manufacture industry. It is a global journal with a scope encompassing cement manufacture and materials, properties and durability of cementitious materials and systems, hydration, interaction of cement with other materials, analysis and testing, special cements and applications.