高强度氟硬石膏成分

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI:10.3846/mbmst.2019.042

G. Yakovlev, J. Kerienė, V. Grakhov, R. Drochytka, A. Gordina, A. Pichugin, K. Bazhenov, V. Troshkova

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引用次数: 1

摘要

以氢氟酸废渣氟硬石膏为原料，研究了高强度硬石膏的性能。为了激活氟酐，在组合物中加入Na3PO4磷酸钠，用量为质量的3%。利用红外光谱和x射线相分析对活化氟硬石膏的结构和性能进行了理化研究，发现硬化后复合材料的成分发生了变化，氟硬石膏的微观结构研究表明，随着强度的增加，形成了更致密的基体。注意到开发的粘结剂基质的水阻力增加。该组合物可作为石膏的廉价替代品，因其原材料的主要成本较低，也有助于改善氟硬石膏处理场的环境状况。

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High-strength fluoroanhydrite composition

The research studies the properties of a high-strength anhydrite composition based on fluoroanhydrite, a waste product of hydrofluoric acid. To activate fluoranhydrite, Na3PO4 sodium phosphate was added to the composition in an amount of 3% of the mass. The physico-chemical studies of the structure and properties of activated fluoroanhydrite conducted using infrared spectroscopy and X-ray phase analysis showed changes in the composition of the hardened composite, and the study of the fluoroanhydrite microstructure revealed the formation of a denser matrix with the increased strength. An increase in the water resistance of the developed binder matrix was noted. The composition can be used as a cheap substitute for gypsum plaster due to the low prime cost of raw materials, and also contribute to the improvement of the environmental situation in fluoroanhydrite disposal sites.

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The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019)

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