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Sleeve grouting material composition for iron tailing sand steel bar connection as well as preparation and application thereof
The invention relates to a sleeve grouting material composition for iron tailing sand steel bar connection, and preparation and application of the grouting material. The grouting material compositioncomprises cement, continuously graded iron tailing sand and optional desulfurized gypsum powder; quartz sand is replaced by the continuously graded iron tailing sand; the problems that the fluidity ofa traditional grouting material does not reach the national standard, the loss is fast, the early vertical expansion rate does not reach the standard, the early strength and the later strength are not high (do not reach the standard), and the later volume stability is poor are effectively solved, a large amount of bulk solid waste is used in the true sense, and good economic benefits and social benefits are achieved.
本发明涉及一种铁尾矿砂钢筋连接用套筒灌浆料组合物、灌浆料制备及其应用，所述灌浆料组合物包括水泥和连续级配铁尾矿砂以及任选的脱硫石膏粉，采用连续级配铁尾矿砂取代了石英砂，有效克服了传统灌浆材料存在流动度不达国家标准、损失快、早期竖向膨胀率不达标、早期及后期强度不高(不达标)、后期体积稳定性差的问题，并且真正意义上使用了大量的大宗固废，具有很好的经济效益和社会效益。
Sleeve grouting material composition for iron tailing sand steel bar connection as well as preparation and application thereof
The invention relates to a sleeve grouting material composition for iron tailing sand steel bar connection, and preparation and application of the grouting material. The grouting material compositioncomprises cement, continuously graded iron tailing sand and optional desulfurized gypsum powder; quartz sand is replaced by the continuously graded iron tailing sand; the problems that the fluidity ofa traditional grouting material does not reach the national standard, the loss is fast, the early vertical expansion rate does not reach the standard, the early strength and the later strength are not high (do not reach the standard), and the later volume stability is poor are effectively solved, a large amount of bulk solid waste is used in the true sense, and good economic benefits and social benefits are achieved.
本发明涉及一种铁尾矿砂钢筋连接用套筒灌浆料组合物、灌浆料制备及其应用，所述灌浆料组合物包括水泥和连续级配铁尾矿砂以及任选的脱硫石膏粉，采用连续级配铁尾矿砂取代了石英砂，有效克服了传统灌浆材料存在流动度不达国家标准、损失快、早期竖向膨胀率不达标、早期及后期强度不高(不达标)、后期体积稳定性差的问题，并且真正意义上使用了大量的大宗固废，具有很好的经济效益和社会效益。
Sleeve grouting material composition for iron tailing sand steel bar connection as well as preparation and application thereof
一种铁尾矿砂钢筋连接用套筒灌浆料组合物及制备与应用
WANG DONGMIN (author) / BAI YAFEI (author) / ZHANG SHUANGCHENG (author) / SUN RUI (author) / WANG HUANGQI (author) / LIU ZE (author) / LYU NAN (author) / GENG DANHUA (author)
2020-08-11
Patent
Electronic Resource
Chinese
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