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Early-strength high-temperature-resistant sleeve grouting material and preparation method thereof
The invention discloses an early-strength high-temperature-resistant sleeve grouting material and a preparation method thereof. The grouting material is prepared from, by mass, 600-900 parts of composite cement, 120-180 parts of anhydrous phosphogypsum, 72-108 parts of superfine mineral powder, 720-1080 parts of quartz sand, 5-7 parts of a water reducing agent, 1-3 parts of a defoaming agent, 1-3 parts of an expanding agent and 220-330 parts of water; the composite cement is formed by mixing Portland cement and high-alumina cement according to the mass ratio of 1: (2-2.5); and the quartz sand comprises quartz sand with the particle size ranging from 0.2 mm to 2 mm and quartz sand with the particle size not larger than 0.2 mm, and the mass ratio of the quartz sand with the two particle sizes is 1: 1. The grouting material provided by the invention has good early strength, fluidity, high strength and excellent high temperature resistance, does not generate dry microcracks at high temperature, does not have the problem of obvious later strength shrinkage, and can still reach a residual strength ratio close to 0.8 after 800 DEG C.
本发明公开了一种早强型耐高温套筒灌浆材料及其制备方法，按质量份计，该灌浆材料的原材料包含复合水泥600～900份，无水磷石膏120～180份，超细矿粉72～108份，石英砂720～1080份，减水剂5～7份，消泡剂1～3份，膨胀剂1～3份，水220～330份；复合水泥由硅酸盐水泥和高铝水泥按1:(2～2.5)质量比混合；石英砂包括粒径在0.2mm～2mm范围的石英砂和粒径不大于0.2mm的石英砂，两种粒径石英砂质量比为1:1。本发明灌浆材料具有良好的早强性、流动性、强度高，且具有优良的耐高温型，在高温下不产生干缩微裂缝，也无明显后期强度倒缩的问题，800℃后残余强度比仍可达到接近0.8。
Early-strength high-temperature-resistant sleeve grouting material and preparation method thereof
The invention discloses an early-strength high-temperature-resistant sleeve grouting material and a preparation method thereof. The grouting material is prepared from, by mass, 600-900 parts of composite cement, 120-180 parts of anhydrous phosphogypsum, 72-108 parts of superfine mineral powder, 720-1080 parts of quartz sand, 5-7 parts of a water reducing agent, 1-3 parts of a defoaming agent, 1-3 parts of an expanding agent and 220-330 parts of water; the composite cement is formed by mixing Portland cement and high-alumina cement according to the mass ratio of 1: (2-2.5); and the quartz sand comprises quartz sand with the particle size ranging from 0.2 mm to 2 mm and quartz sand with the particle size not larger than 0.2 mm, and the mass ratio of the quartz sand with the two particle sizes is 1: 1. The grouting material provided by the invention has good early strength, fluidity, high strength and excellent high temperature resistance, does not generate dry microcracks at high temperature, does not have the problem of obvious later strength shrinkage, and can still reach a residual strength ratio close to 0.8 after 800 DEG C.
本发明公开了一种早强型耐高温套筒灌浆材料及其制备方法，按质量份计，该灌浆材料的原材料包含复合水泥600～900份，无水磷石膏120～180份，超细矿粉72～108份，石英砂720～1080份，减水剂5～7份，消泡剂1～3份，膨胀剂1～3份，水220～330份；复合水泥由硅酸盐水泥和高铝水泥按1:(2～2.5)质量比混合；石英砂包括粒径在0.2mm～2mm范围的石英砂和粒径不大于0.2mm的石英砂，两种粒径石英砂质量比为1:1。本发明灌浆材料具有良好的早强性、流动性、强度高，且具有优良的耐高温型，在高温下不产生干缩微裂缝，也无明显后期强度倒缩的问题，800℃后残余强度比仍可达到接近0.8。
Early-strength high-temperature-resistant sleeve grouting material and preparation method thereof
一种早强型耐高温套筒灌浆材料及其制备方法
LI YUBO (author) / LEI WUYI (author) / SU YING (author) / HE XINGYANG (author) / ZHANG QUANGANG (author) / FANG JIAOLIN (author) / ZHANG LUCHUAN (author) / CHENG LU (author) / YANG QIFAN (author) / YANG JIN (author)
2021-05-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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