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A platform for research: civil engineering, architecture and urbanism
Expanded delay mining hole sealing material
The invention relates to an expanded delay mining hole sealing material which is prepared after modification of an expanding agent by microcapsules. The hole sealing material is prepared by aluminum powder microcapsules, water, cement, polycarboxylate superplasticizer, water-borne epoxy resins E-51 and T31 curing agents according to certain mass percentage. The aluminum powder microcapsules are prepared by water, gelatin, sodium alginate and aluminum powder in a mass ratio of 100: 2: 2: (4-6) (wt). According to the expanded delay mining hole sealing material, ineffective expansion of earlier stage of the cement is delayed so that the cement can reach certain strength and then is expanded, and coordinating growth of material strength and expansion can be guaranteed. Final expansion rate reaches 15%-25%, one-day compressive strength is 3.2Mpa, three-day strength is 20.8Mpa, seven-day strength is 45.8Mpa, and requirements of mine gas extraction drilling sealing and strength can be met. The hole sealing material and the microcapsules can be prepared and used on site in the environment of high temperature and high humidity of a mine, toxicity is absent, and the price is low.
Expanded delay mining hole sealing material
The invention relates to an expanded delay mining hole sealing material which is prepared after modification of an expanding agent by microcapsules. The hole sealing material is prepared by aluminum powder microcapsules, water, cement, polycarboxylate superplasticizer, water-borne epoxy resins E-51 and T31 curing agents according to certain mass percentage. The aluminum powder microcapsules are prepared by water, gelatin, sodium alginate and aluminum powder in a mass ratio of 100: 2: 2: (4-6) (wt). According to the expanded delay mining hole sealing material, ineffective expansion of earlier stage of the cement is delayed so that the cement can reach certain strength and then is expanded, and coordinating growth of material strength and expansion can be guaranteed. Final expansion rate reaches 15%-25%, one-day compressive strength is 3.2Mpa, three-day strength is 20.8Mpa, seven-day strength is 45.8Mpa, and requirements of mine gas extraction drilling sealing and strength can be met. The hole sealing material and the microcapsules can be prepared and used on site in the environment of high temperature and high humidity of a mine, toxicity is absent, and the price is low.
Expanded delay mining hole sealing material
LIU JIAN (author) / LIU ZEGONG (author) / WANG XIAOTING (author) / WU HAILONG (author) / LOU YABEI (author) / GUO LINJIE (author)
2015-08-05
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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