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- W3189468644 abstract "Gas drainage is an important method to prevent and control gas disasters. Sealing materials have an important impact on the gas drainage effect. To improve the extraction rate, the configuration and related characteristics of sealing materials were studied in this study. It was found that the fluidity increased gradually with the increase of the dosage of the suspension concentrate (SC). The water–cement ratio was directly proportional to the setting time of the slurry. Also, the mixing amount of the special cement was inversely proportional to the setting time of the slurry. The influence of the amount of foaming agent, special cement, and suspending agent on the expansion rate of the slurry was positive, and the influence gradually weakened. When the water–cement ratio of cement-based materials was 0.6, the special cement content percentage was 6, the suspension agent content percentage was 3, the plasticizer content percentage was 0.7, the early strength agent content percentage was 1.2, and the foaming agent content percentage was 0.2, the sealing effect was the best. The research results suggest that the porosity and pore length of the cement-based material are smaller than those of polyurethane, and its sealing property was better. This could further increase the sealing effect of the gas borehole, thereby facilitating gas extraction." @default.
- W3189468644 created "2021-08-16" @default.
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- W3189468644 date "2021-08-03" @default.
- W3189468644 modified "2023-09-25" @default.
- W3189468644 title "Experimental Study on the Cement-Based Materials Used in Coal Mine Gas Extraction for Hole Sealing" @default.
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- W3189468644 doi "https://doi.org/10.1021/acsomega.1c02911" @default.
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