无机发泡充填材料试验研究
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摘要
研制了一种无机发泡充填材料,研究了不同的固相比与水固比对该充填材料性能的影响。结果表明:在同一固相比下,随着水固比的增加,充填材料流动性越好,凝结时间越长,抗压强度逐渐降低,水固比由0. 40升至0. 65,其干密度呈下降趋势;在同一水固比下,随着固相比的增加,充填材料流动性越好,凝结时间越长,抗压强度逐渐降低;该充填材料发泡起始时间在10 min左右,整个发泡过程持续约5 min,充填材料抗压强度随期龄的增加而小幅度增强;随着充填材料水固比与固相比的提高,减少了铝胶与钙矾石的生成,降低了充填材料的强度。该成果对充填材料的研究具有一定的参考价值和指导意义。
The influence of inorganic foam filling material on solid phase ratio and water-solid ratio by a large number of experiments were studied. The results show that with the water-solid ratio increasing,the compressive strength gradually decreases,the liquidity and the setting time of filling material increase under the condition of same solid phase ratio. When water-solid ratio is from 0. 40 to 0. 65,the dry density gradually decreases with the same solid phase ratio. With the solid phase ratio increaseing,the liquidity and the setting time of filling material increase,but the compressive strength gradually decreases under the condition of same water-solid ratio. The filling material starts foaming around 10 min,and the whole foaming process lasts about 5 min. The compressive strength of filling material slowly increases with the increasing of age. Additionally,the compressive strength of filling material decreases,as the reduced formation of ettringite and gel,for the improvement of the water-solid ratio and the solid phase ratio. The achievement has certain reference value and guiding significance for the experimental study on filling material.
The influence of inorganic foam filling material on solid phase ratio and water-solid ratio by a large number of experiments were studied. The results show that with the water-solid ratio increasing,the compressive strength gradually decreases,the liquidity and the setting time of filling material increase under the condition of same solid phase ratio. When water-solid ratio is from 0. 40 to 0. 65,the dry density gradually decreases with the same solid phase ratio. With the solid phase ratio increaseing,the liquidity and the setting time of filling material increase,but the compressive strength gradually decreases under the condition of same water-solid ratio. The filling material starts foaming around 10 min,and the whole foaming process lasts about 5 min. The compressive strength of filling material slowly increases with the increasing of age. Additionally,the compressive strength of filling material decreases,as the reduced formation of ettringite and gel,for the improvement of the water-solid ratio and the solid phase ratio. The achievement has certain reference value and guiding significance for the experimental study on filling material.
引文
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[2]Phan V V,王东.热电厂炉渣作为煤矿膏体充填材料的配比试验研究[J].中国安全生产科学技术,2018,14(1):49-55.
[3]易欣,康付如,邓军,等.矿用无机固化泡沫充填材料研究及应用[J].中国安全生产科学技术,2017,13(10):136-142.
[4]陈兵,张耀辉,袁印.新型无机发泡材料在高冒区充填中的应用[J].煤矿安全,2016,47(3):124-127.
[5]孟祥飞,成云海,马国庆.有机与无机材料充填冒空区的不同作用机理及工程案例[J].煤矿安全,2009,40(1):82-84.
[6]周志刚,钟东南,孙少华.喷涂聚脲发泡树脂防治漏风的应用研究[J].煤炭技术,2016,35(7):189-190.
[7]高翔.采空区顺槽马丽散锚注加固试验与应用分析[J].现代工业经济和信息化,2017,37(7):68-69.
[8]杨永祥.罗克休泡沫在煤矿防灭火中的应用[J].中国煤炭工业,2015,12(3):64-65.
[9]吴吉南,徐金海.厚煤层小煤矿采空区充填综放复采关键技术[J].煤炭科学技术,2012,40(4):30-33.
[10]黄伟,宋润权.马格尼注浆材料在高冒井巷维修加固中的应用[J].煤炭技术,2016,35(1):82-84.
[11]张耀辉.厚煤层高冒区充填技术研究[D].焦作:河南理工大学,2013.
[12]彭旭.大掺量粉煤灰混凝土性能研究[D].重庆:重庆大学,2005.
[13]Blissett R S,Rowson N A.A review of the multi-component utilisation of coal fly ash[J].Fuel,2012,97(7):1-23.
[14]熊蓉蓉,龙广成,谢友均,等.矿物掺合料对蒸养高强浆体抗压强度及孔结构的影响[J].硅酸盐学报,2017,5(2):175-181.
[15]García M.Hydration studies of calcium sulfoaluminate cements blended with fly ash[J].Cement&Concrete Research,2013,54(1):12-20.
[16]李响,石妍,李家正,等.含凝灰岩粉复合胶凝材料抗压强度发展规律[J].建筑材料学报,2017,20(3):435-438.
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