高炉矿渣烧结透水砖的制备与其性能表征
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摘要
以高炉矿渣为骨料、工程渣土为结合剂、秸秆粉末为造孔剂,采用半干压法成型,制备烧结透水砖试样,研究矿渣掺量、烧结温度、保温时间和成型压力对透水砖试样性能的影响。结果表明:试样的抗折强度随着烧结温度的升高而增大;在1 175℃时试样透水系数最大,随着保温时间延长、成型压力继续增加,试样的抗折强度增大,但透水系数减小;当矿渣掺量(质量分数)为60%,成型压力为15 MPa,在1 175℃保温2 h的烧结条件下,试样的抗折强度达到11 MPa,透水系数为5.6×10-2cm/s。
Taking blast furnace slag as aggregate, engineering residue as binder and straw powder as pore making agent, specimens of sintered pervious brick were prepared with the semi-dry pressing method. The effects of slag content, sintering temperature, soaking time and molding pressure on the properties of the specimens of sintered pervious brick were studied. The results show that the bending strength of the specimen increases with the increase of the sintering temperature; the permeation coefficient of the specimen at 1 175 ℃ reaches its maximum,with the increase of soaking time and molding pressure, the bending strength of the specimen increases, but the permeability coefficient decreases accordingly; when the blast furnace slag content is 60%(mass fraction), the molding pressure is 15 MPa, the bending strength of the specimen reaches 11 MPa, and the permeation coefficient is 5.6×10-2 cm/s at 1 175 ℃.
Taking blast furnace slag as aggregate, engineering residue as binder and straw powder as pore making agent, specimens of sintered pervious brick were prepared with the semi-dry pressing method. The effects of slag content, sintering temperature, soaking time and molding pressure on the properties of the specimens of sintered pervious brick were studied. The results show that the bending strength of the specimen increases with the increase of the sintering temperature; the permeation coefficient of the specimen at 1 175 ℃ reaches its maximum,with the increase of soaking time and molding pressure, the bending strength of the specimen increases, but the permeability coefficient decreases accordingly; when the blast furnace slag content is 60%(mass fraction), the molding pressure is 15 MPa, the bending strength of the specimen reaches 11 MPa, and the permeation coefficient is 5.6×10-2 cm/s at 1 175 ℃.
引文
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[6]王萍,李国昌.沙漠沙透水砖的制备及性能研究[J].非金属矿,2010,33(5):61-63.
[7]李国昌,王萍.黄金尾矿透水砖的制备及性能研究[J].金属矿山,2006(6):78-82.
[8]张雪峰,栗阳,贾晓林,等.利用固体废弃物制备渗水砖的研究现状[J].中国陶瓷,2013(5):5-8.
[9]吴建锋,陈金桂,徐晓虹,等.利用废陶瓷制备陶瓷透水砖的研究[J].武汉理工大学学报,2009,31(19):27-30.
[10]周超群,曾令可,程小苏,等.疏浚泥透水砖制备及性能研究[J].陶瓷,2017(2):12-16.
[11]WU X,MA H,WU N,et al.Nepheline-based water-permeable bricks from coal gangue and aluminum hydroxide[J].Environmental Progress&Sustainable Energy,2016,35(3):779-785.
[12]廖奇丽,江伟辉,虞澎澎,等.工艺参数对陶瓷透水砖性能影响的研究[J].新型建筑材料,2007,34(4):29-31.
[13]陈梦婷,陈国平,石建军,等.秸秆造孔剂对页岩烧结微孔砖工艺性能的影响研究[J].施工技术,2017,46(16):129-132.
[14]王小山,屠浩驰,吴宗良,等.宁波市河道淤泥与建筑渣土建材化利用的基础研究[J].材料科学与工程学报,2011,29(2):282-285.
[15]尤润泽,王平,李辽沙.高炉渣水热法制备含铝水合硅酸钠[J].安徽工业大学学报(自然科学版),2017,34(2):115-119.
[16]陈美娅,谢宇琦,吴玉珍,等.牛粪、矿渣与污泥烧制高强陶粒研究[J].硅酸盐通报,2015,34(12):3446-3450.