脱硫石膏基泡沫玻璃保温板的性能研究
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摘要
将泡沫玻璃边角料和玻化微珠作为轻骨料,辅以电厂原状脱硫石膏-粉煤灰-矿粉等复合胶凝材料,制备复合保温板。测试保温板的干表观密度、抗压强度、导热系数等性能指标,并通过SEM观察不同配比脱硫石膏基胶凝材料和胶凝材料-泡沫玻璃界面微观形貌。结果表明,制得保温板导热系数在0. 06～0. 09 W/(m·K)之间,抗压强度均达到0. 5 MPa以上,干表观密度在490～620 kg/m~3之间,软化系数均大于0. 8。SEM微观图像显示:免煅烧脱硫石膏-粉煤灰-矿粉三元胶凝体系水化更充分并生成较多水化硅酸钙、钙矾石等产物。
A kind of composite insulation board was prepared by using waste foam glass and glazed hollow bead as light-weight aggregate,and FGD-fly ash or FGD-fly ash-mineral powder composite as cementing material. The performances of the insulation board were tested,such as compressive strength,thermal conductivity and dry density. Micro-morphology of the cementitious materials-foam glass interface and FGD gypsum-based cementitious materials were observed by SEM. The results show that thermal conductivities of the composite insulation board range from 0. 06-0. 09 W/( m · K),the compressive strengthes can reach above 0. 5 MPa,the dry density is between 490-620 kg/m~3,having softening factor more than 0. 8. SEM photographs show that FGD gypsum-fly ash-mineral powder cementitious materials hydrate fully and generate more C-S-H and Aft.
A kind of composite insulation board was prepared by using waste foam glass and glazed hollow bead as light-weight aggregate,and FGD-fly ash or FGD-fly ash-mineral powder composite as cementing material. The performances of the insulation board were tested,such as compressive strength,thermal conductivity and dry density. Micro-morphology of the cementitious materials-foam glass interface and FGD gypsum-based cementitious materials were observed by SEM. The results show that thermal conductivities of the composite insulation board range from 0. 06-0. 09 W/( m · K),the compressive strengthes can reach above 0. 5 MPa,the dry density is between 490-620 kg/m~3,having softening factor more than 0. 8. SEM photographs show that FGD gypsum-fly ash-mineral powder cementitious materials hydrate fully and generate more C-S-H and Aft.
引文
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[15]郎营,潘钢华,周可友,等.免煅烧石膏制备空心砖的研究[J].建筑砌块与砌块建筑,2011,6(2):43-45.
[2]田英良,战梅,孙诗兵,等.国内外泡沫玻璃生产技术发展和生产线代别综述[J].玻璃和搪瓷,2014(3):26-32.
[3]顾幽燕.烟气脱硫石膏资源化利用的研究进展[J].粉煤灰,2013,25(6):33-35.
[4]雷东移,郭丽萍,孙伟.原状脱硫石膏泡沫混凝土的制备与性能研究[J].材料导报B:研究篇,2016,30(10):122-128.
[5]戴海峰,叶春锋,朱震康,等.泡沬玻璃废料保温发泡制品的性能研究[J].建筑技术开发,2017,44(7):159-160.
[6]梁建辉,熊厚仁,王其路,等.废弃泡沫玻璃自保温砌块的正交试验研究[J].混凝土与水泥制品,2011(7):58-60.
[7]李森,王跃军.废弃泡沫玻璃在屋面保温工程中的应用[J].施工技术,2013,16:64-67.
[8]薛力梨,潘钢华,刘红飞,等.泡沫玻璃免煅烧脱硫石膏板的试验研究[J].新型建筑材料,2014,41(4):8-14.
[9]薛力梨,潘钢华,刘红飞,等.脱硫石膏基泡沫玻璃保温材料成型方式研究[J].建筑技术,2016,47(10):922-924.
[10]位建强,刘巧玲,曹明莉,等.脱硫石膏-粉煤灰-矿粉复合胶结材改性研究[J].新型建筑材料,2010,4:9-12.
[11]焦宝龙,黄芳,焦宝祥,等.原状脱硫石膏-矿渣复合胶凝材料改性研究[J].扬州大学学报(自然科学版),2014,5:60-64.
[12]全国水泥制品标准化技术委员会. JC/T 2125-2012屋面保温隔热用泡沫混凝土[S].北京:中国建材工业出版社,2013:4-5.
[13]沈荣熹.新型纤维增强水泥基复合材料[M].北京:中国建材工业出版社,2004:60-62.
[14]钱晓倩.建筑工程材料[M].杭州:浙江大学出版社,2009:237-241.
[15]郎营,潘钢华,周可友,等.免煅烧石膏制备空心砖的研究[J].建筑砌块与砌块建筑,2011,6(2):43-45.