改性磷建筑石膏防水性能研究
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摘要
以云南磷建筑石膏为主要原料,探究复合硅酸盐水泥、硬脂酸-聚乙烯醇乳液、聚羧酸、椰棕丝对磷建筑石膏防水性能的影响,采用正交试验进一步研究复合改性材料对磷建筑石膏抗压强度、抗折强度、吸水率及软化系数指标的影响,确定最佳方案。结果表明:在磷建筑石膏中掺加10%的复合硅酸盐水泥、3%的硬脂酸-聚乙烯醇乳液、1.5%的聚羧酸及0.5%的椰棕丝时,可以显著改善磷建筑石膏的防水性能,并且借助扫描电子显微镜进行微观分析,探讨复合改性磷建筑石膏的作用机理。
The effects of composite Portland cement, stearic acid polyvinyl alcohol emulsion, polycarboxylic acid and coconut palm filament on the waterproofing property of phosphogypsum of phosphorus building were investigated in Yunnan phosphorus building gypsum as the main raw material. The effect of composite modification on the compressive strength, flexural strength, water absorption and soften coefficient of phosphogypsum was further studied by orthogonal test, and the compound modified phosphorus building gypsum was determined. The best plan was determined. The test results showed that when adding 10% composite Portland cement, 3% organic waterproofing emulsion, 1.5% polycarboxylic acid and 0.5% coconut fiber, the waterproof property of phosphorus building gypsum can be significantly improved, and the mechanism of the compound modified phosphogypsum was discussed with the help of scanning electron microscope.
The effects of composite Portland cement, stearic acid polyvinyl alcohol emulsion, polycarboxylic acid and coconut palm filament on the waterproofing property of phosphogypsum of phosphorus building were investigated in Yunnan phosphorus building gypsum as the main raw material. The effect of composite modification on the compressive strength, flexural strength, water absorption and soften coefficient of phosphogypsum was further studied by orthogonal test, and the compound modified phosphorus building gypsum was determined. The best plan was determined. The test results showed that when adding 10% composite Portland cement, 3% organic waterproofing emulsion, 1.5% polycarboxylic acid and 0.5% coconut fiber, the waterproof property of phosphorus building gypsum can be significantly improved, and the mechanism of the compound modified phosphogypsum was discussed with the help of scanning electron microscope.
引文
[1] YANG J, LIU W, ZHANG L, et al. Preparation of Load-bearing Building Materialsfrom AutoclavedPhosphogypsum[J].Constructionand Building Materials, 2009, 23(2):687-693.
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[4]吴磊,赵志曼,朱伟民,等.短切玄武岩纤维对磷石膏抗折强度影响研究[J].非金属矿,2017,40(6):9-11.
[5]王青原,孙敬明,陈红鸟,等.玻璃纤维增强磷石膏复合材料力学性能研究[J].贵州大学学报(自然科学版),2017,34(4):99-103.
[6]张付奇,李刚,李洁,等.复合硅酸盐水泥改善石膏材料耐水性能研究[J].非金属矿,2016,39(2):17-19.
[7]杨磊,井敏,宋海霞.脱硫建筑石膏耐水性能研究[J].硅酸盐通报,2016,35(9):2787-2792.
[8]李国忠,高子栋,马庆宇.聚丙烯纤维和有机乳液复合改性脱硫建筑石膏[J].建筑材料学报,2010,13(4):430-434.
[9]彭家惠,张建新,陈明凤,等.石膏减水剂作用机理研究[J].硅酸盐学报,2003,31(11):1031-1036.
[10]王莹,王春红,岳鑫敏. 5种天然植物纤维的性能测试与比较[J].上海纺织科技,2016,44(3):4-6,18.
[2]阮长城,黄绪泉,刘立明,等.石膏防水性能研究现状和进展[J].化学与生物工程,2014,31(2):14-18,37.
[3]朱登玲,彭家惠,赵敏,等.不同长度聚丙烯纤维对陶瓷模具石膏抗折强度的影响研究[J].非金属矿,2014,37(3):33-35.
[4]吴磊,赵志曼,朱伟民,等.短切玄武岩纤维对磷石膏抗折强度影响研究[J].非金属矿,2017,40(6):9-11.
[5]王青原,孙敬明,陈红鸟,等.玻璃纤维增强磷石膏复合材料力学性能研究[J].贵州大学学报(自然科学版),2017,34(4):99-103.
[6]张付奇,李刚,李洁,等.复合硅酸盐水泥改善石膏材料耐水性能研究[J].非金属矿,2016,39(2):17-19.
[7]杨磊,井敏,宋海霞.脱硫建筑石膏耐水性能研究[J].硅酸盐通报,2016,35(9):2787-2792.
[8]李国忠,高子栋,马庆宇.聚丙烯纤维和有机乳液复合改性脱硫建筑石膏[J].建筑材料学报,2010,13(4):430-434.
[9]彭家惠,张建新,陈明凤,等.石膏减水剂作用机理研究[J].硅酸盐学报,2003,31(11):1031-1036.
[10]王莹,王春红,岳鑫敏. 5种天然植物纤维的性能测试与比较[J].上海纺织科技,2016,44(3):4-6,18.