寿柳嫣, 温小栋, 忻超, 陆涛, 李培. 配合比参数对脱硫灰磷酸盐快速修复材料性能的影响[J]. 北京工业大学学报, 2017, 43(9): 1396-1404. DOI: 10.11936/bjutxb2016070056
    引用本文: 寿柳嫣, 温小栋, 忻超, 陆涛, 李培. 配合比参数对脱硫灰磷酸盐快速修复材料性能的影响[J]. 北京工业大学学报, 2017, 43(9): 1396-1404. DOI: 10.11936/bjutxb2016070056
    SHOU Liuyan, WEN Xiaodong, XIN Chao, LU Tao, LI Pei. Effect of Mix Proportion on the Properties of Phosphate-based Rapid Repairing Material With Desulfurized Fly-ash[J]. Journal of Beijing University of Technology, 2017, 43(9): 1396-1404. DOI: 10.11936/bjutxb2016070056
    Citation: SHOU Liuyan, WEN Xiaodong, XIN Chao, LU Tao, LI Pei. Effect of Mix Proportion on the Properties of Phosphate-based Rapid Repairing Material With Desulfurized Fly-ash[J]. Journal of Beijing University of Technology, 2017, 43(9): 1396-1404. DOI: 10.11936/bjutxb2016070056

    配合比参数对脱硫灰磷酸盐快速修复材料性能的影响

    Effect of Mix Proportion on the Properties of Phosphate-based Rapid Repairing Material With Desulfurized Fly-ash

    • 摘要: 为解决混凝土结构快速修复及脱硫粉煤灰的资源化利用,提出利用脱硫粉煤灰、凝灰岩机制砂制备磷酸盐快速修复材料(MKPC).采用单因素试验方法研究了30℃高温下配合比参数对流动性、凝结时间和力学性能的影响,结合功效系数法确定满足多项指标的优化配合比参数.试验结果表明:MKPC流动度随着碱酸比、硼砂用量、水胶比、砂胶比及脱硫灰掺量的增大,依次呈抛物线型增加、指数衰减、线性增加、指数增长及指数衰减的变化规律;凝结时间随着碱酸比的增加呈线性递减变化,随硼砂用量、水胶比及脱硫灰掺量的增加呈指数增长型变化规律;1 h力学性能随着脱硫灰掺量的增加呈线性递减变化,随硼砂用量、水胶比及脱硫灰掺量的增加呈抛物线型变化规律.优化出的MKPC体系配合比参数满足快速修复现场施工要求.

       

      Abstract: Phosphate cementitous material was considered as ideal rapid repairing materials owing to its excellent properties. However, its application was limited due to its shorter setting time and high cost. Phosphate-based rapid repairing material (MKPC) was prepared with desulfurization fly ash and tuff machine-made sand. Meanwhile the method of single-factor experimental design was adopted to study the effect of mix proportion on the properties of MKPC under high temperature conditions (30℃). The optimized mix proportion was determined by using value coefficient. The results show that the fluidity of MKPC demonstrates the parabola changes with M/P ratio, exponential decay with B/MPF ratio, linear growth with W/MPF ratio, exponential growth with S/MPF ratio, and exponential decay with CFB/MPF ratio. Secondly, the setting time of MKPC decreases linearly with the ratio of M/P, and increases with the ratio of B/MPF, W/MPF and CFB/MPF according to an exponential growth model. Thirdly, the mechanical property of MKPC about an hour declines linearly with the ratio of M/P, and improves with the ratio of B/MPF, W/MPF and CFB/MPF according to a parabola model. Finally, the optimized mix proportion is determined by using value coefficient, which meets the control range of the construction operability and early mechanical properties.

       

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