基于评分法的冷拌超薄磨耗层混凝土优化设计
|
摘要
针对影响冷拌超薄磨耗层沥青混凝土性质的因素众多,为提高整体性能,采用了不同水性环氧掺量,油石比,水泥掺量,设计正交试验进行冷拌沥青混凝土的制备,考察了混凝土的强度、低温抗裂性能和水稳定性能三个指标,借助灰关联分析各指标在整体性能评价中所占比例,用评分的方法对不同配合比的混凝土进行优劣排序,根据分值的极差分析研究各因素对性能的影响规律。研究结果表明,水性环氧掺量对混合料的强度和低温性能影响较大,而水稳定性能受水泥用量的影响较大,不同配合比下的混凝土性质各异。最终确定冷拌超薄磨耗层沥青混凝土的最优组合为水性环氧掺量为20%,油石比为5.0%,水泥用量为5%。
There are many factors influencing the properties of cold mix asphalt concrete.in order to improve the overall performance,different waterborne epoxy dosage,different cement content and different oil and stone ratio were used.The preparation of cold mix asphalt concrete was designed by orthogonal test,three indexes of strength,low temperature crack resistance and water stability were investigated,At the same time,the proportion of each index in the overall performance evaluation was analyzed by means of grey correlation analysis,and the concrete of different proportions were ranked by the method of grading.According to the range analysis of the score,the influence of various factors on the performance is studied.The results show that the waterborne epoxy content has great influence on the strength and low temperature performance of the concrete,and the water stability are greatly influenced by the dosage of cement,different properties under different ratio of concrete.Finally,the optimal combination of water-based epoxy content is 20%,the oil and stone ratio is 5.0%,and the cement content is 5%.
There are many factors influencing the properties of cold mix asphalt concrete.in order to improve the overall performance,different waterborne epoxy dosage,different cement content and different oil and stone ratio were used.The preparation of cold mix asphalt concrete was designed by orthogonal test,three indexes of strength,low temperature crack resistance and water stability were investigated,At the same time,the proportion of each index in the overall performance evaluation was analyzed by means of grey correlation analysis,and the concrete of different proportions were ranked by the method of grading.According to the range analysis of the score,the influence of various factors on the performance is studied.The results show that the waterborne epoxy content has great influence on the strength and low temperature performance of the concrete,and the water stability are greatly influenced by the dosage of cement,different properties under different ratio of concrete.Finally,the optimal combination of water-based epoxy content is 20%,the oil and stone ratio is 5.0%,and the cement content is 5%.
引文
[1]李泉,吴超凡.环氧乳化沥青冷再生沥青混合料性能研究[J].硅酸盐通报,2017,36(1):57-63.
[2]季节,刘禄厚,索智,等.水性环氧树脂改性乳化沥青混合料性能研究[J].北京工业大学学报,2018,44(4):97-105.
[3]张勇.水性环氧乳化沥青混合料路用性能研究[J].中外公路,2017,37(5):289-293.
[4]沈凡,黄绍龙,孙政,等.水性环氧树脂-水泥-乳化沥青复合胶结体系的硬化机理[J].中南大学学报(自然科学版)2012,43(1):105-110.
[5]张庆,郝培文,白正宇.水性环氧树脂与SBR复合改性乳化沥青性能研究[J].新型建筑材料,2015,42(3):43-46.
[6]谢红跃,王滔,高达,等.无机材料对沥青-环氧树脂复合材料的性能影响[J].武汉理工大学学报,2016,38(7):14-23.
[7]邓聚龙.灰色系统基本方法(第二版)[M].武汉:华中科技大学出版社,2005.
[8]邱轶兵.试验设计与数据处理[M].合肥:中国科学技术大学出版社,2008.
[9]沈凡.水泥-乳化沥青-水性环氧复合胶结钢桥面铺装材料研究[D].武汉:武汉理工大学,2012.
[10]李红梅.基于路用性能的沥青混合料最佳油石比确定方法研究[D].西安:长安大学,2009.
[11]赵璠新,魏定邦,魏征佳,等.水泥-乳化沥青冷再生混合料水损害评价研究[J].新型建筑材料,2014,41(4):34-37.
[12]周威,赵辉,文俊,等.环氧沥青混凝土的水损坏机理研究[J].重庆交通大学学报(自然科学版),2015,34(1):54-59.
[2]季节,刘禄厚,索智,等.水性环氧树脂改性乳化沥青混合料性能研究[J].北京工业大学学报,2018,44(4):97-105.
[3]张勇.水性环氧乳化沥青混合料路用性能研究[J].中外公路,2017,37(5):289-293.
[4]沈凡,黄绍龙,孙政,等.水性环氧树脂-水泥-乳化沥青复合胶结体系的硬化机理[J].中南大学学报(自然科学版)2012,43(1):105-110.
[5]张庆,郝培文,白正宇.水性环氧树脂与SBR复合改性乳化沥青性能研究[J].新型建筑材料,2015,42(3):43-46.
[6]谢红跃,王滔,高达,等.无机材料对沥青-环氧树脂复合材料的性能影响[J].武汉理工大学学报,2016,38(7):14-23.
[7]邓聚龙.灰色系统基本方法(第二版)[M].武汉:华中科技大学出版社,2005.
[8]邱轶兵.试验设计与数据处理[M].合肥:中国科学技术大学出版社,2008.
[9]沈凡.水泥-乳化沥青-水性环氧复合胶结钢桥面铺装材料研究[D].武汉:武汉理工大学,2012.
[10]李红梅.基于路用性能的沥青混合料最佳油石比确定方法研究[D].西安:长安大学,2009.
[11]赵璠新,魏定邦,魏征佳,等.水泥-乳化沥青冷再生混合料水损害评价研究[J].新型建筑材料,2014,41(4):34-37.
[12]周威,赵辉,文俊,等.环氧沥青混凝土的水损坏机理研究[J].重庆交通大学学报(自然科学版),2015,34(1):54-59.