水泥路面改性环氧磨耗层骨料形状特征分析与评价

发布时间：2018-04-13 03:27

本文选题：道路工程 + 环氧树脂磨耗层　；参考：《沈阳建筑大学学报(自然科学版)》2017年06期

【摘要】：目的分析水泥路面改性环氧树脂磨耗层骨料形状特征,建立评价指标体系,推荐抗剥落性最好的骨料类型.方法利用骨料图像测量系统和数字图像处理技术,对4种骨料的轮廓形状、棱角性和表面纹理等形状特征进行量化研究,建立二级评价体系,利用层次分析法计算各级指标权重,进而对4种骨料的抗剥落性进行评估.结果玄武岩、花岗岩、石灰岩和辉绿岩4种骨料的针状性相似;玄武岩和辉绿岩的圆度和球度更接近于1,对应的抗滑耐磨性能优于花岗岩和石灰岩;石灰岩的棱角度数值最高,其次是花岗岩,最后是玄武岩和辉绿岩;表面纹理指数越高,细观纹理性能越优异,凹凸的粗糙表面也就越多;计算4种骨料的骨料形状特征综合评价指标Asc值,指出玄武岩是最理想的磨耗层骨料类型,辉绿岩次之;并利用玄武岩骨料铺筑一油一石和两油两石的实体工程,半年后检测两种施工工艺的抗拉强度和剪切强度均大于1.50 MPa,满足粘结强度的要求.结论利用层次分析法计算指标权重,结合骨料形状特征综合评价指标的计算,选择水泥路面改性环氧磨耗层骨料,为工程中预防性养护的进一步发展打下理论基础.
[Abstract]:Objective to analyze the shape characteristics of epoxy resin wear layer aggregate modified by cement pavement, to establish an evaluation index system and to recommend the type of aggregate with the best peeling resistance.Methods by using the aggregate image measurement system and digital image processing technology, the shape characteristics of four kinds of aggregates, such as contour shape, angularity and surface texture, were quantitatively studied, and a secondary evaluation system was established.Analytic hierarchy process (AHP) was used to calculate the weight of indexes at all levels, and then to evaluate the anti-peeling ability of four kinds of aggregates.Results the acicular properties of basalt, granite, limestone and diabase are similar, the roundness and sphericity of basalt and diabase are closer to 1, the corresponding skid resistance is better than that of granite and limestone, and the angularity of limestone is the highest.Secondly, granite, and finally basalt and diabase; the higher the surface texture index, the better the meso-texture performance, and the more rough surface is. The Asc value of aggregate shape characteristics of four kinds of aggregates is calculated.It is pointed out that basalt is the most ideal aggregate type of wear layer, followed by diabase, and the solid engineering of one oil, one stone and two oil rocks is constructed by using basalt aggregate.Six months later, the tensile strength and shear strength of the two kinds of construction processes are all more than 1.50 MPA, which meet the requirements of bond strength.Conclusion the weight of index is calculated by AHP and the aggregate shape characteristic is calculated. The modified epoxy wear layer aggregate of cement pavement is selected, which lays a theoretical foundation for the further development of preventive maintenance in engineering.
【作者单位】：长安大学公路学院;陕西交通职业技术学院公路与铁道工程学院;
【基金】：国家自然科学基金项目(51508030) 陕西省交通运输厅科研项目(14-09K) 陕西交通职业技术学院院级科研项目(YJ17006)
【分类号】：U414

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