论文部分内容阅读
沥青路面施工中的离析是影响路面质量的关键因素之一。离析现象的成因是复杂的,通常由摊铺机结构、供料方式、摊铺技术和沥青混合料质量等方面的原因形成。事实证明,如果对施工过程进行科学合理地控制,则可以有效减少离析现象的发生,从而大大提高沥青路面的质量。 离析通常分为骨料离析和温度离析。骨料离析是指沥青混合料中大粒径骨料分别聚集,处于较为明显的不均匀混合状态,一般由机械因素引起;温度离析是指沥青混合料中各部分温度出现明显差异。离析的危害性很大,可对路面质量造成多方面的影响。沥青混合料产生离析的主要原因及防止措施如下。
Asphalt pavement construction segregation is one of the key factors affecting the quality of pavement. The causes of segregation are complex and are often caused by paver construction, feeding methods, paving techniques and the quality of asphalt mixtures. Facts have proved that if the construction process of scientific and rational control, you can effectively reduce the segregation phenomenon, thereby greatly improving the quality of asphalt pavement. Segregation is usually divided into aggregate segregation and temperature segregation. Aggregate segregation refers to the aggregation of large-sized aggregates in the asphalt mixture, respectively, in a more obvious heterogeneous mixing state, which is usually caused by mechanical factors. Temperature segregation refers to the significant difference in the temperature of various parts of the asphalt mixture. Segregation of the great danger, the road quality can have a wide range of effects. The main reasons for the segregation of asphalt mixture and the preventive measures are as follows.