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济南沥青混凝土对沥青有什么要求?

来源:http://www.ycgjglcl.com/ 日期:2022-04-11
  济南沥青混凝土是建筑高级沥青路面的代表性材料,应用范围还是比较广的,为了更好的使用它,我们理应多多了解它,那么济南沥青混凝土对沥青有什么要求?
  Ji 'nan asphalt concrete is the representative material of senior asphalt pavement construction, the application scope is relatively wide, in order to better use it, we should know more about it, so ji 'nan asphalt concrete for asphalt what requirements?
  附着力。适用于高等级道路、夏季高温持久、重载交通、停车场等行车速度较慢的路段,特别适用于车辆荷载剪应力大的结构层、稠度高的沥青应使用;在寒冷的冬季地区和交通量少的道路上,应使用稠度较低的沥青。
  Adhesion. Suitable for high-grade roads, summer high temperature lasting, heavy load traffic, parking lots and other slow road sections, especially suitable for the structural layer of large shear stress of vehicle load, high consistency of asphalt should be used; Asphalt with low consistency should be used in cold winter areas and on roads with little traffic.
  热敏性。在日、年温差较大的地区,应使用渗透指数较大的沥青。高等级道路、夏季长期高温地区、车流量大、停车场、信号灯控制的路口、车速较慢的路段或部位,需要使用软化点高的沥青;否则,请使用软化点较低的沥青。
  Heat sensitive. In areas with large diurnal and yearly temperature differences, asphalt with large permeability index should be used. High-grade roads, long-term high temperature areas in summer, large traffic flow, parking lots, intersection controlled by signal lights, slow sections or parts, need to use asphalt with high softening point; Otherwise, use asphalt with a low softening point.
  耐用性。沥青应具有足够的抗老化性能,即耐久性,使沥青路面具有较长的使用寿命。通过沸腾法试验,测定了沥青与骨料的附着力,反映了其抗水破坏性。等级越高,附着力越好。
  Durability. Asphalt should have enough anti-aging performance, that is, durability, so that asphalt pavement has a long service life. The adhesion between asphalt and aggregate was measured by boiling method, which reflected its water resistance. The higher the grade, the better the adhesion.
  可塑性。当25℃的延展性变为10℃的延展性或15℃的延展性时,不同等级的沥青的延展性明显不同,这反映了它们的低温性能。低温延展性越大,抗裂性越好。在冬季低温或高低温差地区,要求沥青具有较大的低温延性。
  Plasticity. When 25℃ ductility becomes 10℃ ductility or 15℃ ductility, the ductility of different grades of asphalt is significantly different, reflecting their low temperature properties. The higher the low temperature ductility, the better the crack resistance. In winter low temperature or high and low temperature difference area, asphalt is required to have a large low temperature ductility.
  安全。济南沥青混凝土认为应确定沥青加热熔化时的安全温度限值,以保证沥青的安全使用。通过闪点测试,确定沥青发热点闪火的温度——闪点,确定其安全使用范围。沥青越软(等级越高),闪点越低。
  Security. Determine the safe temperature limit for the heating and melting of asphalt to ensure the safe use of asphalt. Through flash point test, determine the temperature of asphalt flash hot spot -- flash point, determine its safe use range. The softer the pitch (higher grade), the lower the flash point.
  济南沥青混凝土对沥青有什么要求?我们从五个方面来讲述了这个问题,相信大家看完以上的讲解应该会有新的理解了,如果想了解的更多,就来网站www.ycgjglcl.com看看吧。
  Ji 'nan asphalt concrete for asphalt what requirements? We cover this issue from five aspects, I believe you should have a new understanding after reading the above explanation, if you want to know more, please come to the website www.ycgjglcl.com.
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