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近年来,广西地区境内在建道路规模很大,路面材料用量激增,改性沥青AC-13C混凝土面层常用的玄武岩或辉绿岩集料,往往料源无法满足工程的需要。通过对市场的调查,目前发现广西藤县闪长岩材料储量较大,就地取材可保证材料供应满足现场生产需求。用闪长岩代替辉绿岩和玄武岩用于AC-13C改性沥青混凝土上面层,有利于解决沥青混凝土上面层石料短缺问题,又可以缩短运距,降低工程造价。
In recent years, the roads under construction in Guangxi are very large and the amount of pavement materials surged. The basalt or diabase aggregate commonly used in the modified asphalt AC-13C concrete surface often can not meet the needs of the project. Through the investigation of the market, it has been found that there is a large amount of material in Guangxi Tengxian diorite and the availability of local materials can ensure that the material supply meets the requirements of on-site production. The use of diorite instead of diabase and basalt for the upper layer of AC-13C modified asphalt concrete helps to solve the problem of shortage of stone in the upper layer of asphalt concrete, and can shorten the distance and reduce the construction cost.