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通常,高速公路指的是在不下雨的状态下,车辆以80公里以上时速行驶的道路。然而,这样的道路假如碰上雨天的话,使用起来就不尽人意了,如路面上大量“囤积”的雨水,既会产生轮胎与地面、水分强烈摩擦的尖锐噪声,又会限制车速,使车轮打滑。对此,日本的科研人员于新近研究着一种新高速公路,经反复试验,这种道路的强度十分牢靠,安全性及行驶性均很拔群,它能遏制噪声及降低交通事故,是一种值得普及的理想公路。过去,公路的铺路程序为:在1厘米大小的石头中加入砂子,而后按比例混入沥青,再将它们洒在道路上,用压路机将之碾平,这种路面所含空洞约为4%。而育孕中的高新路的空洞含有率却高达20%。从表面来看,它的“相貌”很粗糙,原来这是为了确保它的强度,科研人员创新地将树脂及橡胶掺入沥青之中,这样能使小石头相互牢固地粘合在一起,完工后的路面强度远远领先于普通
In general, an expressway refers to a road on which a vehicle runs at a speed of 80 kilometers or more without rain. However, if such a road is hit by rainy day, it will be less satisfactory to use. For example, a large amount of “hoarding” of rainwater on a road surface will produce not only sharp noise with tires and ground and strong friction with water but will also limit the speed, Slipping the wheel. In response, Japanese researchers recently studied a new expressway. After repeated tests, the strength of this road is very strong and its safety and driving ability are very strong. It can curb noise and reduce traffic accidents, resulting in a An ideal road worth popularizing. In the past, roads were paved by adding sand to a 1-centimeter-sized stone and then mixing the asphalt proportionally, sprinkling it on the road and smoothing it with a roller, which contained about 4% of the voids in the road. The fertility of high-tech road hollow content is as high as 20%. On the face of it, its “appearance” is very rough, originally it is to ensure its strength, researchers innovatively incorporated resin and rubber into the asphalt, so that small stones can be firmly bonded together , Finished pavement strength far ahead of normal