开级配混合料 meaning in Chinese

open mix

Open graded friction courses ( ogfc ) is a kind of open graded porous asphalt mix designed to drain water on the road face when raining . it has good performance on draining , anti - slide and noise reducing . it is common used in foreign countries from 1980s , while the lack in china because its poor mechanics performance , due to the high pore rate , cannot fit for the heavy traffic load in china
开级配沥青磨耗层( ogfc )是一种具有相互连通空隙的开级配混合料，具有优良的排水、防滑、降噪等功能，然而该种混合料空隙率达15以上，沥青用量低，混合料的耐久性和强度会产生一定影响，由于我国高速公路重载、超载严重，按国外设计方法设计的ogfc混合料难以满足路用性能的要求，因此， ogfc在我国高等级公路建设中一直没有得到推行。