开展旧混凝土路面上加铺沥青面层防治反射裂缝的研究，是很有必要的。
Launch old concrete road surface is it spread pitch layer is it reflect research of crack to prevent and cure to add, it is very necessary.
因此继续开展旧水泥混凝土路面上加铺沥青面层防治反射裂缝设计方法的研究，是必要而且是可行的。
It was necessary and feasible to study the design to prevent reflecting cracks on the asphalt overlaid on the old cement concrete pavement.
研究玻璃纤维格栅在防治与控制反射裂缝中的作用机理，对其施工工艺进行详细的介绍。
This paper also studies the principle respectively how glass fiber grid prevents and controls reflection crack, and introduces corresponsive construction crafts in detail.
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