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.
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。
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The foundations of low-rise residential Buildings are nearly all supported on spread footings, wide Bases (usually ofconcrete) that support walls or piers and distribute the load over a greater area.
This new kind of slope protection can avoid some defects of traditional concrete prefabricated components and is worth of being spread in grit slope protection.