沥青混凝土是一种塑性材料,由一定数量的沥青、粉砂、细砂、石子加热混合搅拌制成。它可在水上也可在水下的抛石体中使用,在重力作用下灌注抛石体空隙并达到一定厚度时,抛石体具有对水流顶冲的冲击力和回流淘刷能力的塑性抵抗。对防止抛石体崩塌与根石走失有一定的效果。 Asphalt concrete is a plastic material, made of a certain amount of asphalt, silt, fine sand, gravel heated mixing. It can be used on the water or in the underwater rock-throwing body. Under the action of gravity, when the void of the rock-throwing body is filled and reaches a certain thickness, the rock-hold body has the plastic resistance to the impingement of the water flow and the recirculation scouring ability . To prevent the collapse of rock and stone loss have a certain effect.