全幅摊铺热拌沥青混合料的缺点有哪些????

2025-03-28 17:25:45
推荐回答(1个)
回答1:

接缝质量不咋的,尽量不要让汽车车轮胎经常压倒,上面层的接缝和下面层接缝要错开200以上,就跟砌砖时候不要有通缝,通缝就成两个质量不砸的的地方重叠再一起,质量就更不咋的了。

拌沥青混合料的摊铺应符合哪些规定?
1 热拌沥青混合料应采用机械摊铺。摊铺温度应符合本规范表8.2.5-2的规定。城市快速路、主干路宜采用两台以上摊铺机联合摊铺。每台机器的摊铺宽度宜小于6m。表面层宜采用多机全幅摊铺,减少施工接缝。
  2 摊铺机应具有自动或半自动方式调节摊铺厚度及找平的装置、可加热的振动熨平板或初步振动压实装置、摊铺宽度可调整等功能,且受料斗斗容应能保证更换运料车时连续摊铺。
  3 采用自动调平摊铺机摊铺最下层沥青混合料时,应使用钢丝或路缘石、平石控制高程与摊铺厚度,以上各层可用导梁引导高程控制,或采用声纳平衡梁控制方式。经摊铺机初步压实的摊铺层应符合平整度、横坡的要求。
  4 沥青混合料的最低摊铺温度应根据气温、下卧层表面温度、摊铺层厚度与沥青混合料种类经试验确定。城市快速路、主干路不宜在气温低于10℃条件下施工。
  5 沥青混合料的松铺系数应根据混合料类型、施工机械和施工工艺等应通过试验段确定,试验段长不宜小于100m。松铺系数可按照表8.2.14进行初选。

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