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河北省丰润县河头至润河公路的四公里沿海路段,系黑色粉质粘土路面。每逢雨季,泥泞如胶,春季风干,路面龟裂,麈土飞扬。为了改善这种天然土路状态,根据“因地制宜、就地取材”的精神,利用海滩贝壳,于去年春天,在这段路上铺筑了3.5公尺宽的贝壳路面。贝壳路面铺好后,经过一年多的雨水冲刷和行车考验,没有多大变形。这里仅提出简单的操作过程和点滴体会,供大家参考。操作方法第一次失败将路基先少许起毛(虚刨)5至6公分,将净土清除约二分之一,然后铺15公分厚,每平方公尺洒水6至8公斤,用1.5至2公噸碾碾压;再铺上层约10公分,中间留有拱度4％,由两边向中间碾压。这样做的结果。贝壳内含土过少,加之贝壳本身没有粘结力,致使滾压时,贝壳形成波浪式的转动。造成这种情况的原因,施工人员认为:第一没有开槽;第二贝壳本质坚硬干滑没有粘结力;第三掺土少。
Fengrun County, Hebei Province, Hohhot Run River Road, four kilometers along the coast, the Department of black silty clay road. Every rainy season, muddy gum, dry in the spring, the road cracked, earthy flying. In order to improve the state of this kind of natural dirt road, beach shells were used in accordance with the principle of “making the spotwork according to the local conditions” and last spring, paved 3.5 meters wide seashells on the road. Shell pavement paved, after more than a year of rain erosion and driving test, not much deformation. Here only put forward a simple operation and drip experience for your reference. The first failure of the method of operation is to subgrade the subgrade a little from 5 cm to 6 cm, remove about one-half of the net soils and then spread it to 15 cm. Sprinkle 6 to 8 kg per square meter with 1.5 to 2 mt Grind rolling; then shop about 10 cm above the middle with 4% camber, rolling on both sides to the middle. The result of this. Too little soil in the shell, combined with the shell itself has no adhesion, resulting in rolling, the shell formed a wave-like rotation. The reason for this situation, the construction staff that: the first no groove; the second shell of the nature of hard dry and non-bonded; the third mixed with less soil.