Longer life, reduced cost

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Longer life, reduced cost

机译：使用寿命更长，成本更低

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Subgrade contamination is the leading cause of failure in both paved and unpaved roads. Aggregate layers used to support the traffic or pavement typically rest on a subgrade of sand, silt or clay. Without permanent separation, two factors will undoubtedly lead to the contamination of the aggregate layers: (1) Fine-grained soils will enter into the voids of the aggregate, preventing proper drainage, and (2) aggregate will be lost punching into the soil.

机译：路基污染是铺砌和未铺砌道路故障的主要原因。用于支撑交通或路面的骨料层通常位于沙子、淤泥或粘土的路基上。如果没有永久分离，两个因素无疑会导致骨料层的污染：（1）细粒土壤会进入骨料的空隙，妨碍适当的排水，以及（2）骨料会流失到土壤中。

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《Roads & bridges》 |2007年第9期|86-0|共1页
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Longer life, reduced cost

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