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膨胀性重亚粘土上质在苏北里下河地区分布很广．根据平原水网地区建路充分利用当地材料的要求，取粘土堆积路基，含水量一般达35％左右，而本地区雨量充沛，施工期短，土难晒干、难破碎。本文提出相应对策．
Expansive heavy sub-clay on the quality of the Lixibei area in northern Jiangsu is widely distributed. According to the requirements of local materials in the construction of plain water network, taking the clay accumulation subgrade as an example, the water content is generally about 35%, while the rainfall in this area is abundant and the construction period is short. This article proposes the corresponding countermeasure.