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中文摘要：
文章针对皖南山区崩解性红砂岩，不经过预崩解或掺灰改良等措施，机械破碎解小后进行击实试验测得最大干密度和最佳含水率，在此基础上开展不同含水率及压实度下回弹模量、承载比和渗透系数等路用性能的试验研究。试验结果表明：在一定压实度下，回弹模量随着含水率的增大而减小，基本呈线性关系；在一定含水率下，随着压实度的增大，回弹模量及承载比呈线性递增变化，而浸水膨胀量、吸水量及渗透系数则呈线性递减趋势，即强度及水稳定性均随着压实度的增大而不断增强。试验结果初步论证了皖南山区红砂岩直接作为路基填料的可行性，可为有关红砂岩路基填筑工程提供参考。
英文摘要：
After the mechanical crushing without pre-disintegration or lime mixing improvement measures ,the maximum dry density and the optimum moisture content of disintegrated red sandstone in mountainous areas of southern Anhui were first measured by compaction test ,and then the experi-mental study of the road performance of such disintegrated red sandstone ,including resilient modu-lus ,California bearing ratio （CBR） and permeability coefficient ,was conducted under different mois-ture content and degree of compaction .The results show that ,the resilient modulus decreases with the increase of moisture content under a certain degree of compaction ,and the resilient modulus and CBR are enhanced linearly with the increase of the degree of compaction under a certain moisture con-tent ,but the amount of inundation swelling ,water absorption and permeability coefficient are quite the reverse .In other words ,the strength and water stability are enhanced with the increase of the de-gree of compaction .The results tentatively demonstrate the feasibility of red sandstone in mountain-ous areas of southern Anhui as direct subgrade filling material and provide a reference for the red sandstone roadbed construction engineering .
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