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为减小高液限土弃方处理或改良填筑造成的经济损失,通过室内试验研究了高液限土的基本特性,并结合现场路填筑试验,研究了其直接填筑性能和相应的质量控制参数。研究结果表明:高液限粘土和含砂高液限粘土可用于路堤直接填筑,填筑质量宜通过含水率、压实度、空气率3个参数控制;填筑过程中含水率应满足-2%≤ω-ωop≤6%;填筑碾压后的压实度应大于90%;高液限粘土空气率控制范围为4%≤va≤8%,含砂高液限粘土空气率控制范围为va≤13%。
In order to reduce the economic loss caused by disposal of high liquid limit soil or improvement of filling, the basic characteristics of high liquid limit soil were studied through laboratory experiments. Combined with the field road filling test, the direct filling performance and the corresponding Quality control parameters. The results show that the high liquid limit clay and sandy liquid high limit clay can be used for direct embankment filling. The quality of filling should be controlled by three parameters: water content, compaction degree and air rate. The water content in the filling process should meet - 2% ≤ ω-ωop ≤ 6%; compaction degree after filling and compaction should be more than 90%; the control range of air content of high liquid limit clay is 4% ≤va≤8% The range is va≤13%.