砂改良土击实特性研究

Study on sand-improved soil compaction characteristics

通过击实试验,研究了掺砂量对砂改良土击实特性的影响规律,结果表明,砂改良土的最大干密度随含砂量的增大而增大,增大的趋势先快后慢,且最大干密度变化量较小,砂改良土的最优含水量随含砂量的增大而减小,且减小的趋势先快后慢。

Through compaction test,the paper studies the influencing law of sand-mixing amount upon sand-improved soil compaction characteristics. Results show that: the maximum dry density of sand-improved soil will increase with sand-carrying capacity increasing,the increasing trend will flow the law from fast speed to low speed,furthermore,the maximum dry density variation is smaller,the optimum moisture content of sandimproved soil will reduce with the sand-carrying capacity increasing,and the reducing tend follows the law from fast speed to low speed.