增大击实功的击实试验研究

Tamping test study of increasing tamping power

压实度是路基填筑时控制路基强度和稳定性的关键指标。通过室内试验研究了击实功对路基压实度的影响。结果表明,增大击实功,路基土的最大干密度和7d无侧限抗压强度都有显著提高,抗压强度最大增幅达到50%左右。因此增加路基土的密实度,可以明显地提高路基土的强度,延长路基的使用寿命。

Compaction is a key index in controlling roadbed intensity and stability during the roadbed construction. Through indoor test of impact of tamping power on roadbed compaction, the authors found out the maximum dry density of roadbed soil and seven-day unconfined compression intensity were enhanced and increased if the tamping power was increased, and the maximum increasing extent for the compressive strength reached 50 percent.