Abstract: For the big dimension of sand-gravel，the test method of elastic modulus in test methods of soils for highway engineering cann’t be applied to sand-grave1.This paper improves the test method of elastic modulus of sand-gravel，and the test result Can be more closer to the fact.

Key words: sand-graval, elastic modulus , improvement on test method

摘要： 针对砂砾石颗粒粒径大、与<公路土工试验规程》回弹模量试验不适用的问题，在试验仪器和方法上作了一定 的改进，以使测试的砂砾石材料回弹模量更接近实际．

关键词: 砂砾石, 回弹模量, 试验方法改进