砂砾土为土石混合填料,比起单独的素土填料,路基压实成型后沉降量较小,从而可减少新老路基的不均匀沉降,这点对改扩建工程非常有利。对于土石混填路基压实检测方的新思考,确保检测的科学性。 Gravel soil is a mixture of soil and rock, compared with the separate plain soil filler, subgrade compaction after the formation of small settlement, which can reduce the uneven settlement of new and old roadbed, which is very beneficial to the expansion project. For the new thinking of earth and rock mixed roadbed compaction testing square, to ensure the scientific testing.