CAJ | 학술논문

膨胀土不能直接作为路基填料，必须经过换填或改良处理，以达到增加路基强度和提高水稳性的目的，保证路基稳定、耐久。结合膨胀土路基物理性质的特点，通过利用施工现场的弱、中膨胀土与非膨胀土填料进行合理拌合，改变其物理性质，使改良后的砂砾土可以作为路基填料，减少了膨胀土路基改良的施工成本并就地取材减少施工成本，快速、高效、优质地完成了施工任务，取得了较好的经济和社会效益。
팽창토불능직접작위로기전료，필수경과환전혹개량처리，이체도증가로기강도화제고수은성적목적，보증로기은정、내구。결합팽창토로기물이성질적특점，통과이용시공현장적약、중팽창토여비팽창토전료진행합리반합，개변기물이성질，사개량후적사력토가이작위로기전료，감소료팽창토로기개량적시공성본병취지취재감소시공성본，쾌속、고효、우질지완성료시공임무，취득료교호적경제화사회효익。
Expansive soil can’ t be used as subgrade filling directly which must be through replacement or improved processing to increase the roadbed strength and enhance the water stability, in order to guarantee the stability and durability. Combined with the characteristics of expansive soil subgrade physical properties, and mixing the weak, medium expansive soil and other soil reasonably in the construction site to change its physical properties, the improved gravel soil can be used as roadbed filling which reduce the construction cost of expansive soil roadbed improvement and by using the local materials also can reduce the construction cost, and complete the construction task rapidly, efficiently, with high quality, achieve good economic and social benefits.