目前,处理膨胀土的方法主要是化学改性,如掺入石灰、水泥、粉煤灰及氧化钠、氧化钙等来稳定膨胀土,其中掺入石灰处理最为常用,其出发点是,从工程措施上封水、保水,以控制膨胀土水环境尽可能不发生变化。结合某公路工程二标段的路基膨胀土室内与室外试验,并对其进行评价和判定,目的是为了探讨膨胀土改性后填筑的路基自然受水后的工程特性。 Currently, the treatment of expansive soil is mainly chemical modification, such as the incorporation of lime, cement, fly ash and sodium oxide, calcium oxide to stabilize the expansive soil, which mixed lime treatment most commonly used, the starting point is that from the engineering measures Seal the water, water, in order to control the expansion of soil and water environment as far as possible without change. Combined with indoor and outdoor tests of subgrade expansive soil of the second tendering section of a highway project and its evaluation and judgment, the purpose is to explore the engineering characteristics of the embankment filled with modified expansive soil after being naturally subjected to water.