裂土(膨胀土——下同)是一种性质极差的粘性土,这对在其上修筑的建筑物(包括铁路路基)影响极大,这是大家熟知的事。为了改变裂土的工程性质,多年来,大家在这方面作过不少的努力,也取得了相当程度的进展,如用石灰、水泥、树脂、沥青、水玻璃、矿渣或它们的混合物等同这种土作用,达到改变或改善其某种工程性质的目的。 Cracked soil (expansive soil - the same below) is a very poor cohesive soil, which is well known to all over the buildings (including railway subgrade) that are built on it. In order to change the nature of the cracking project, many efforts have been made in this area over the years and a considerable amount of progress has also been made, such as using lime, cement, resin, asphalt, water glass, slag or mixtures thereof The role of soil, to change or improve the nature of some of its purpose.