陕南膨胀土加灰改良的试验研究

陕南膨胀土分布地区由于膨胀土地基的胀缩变形，常常导致建筑物开裂和毁坏。如何改良膨胀土，消除其胀缩性，加固膨胀土地基，确保工程建筑物的安全和稳定，是膨胀上分布地区工程建设实践中急待解决的重要课题。结合陕南三种类型的膨胀土，我们选取有代表性的试样进行了加灰（石灰、粉煤灰）处理的试验研究，其效果较好，消除或减弱了膨胀土的胀缩性，达到了改良膨胀上不良工程地质性质的目的．

THE TEST STUDY TO IMPROVE EXPANSIVE SOIL IN THE SOUTH OF SHAANXI WITH ADDING IN ASH CONTENT

In the expansive soil area of South Shaanxi, much damage has been made on the building because of theswell-shrinking deformation of expansive soil foundation. Therefore, Low to ameliorate expansive soil, elliminate swell--shrinking property, consolidate expansive soil foundation and guarantee the security and stabilityof the engineering construction building is a problem of the most significance urgently being solved. Here,the authors got the good results by means of the adding--ash test study of the typical three kinds of expansivesoil in the South of Shaanxi, having eliminated or lessened swell-shrinking property of expansive soil' Theobjective of improving the engineering geological properties of expansive soil has been well realized.