陕南膨胀土加灰改良的试验研究

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

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．

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.