高液限粘土路用填料的改良研究

为了对高液限粘土进行路用填料改良研究,分别对其进行了石灰、粉煤灰、水泥、石灰加粉煤灰以及砂砾的改良试验。试验结果表明,高液限粘土采用4％,5％的石灰改良后,CBR值分别为原土的12.5,14.3,14.7和16.1,15.6,16.0倍;经粉煤灰改良后的高液限粘土CBR强度改善不明显;采用3％,4％的水泥改良后,高液限粘土CBR值分别为原土的9.0,9.0,9.2和12.3,12.8,13.8倍;石灰和粉煤灰联合改良后,高液限粘土CBR值分别为原土的6.5,7.1,8.1和15.0,15.8,16.8倍。

Study on Improvement of High Liquid Limit Clay Used as Pavement Filling

In order for study on the improvement of high liquid limit clay used as pavement filling,carry out test for the improvement of clay mixed with lime,flyash,cement,lime-flyash and grit separately.The result indicates that the CBR value of the high liquid limit clay improved with 4% or 5% lime is 12.5,14.3,14.7 or 16.1,15.6,16.0 multiples to that of the original clay;CBR strength of the high liquid limit clay improved with flyash is not increased obviously;CBR value of the high liquid limit clay improved with ...