不同压实功下改良废弃土加州承载比试验研究

Experimental Study on California Bearing Ratio of Improved Waste Soil under Different Compaction Work

为了实现资源的集约利用,确定废弃土的强度能否满足路基填筑要求,在土中加入10%粉煤灰进行土的改良,进行同种含水量、不同击实功的下试验试样的室内浸水加州承载比试验,研究分析加入粉煤灰以及不同最大干密度情况下不同击实功对试样加州承载比的影响。结果表明:同种条件下,土的加州承载比随着压实功的增加而增大,并且随着最大干密度的增大,加州承载比的提升幅度越大;试样的加州承载比在同一含水量、同一压实功作用下,随着最大干密度的增大而提升,并且在最大干密度为2到2.5范围内的变化速率最大。

In order to realize the intensive utilization of resources and determine whether the strength of abandoned soil can meet the requirements of subgrade filling,after adding 10%of the soil to improve the soil,test samples are made under the same moisture content and different compaction powers.An indoor water immersion California load-bearing ratio test was carried out to study and analyze the influence of different compaction work on the California load-bearing ratio of the sample under conditions of adding fly ash and different maximum dry densities.Research analysis:Under the same conditions,the California load bearing ratio of soil increases with the increase of compaction work,and with the increase of the maximum dry density,the greater the increase in the California load bearing ratio;The California load-bearing ratio of the sample increases with the increase of the maximum dry density under the same water content and the same compaction work,and the change rate is the largest when the maximum dry density is within the range of 2 to 2.5.