Abstract:
Consolidation tests were carried out to investigate the effects of cement content, zinc ion concentration and curing temperature on the compression coefficient of cement solidified zinc contaminated (CSZC) soil. A regression formula was derived to correlate the compression coefficient of CSZC soil with the above-mentioned three parameters. The results indicate that the regression formula is able to reasonably predict the compression coefficient of CSZC soil provided that the compression coefficient of CSZC soil under a given combination of cement content, zinc ion concentration and curing temperature is known or the compression coefficient of the soil without contamination is known. In addition, the compression coefficient exponentially decreases with increasing cement content for a given zinc ion concentration, and increases with increasing zinc ion concentration for a given cement content. Moreover, the compression coefficient decreases with increasing curing temperature. The ratio of compression coefficient at different temperatures
to that at 20 ℃ satisfies the logarithm relationship of temperature.