| 摘要 |
<p>A process for solidifying industrial waste with cement, which comprises mixing industrial waste with cement that is substantially non-shrinking or swelling in volume change upon curing, and curing the cement to form a solidified waste. Hydrophilic substances may further be added to the cement for curing. This process enables formation of dense solidifed waste having small voids such as capillary voids, thus minimizing the exudation of harmful substances. In addition, since no shrinkage takes place upon curing, no tensile stress is generated in the cement surrounding fine particles of the waste, and hence reduction in solid waste strength is markedly depressed. This serves to increase the amount of waste to be packed. Previous addition of hydrophilic substances serves to keep fluidity of the cement before curing even when water is completely absorbed by water-absorptive waste, thus being extremely advantageous in conducting curing work.</p> |
