2020 Volume 15 Issue 4 Pages 705-714
Accelerated curing method is intended to determine if strength is gained in only 1 day for the laboratory mixing test, quality control, and work progress control. In this paper, a fundamental study was conducted on the accelerated curing method for kaolin and bentonite as the standard soil. After that, an experimental study was conducted to observe the strength development characteristics during improvement of the bottom sediments in the creek by accelerated curing method and normal curing method. From the fundamental study results with standard soils, it was found that a linear relationship is obtained between the unconfined compression strength from 1 day of accelerated curing method (qu1) and 28 days of the normal curing method (qu28). With the bottom sediments in the creek, qu1 was observed to be lower than qu28. In addition, the strength ratio (qu28/qu1) showed almost constant value regardless of the dosage of cementitious solidified material. However, there was a difference depending on the type of cementitious solidified material and the water cement ratio. These results show that the accelerated curing method is useful for presuming qu28.
