2017 Volume 73 Issue 3 Pages 266-275
In this study, geotechnical properties of bamboo chips-soil mixture and its applicability as pedestrian pavement are investigated by a series of laboratory and in-situ tests. The following conclusions are obtained from this study: (1) Even if the bearing capacity of the bamboo chips-soil mixture decreases by the increase of mixture rate of bamboo chips, the value of CBR can be ensured 10% or more. Therefore, the bamboo chips-soil mixture can be used as a pedestrian pavement material. (2) Unconfined compressive strength of the bamboo chips-soil mixture is increased gradually according to the increase of mixture rate of bamboo chips. Also, by mixing many bamboo chips into the sandy soil and compacting the mixture densely, the stiffness of the bamboo chips-soil mixture becomes higher. (3) Even if the mixture was compacted densely, the bamboo chips-soil mixture is able to be ensured high permeability comparable to coarse sand or gravel. (4) Amount of the impact absorption of pedestrian pavement using the bamboo chips-soil mixture is affected significantly due to the change of climate. Increasing walkers, the surface of the pedestrian pavement is compacted and then becomes hard gradually. By using many bamboo chips, the impact absorption of the pedestrian pavement approaches that of the artificial grass pavement.
