Accelerated pavement testing using the scaled KALES (Korea Accelerated Pavement Loading and Environmental Simulator) allows a rapid assessment of variation in pavement distress condition on the long term performance for material behaviors under labora...
Accelerated pavement testing using the scaled KALES (Korea Accelerated Pavement Loading and Environmental Simulator) allows a rapid assessment of variation in pavement distress condition on the long term performance for material behaviors under laboratory controlled condition. This facility consists of carts and guidance units which simulate a truck on the road. The major consideration in the decision to construct a scaled down accelerated testing facility involved manufacturing of a large scaled KALES in the near future from current experience, coupled with the need to search for productivity through new materials, processes and practices necessary to contain the costs of maintaining and rehabilitating the aging Korean expressway network. To operate the scaled KALES in the controlled laboratory, a test building was built in the Korea Highway Corporation in July 28th of 2000. In the first year, two series of accelerated tests has been peformed using the scaled KALES. As a first test, two experimental studies were peformed for evaluation of two different rehabilitation metfods for constraining asphalt concrete overlay against reflection cracking and effect of sub-structure system placed on the steel plate. Currently, this facility is being operated intended to evaluate applicability of two different patching materials. At the same time it is also under operation to study the whitetopping method. new building about 413㎡ was constructed to house the scaled KALES. It consists two test pits which is 6m×2m×1m to test various pavement systems including different soil types. And pipes to connect gages and wires were imbedded inside the test pits and underneath the floor to the operation room. The scaled KALES is still under modification.