Abstract
The multiple strip-sandwich method is a specially devised method using quicklime and filter fabric for embankments with difficult cohesive soils. A quicklime layer of about 5cm thick, sandwiched between two sheets of filter fabric of 30cm wide, is placed in a triangular configuration with a horizontal pitch of about 2m at each stage of piling cohesive soils. The usefulness of this method has been proved by field tests and a practical large scale work, but some problems remain yet for the establishment of the design procedure of the method. To make the multiple strip-sandwich method more practical, this paper examines and analyzes the past data obtained in the laboratory tests, field tests and the practical work, and presents the diagrams to use for evaluating the improvement effect of this method.
