DEVELOPMENT AND TESTING DF RAPID REPAIR METHODS FDR WAR DAMAGED RUNWAYS

摘要

A need exists to establish a main runway repair method that is rapid, effective, and easy to install. The primary objective of this research was to develop a rapid runway repair method that could be implemented by the armed forces within their current resources. A method of mixing fine aggregate, coarse aggregate, cement, and water was developed using soil stabilizing equipment. The required testslab thickness was selected from known slab thicknesses in existence today. The mix design was developed for a roller compacted mix. The mix design was tested in a laboratory for compressive, tensile and flexural strength. Simplified relationships were developed between the degree of compaction versus the strength of concrete. Moist Rodded Unit Weight tests were performed on the fine and coarse aggregates to determine a pre-mix unit weight of each material. The mix proportions by weight of fine aggregate, coarse aggregate, and cement were converted to pre-mix volumes. An angle of repose test was performed on the fine and coarse aggregates. The pre-mix volumes were converted to layer thicknesses. A field test procedure was developed to conduct a large scale test of the method. A large scale test was performed. Keywords: Settlement tests, Flexural strength, Tactical strength. (kr)