The numerical modelling of crater repairs in airfield runways

摘要

This paper describes the numerical modelling of the repair of an explosively formed crater. The crater is repaired by infilling with compacted material and covering the repair with a layer of rapid setting flood grout concrete. The paper suggests minimum Young's modulus requirements for the crater infill and for the flood grout. The results show that a load distributed between two wheels produces lower runway deflections and stresses than the same load on a single wheel. Three further research areas are identified: first, laboratory testing of flood grout less than 1 h old; second, the establishment of the relationship between the Youg's modulus, compressive strength and flexural strength of the flood grout up to 28 days old; and third, the interface effects between the crater repair and the existing runway.