Published: 1988
Total Pages: 335
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The U.S. Air Force has conducted research and development work since the early 1960s to improve the capability to repair bomb damaged airfields. As part of the in-house testing for the Rapid Runway Repair (RRR) Program, the Air Force Engineering and Services Center (AFESC) has conducted Development, Test and Evaluation on interim systems for crater and spall repairs. The two interim crater repair methods, precast slab and fiberglass mat over crushed stone, were tested. The precast slab tests were conducted in two phases, using two generations of the slab technology. The fiberglass mat over crushed stone tests compared two different polyurethane resins for use in rainy or high water table conditions. In addition to these tests of the repair methods, a comparative test of compaction equipment performance was conducted. The final test series evaluated the proposed polymer concrete formulations for the interim spall repair system, including water-tolerant polyurethane, furfuryl alcohol, and magnesium polyphosphate.