When emergency airfield repairs are required, proprietary rapid-setting concrete pavementmaterials are not always available. When repairs must be conducted at remote locations, fieldpreparedrapid-setting concrete pavement materials can be used for temporary airfield repairsthat withstand aircraft traffic within 6 to 8 hours. The U.S. Army Engineer Research andDevelopment Center (ERDC) examined 18 mixture proportions utilizing calcium chloride as areadily available set-accelerating admixture. These concrete mixture proportions were designedto incorporate locally available aggregates and portland cements, with the intent of reducing thelogistical burden currently associated with using proprietary rapid-setting concrete materials indamaged expeditionary airfields. Laboratory investigations consisted of measuring theperformance of the concrete mixture proportions for both plastic and hardened properties inaccordance with ASTM International standard concrete testing methods. Performancemeasurements were taken over time and compared to standard acceptance values to determinethe suitability of the mixture created. This study concluded that suitable rapid-setting concreterepair materials could be made with a variety of local portland cement and aggregate typesthrough the addition of calcium chloride. However, the cement content must be high (750 to1,000 lbs/yd3) to attain sufficient compressive and flexural strengths within a 6- to 8-hr timeperiod.
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