Entrained Air-Void Systems for Durable Highway Concrete (2021) / Chapter Skim
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Pages 63-65
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63 Guidance on Protocols for Testing and Analysis Protocols for Testing and Analysis Air Content From the field-testing data, it was observed in several cases that pavement constructed using the same equipment and materials and exposed to the same environmental conditions can exhibit different levels of deterioration over time. Poor correlation was observed for the hardened air-void data for cores representing distressed F-T pavements and durable sections.
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From page 64... ...
64 Entrained Air-Void Systems for Durable Highway Concrete Observation for Air-Void System Testing Using the Flatbed Scanner Data obtained indicated that flatbed scanner data correlated well with the hardened air properties obtained from the same batch. Observations and Recommendations Based on Clustering • Systems with LA cements that are not retempered appear to reduce the risk of clustering.
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From page 65... ...
Guidance on Protocols for Testing and Analysis 65 • The selection of optimized thresholds is necessary to ensure reliable data. The following observations and recommendations will further improve CDF testing: • The microcomputer control presents a robust, flexible, and reliable method to replace mechanical or previously computerized F-T cabinets.
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