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Evaluation of a Prototype Integrated Pavement Screed for Screeding Asphalt or Concrete Crater Repairs.
| 题名： | Evaluation of a Prototype Integrated Pavement Screed for Screeding Asphalt or Concrete Crater Repairs. |
| 作者： | Cox, B. C; Hoffman, N. R; Carr, T. A. |
| 摘要： | Finishing, or screeding, the hot mix asphalt or rapid-setting concretesurface of a crater repair is important for rapid airfield damage recovery(RADR) since it determines the aircraft ride surface quality. The objectiveof RADR repairs is to expediently produce a flush repair, defined as ±0.75in. of the surrounding pavement surface, with minimal logistical andpersonnel burden. Multiple screeds were previously evaluated; the mostrecent project proposed a prototype design of a telehandler-operatedintegrated screed for both small and large repairs using asphalt orconcrete. This project’s objective was to finalize the prototype design andfabricate and test the prototype RADR screed.The prototype RADR screed was successful for small repairs (8.5×8.5 ft).Large repairs (30×30 ft) were generally successful with modest repairquality criteria (RQC) issues being the only notable deficiencies. Largeconcrete repair RQC issues were attributed to plastic formworkmovement, and large asphalt repair RQC issues were attributed tocompaction issues or improper roll-down factors. Methods to mitigatethese factors were investigated but should be further evaluated. Overall,the RADR screed was successful from technical perspectives but,functionally, is 600-800 lb overweight. Weight reduction should beconsidered before entering production. |
| 总页数： | 133 pages |
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