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Title: Repair and restoration of paved surfaces, FY 82. Phase II, Backfilling of craters
Authors: Barber, Victor C.
Keywords: Backfills
Compaction (Soils)
Soil compaction
Soil stabilization
Pavement repair
Pavement maintenance
Publisher: Geotechnical Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; GL-83-16.
Description: Technical report
Abstract: The purpose of Phase II of REREPS (repair and restoration of paved surfaces) is to evaluate previously developed techniques and materials and to conduct necessary studies to determine the most beneficial backfill material. The study is to include new materials and innovative methodology to the greatest practicable extent. Compaction requirements are to be analyzed by comparison with existing requirements as modified by REREPS results to date. Specific compaction requirements include a quantification of compaction requirements versus depth below the load as well as subgrade compaction versus pavement strength and stiffness. Another specific requirement is to study the applicability of the sand grid support concept. In addition, other new methods and materials will be reviewed, developed, and/or introduced, as appropriate. This study constitutes partial completion of these objectives. An investigative research effort has been made to review the status of REREPS development to data. Conclusions are that: a.) A significant reduction in current rigid or flexible pavement compaction requirements for backfill of a crater is not feasible and does not warrant further investigation. b.) The concept of reduced compaction for conventional pavements through use of current criteria for heavy-load pavements over soft soils is a possible alternative to in-crater compaction. c.) Specialized, highly competent in-crater compaction equipment is essential for the compaction of crater backfill to support conventional pavements. d.) The concept of compaction elimination or significant reduction by using synthetic backfill and pavement materials, earth reinforcing, lightweight modules, and crater-spanning techniques is a potential solution to the crater-repair problem. e.) The employment of pile foundations or free-span bridging systems is a potential solution.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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