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https://hdl.handle.net/11681/33049Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Bell, Haley P., 1982- | - |
| dc.contributor.author | Cox, Benjamin C. | - |
| dc.contributor.author | Edwards, Lulu. | - |
| dc.contributor.author | Garcia, Lyan I. | - |
| dc.contributor.author | Hoffman, Nolan R. | - |
| dc.contributor.author | Mejias-Santiago, Mariely | - |
| dc.contributor.author | Johnson, Jared L. | - |
| dc.date.accessioned | 2019-06-13T13:34:53Z | - |
| dc.date.available | 2019-06-13T13:34:53Z | - |
| dc.date.issued | 2019-06 | - |
| dc.identifier.govdoc | ERDC TR-19-8 | - |
| dc.identifier.uri | https://hdl.handle.net/11681/33049 | - |
| dc.identifier.uri | http://dx.doi.org/10.21079/11681/33049 | - |
| dc.description | Technical Report | - |
| dc.description.abstract | The traditional crater repair equipment and materials developed under the Rapid Airfield Damage Recovery (RADR) program, while highly capable, are large, expensive, and logistically challenging. Research projects from 2016 and 2017 identified lighter and leaner crater repair equipment and backfill materials in an attempt to decrease some of the economic and logistical burdens on the U.S. Air Force. The RADR Technology Integration Experiment assessed the lighter and leaner equipment, materials, and methods for small crater repairs in a relative full-scale environment. The experiment was conducted in August 2017 at the Silver Flag Exercise Site located at Tyndall Air Force Base, FL. The lighter and leaner technologies were compared with the traditional crater repair process. Flowable fill, polyurethane foam, cement-stabilized soil, and geocells with granular fill were proven to be viable backfill options for repairing craters when capped with rapid-setting concrete. This effort resulted in successful crater repair solutions using the lighter and leaner technologies with limited increases in repair time. An optimized small crater repair package was developed based on the results of this experiment. | en_US |
| dc.description.sponsorship | Air Force Civil Engineer Center (U.S.) | en_US |
| dc.description.tableofcontents | Abstract .................................................................................................................................... ii Figures and Tables ................................................................................................................... v Preface .................................................................................................................................... ix Unit Conversion Factors ......................................................................................................... x 1 Introduction ...................................................................................................................... 1 1.1 Background ........................................................................................................ 1 1.2 Objective and scope .......................................................................................... 2 2 Test Site Description ........................................................................................................ 3 3 Equipment and Material Descriptions........................................................................... 5 3.1 Traditional RADR crater repair equipment ....................................................... 5 3.1.1 Utility vehicles (UTVs) .................................................................................................. 5 3.1.2 Line-of-sight profile measurement devices ............................................................... 6 3.1.3 Compact track loaders (CTL) and attachments ......................................................... 6 3.1.4 Simplified volumetric concrete mixer ........................................................................ 8 3.1.5 Telehandler................................................................................................................ 10 3.1.6 Front-end loader ........................................................................................................ 10 3.1.7 Excavator with hammer and bucket attachments .................................................. 11 3.1.8 Tractor truck with flatbed trailer............................................................................... 13 3.1.9 Water truck ................................................................................................................ 14 3.1.10 Concrete finishing tools ............................................................................................ 14 3.2 Lighter and leaner RADR crater repair equipment ........................................15 3.2.1 Mini skid steer ........................................................................................................... 15 3.2.2 Diamond blade saw attachment .............................................................................. 16 3.2.3 Backhoe loaders ....................................................................................................... 17 3.2.4 Rammer ..................................................................................................................... 18 3.2.5 Plate compactor ........................................................................................................ 19 3.2.6 Tiller attachment ....................................................................................................... 19 3.2.7 Mid-size rider sweeper .............................................................................................. 21 3.2.8 FOD Boss ................................................................................................................... 21 3.2.9 Telehandler screed ................................................................................................... 22 3.2.10 Deployable volumetric concrete mixer .................................................................... 23 3.2.11 Telehandler forklift .................................................................................................... 24 3.3 Crater repair materials .................................................................................... 24 3.3.1 Rapid-setting flowable fill ......................................................................................... 25 3.3.2 Polyurethane foam .................................................................................................... 25 3.3.3 Silty sand ................................................................................................................... 27 3.3.4 Portland limestone cement ...................................................................................... 28 3.3.5 Geocells ..................................................................................................................... 29 3.3.6 Rapid-setting concrete .............................................................................................. 30 4 Traditional RADR Crater Repair Process ..................................................................... 32 5 Experiment Training Procedures and Results ............................................................ 40 5.1 Procedures ...................................................................................................... 40 5.2 Results ............................................................................................................. 41 6 Test Procedures and Results ........................................................................................ 44 6.1 Test #1: Lighter and leaner equipment; rapid-setting flowable fill backfill ....................................................................................................................... 45 6.1.1 Procedure .................................................................................................................. 45 6.1.2 Results ....................................................................................................................... 51 6.2 Test #2: Lighter and leaner equipment; polyurethane foam backfill ......... 59 6.2.1 Procedure .................................................................................................................. 59 6.2.2 Results ....................................................................................................................... 63 6.3 Test #3: Lighter and leaner RADR equipment; cement-stabilized silty sand backfill ...................................................................................................... 68 6.3.1 Procedure .................................................................................................................. 68 6.3.2 Results ....................................................................................................................... 74 6.4 Test #4: Traditional equipment; geocells with sand backfill ....................... 80 6.4.1 Procedure .................................................................................................................. 80 6.4.2 Results ....................................................................................................................... 85 6.5 Summary of test results ................................................................................. 90 7 Conclusions and Recommendations ........................................................................ 100 7.1 Conclusions ................................................................................................... 100 7.2 Recommendations ....................................................................................... 103 References .......................................................................................................................... 104 Report Documentation Page | - |
| dc.format.extent | 118 pages / 30.50 Mb | - |
| dc.format.medium | - | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Geotechnical and Structures Laboratory (U.S.) | en_US |
| dc.publisher | Environmental Laboratory (U.S.) | - |
| dc.publisher | Engineer Research and Development Center (U.S.) | - |
| dc.relation.ispartofseries | Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC TR-19-8 | - |
| dc.rights | Approved for Public Release; Distribution is Unlimited | - |
| dc.source | This Digital Resource was created in Microsoft Word and Adobe Acrobat | - |
| dc.subject | Airfield damage repair | en_US |
| dc.subject | Repair airfield damage recovery | en_US |
| dc.subject | Concrete | en_US |
| dc.subject | Rapid-setting concrete | en_US |
| dc.subject | Geotextiles | en_US |
| dc.subject | Foam | en_US |
| dc.subject | Flowable fill | en_US |
| dc.subject | Cement-stabilized | en_US |
| dc.title | Rapid airfield damage recovery technology integration experiment | en_US |
| dc.type | Report | en_US |
| Appears in Collections: | Technical Report | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ERDC TR-19-8.pdf | 31.23 MB | Adobe PDF |  View/Open |