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04929aam a2200565Ic 4500 001 F3F077E2B7CA11EC864CB83724ECA4DB 003 SILO 005 20220409010100 008 150710s2015 iauado fsbt s000 0 eng d 035 $a (OCoLC)913592434 040 $a UIG $b eng $e rda $c UIG $d SILO 088 $a InTrans Project 13-479 088 $a IHRB Project TR-664 100 1 $a Li, Cheng, $e author. $u Iowa State University. 245 10 $a Low-Cost Rural Surface Alternatives: $b Demonstration Project $c Cheng Li, Jeramy Ashlock, David White, and Pavana Vennapusa 264 1 $a Ames, Iowa $b Institute for Transportation, Iowa State University $c 2015 300 $a xviii, 222 pages (242 pages in PD file) $b illustrations, charts, photographs (chiefly color) 536 $a Performed by Iowa State University, Institute for Transportation $c InTrans Project 13-479 536 $a Sponsored by the Iowa Department of Transportation, Iowa Highway Reseach Board $c IHRB Project TR-664 500 $a June 2015 -- Technical Report Documentation Page 504 $a Includes bibliographic references (pages 169-173) 520 3 $a The goals of this project were to implement several stabilization methods for preventing or mitigating freeze-thaw damage to granular surfaced roads and identify the most effective and economical methods for the soil and climate conditions of Iowa. Several methods and technologies identified as potentially suitable for Iowa were selected from an extensive analysis of existing literature provided with Iowa Highway Research Board (IHRB) Project TR-632. Using the selected methods, demonstration sections were constructed in Hamilton County on a heavily traveled two-mile section of granular surfaced road that required frequent maintenance during previous thawing periods. Construction procedures and costs of the demonstration sections were documented, and subsequent maintenance requirements were tabulated through two seasonal freeze-thaw periods. Extensive laboratory and field tests were performed prior to construction, as well as before and after the two seasonal freeze-thaw periods, to monitor the performance of the demonstration sections. A weather station was installed at the project site and temperature sensors were embedded in the subgrade to monitor ground temperatures up to a depth of 5 ft and determine the duration and depths of ground freezing and thawing. An economic analysis was performed using the documented construction and maintenance costs, and the estimated cumulative costs per square yard were projected over a 20-year timeframe to determine break-even periods relative to the cost of continuing current maintenance practices. Overall, the sections with biaxial geogrid or macadam base courses had the best observed freeze-thaw performance in this study. These two stabilization methods have larger initial costs and longer break-even periods than aggregate columns, but counties should also weigh the benefits of improved ride quality and savings that these solutions can provide as excellent foundations for future paving or surface upgrades. 500 $a Catalogers note: This record is for the full-length report. A 4-page tech transfer summary is also available, at a link in this record. The summary is not cataloged individually. 516 $a Text file in PDF format. 538 $a System requirements: Adobe Acrobat, Adobe Acrobat Reader, or other PDF reading software. 538 $a Mode of access: World Wide Web 513 $a Final Report 650 0 $a Gravel roads $z Iowa. 650 07 $a Cost effectiveness $2 trt 650 07 $a Demonstration projects $2 trt 650 07 $a Freeze thaw durability $2 trt 650 07 $a Gravel roads $2 trt 650 07 $a Highway maintenance $2 trt 650 07 $a Life cycle costing $2 trt 650 07 $a Road construction $2 trt 650 07 $a Rural areas $2 trt 650 07 $a Unpaved roads $2 trt 700 1 $a Ashlock, Jeramy, $e author. $u Iowa State University. 700 1 $a White, David, $e author. $u Iowa State University. 700 1 $a Vennapusa, Pavana, $e author. $u Iowa State University. 710 2 $a Iowa State University. $b Institute for Transportation, $e performing body. 710 1 $a Iowa. $b Department of Transportation, $e sponsoring body. 856 40 $a Iowa Publications Online $3 Online Access $z Full report $u http://publications.iowa.gov/id/eprint/20128 856 42 $a Iowa Publications Online $3 Online Access $z Tech transfer summary $u http://publications.iowa.gov/id/eprint/20128 856 40 $a DIgital Repository @ Iowa State University $3 Online Access $z Full report $u http://lib.dr.iastate.edu/intrans_reports/125 856 42 $a DIgital Repository @ Iowa State University $3 Online Access $z Tech transfer summary $u http://lib.dr.iastate.edu/intrans_techtransfer/77 941 $a 1 952 $l IAOX771 $d 20240710103058.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=F3F077E2B7CA11EC864CB83724ECA4DB 994 $a C0 $b UIGInitiate Another SILO Locator Search