Life cycle cost evaluation of alternatives to the nuclear density gauge for compaction testing on design-build projects

dc.contributor.author McLain, Kevin
dc.contributor.author Gransberg, Douglas
dc.contributor.author Gransberg, Douglas
dc.contributor.department Civil, Construction and Environmental Engineering
dc.date 2019-06-23T04:21:23.000
dc.date.accessioned 2020-06-30T01:12:58Z
dc.date.available 2020-06-30T01:12:58Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-01-01
dc.description.abstract <p>When Missouri Department of Transportation (MoDOT) implemented design–build (DB) contracting, it revised its quality assurance programme and shifted most of the compaction testing to the design-builder. As a result, fewer compaction tests were performed by state personnel and the need for speedy quality control testing by the agency to facilitate construction production disappeared. This paper reports the results of a study conducted by the department to evaluate three alternatives to the nuclear density gauge (NDG) using life cycle cost analysis and cost index number theory. The study’s objective was to investigate alternative soil compaction test devices and provide input to a decision regarding whether or not MoDOT should retain or replace the NDG. Despite the NDG successful track record, the ease of employment and speed with which the compaction results are delivered comes with a price in terms of life cycle costs. The NDG is regulated by the Nuclear Regulatory Commission and entails an onerous, ongoing administrative workload to permit its continued use. The NDG also incurs additional certification, storage and disposal costs, not found in non-nuclear compaction testing alternatives. This paper reports the results of a life cycle cost analysis of NDG and three alternatives: dynamic cone penetrometer (DCP), electrical density gauge and the sand cone (SC). The study finds that the SC and DCP are the most cost-effective but are the least cost-effective when measured on a basis of timely results. Thus, the NDG replacement/retention decision becomes one of how fast are compaction tests required by the agency. Since MoDOT has adopted contractor acceptance testing in its DB program, it now only conducts verification testing of contractor test results. Thus, the paper recommends that the NDG be replaced.</p>
dc.description.comments <p>This is an Accepted Manuscript of an article published by Taylor & Francis as McLain, Kevin W., and Douglas D. Gransberg. "Life cycle cost evaluation of alternatives to the nuclear density gauge for compaction testing on design-build projects." <em>Journal of Structural Integrity and Maintenance</em> 1, no. 4 (2016): 197-203. DOI: <a href="http://dx.doi.org/10.1080/24705314.2016.1240935" target="_blank">10.1080/24705314.2016.1240935</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_pubs/225/
dc.identifier.articleid 1225
dc.identifier.contextkey 14346945
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_pubs/225
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13876
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/225/2016_GransbergDouglas_LifeCycle.pdf|||Fri Jan 14 22:43:37 UTC 2022
dc.source.uri 10.1080/24705314.2016.1240935
dc.subject.disciplines Construction Engineering and Management
dc.subject.disciplines Transportation Engineering
dc.subject.keywords Life cycle costs
dc.subject.keywords soil compaction testing
dc.subject.keywords nuclear density gauge
dc.subject.keywords quality assurance
dc.subject.keywords quality control
dc.title Life cycle cost evaluation of alternatives to the nuclear density gauge for compaction testing on design-build projects
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication e8c5329d-c98c-445e-8cf1-c8422f247c47
relation.isOrgUnitOfPublication 933e9c94-323c-4da9-9e8e-861692825f91
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