Non-Nuclear Methods for Compaction Control of Unbound Materials (2014) / Chapter Skim
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14 chapter two cURRENT PRAcTIcES FOR cOMPAcTION cONTROL OF UNBOUND MATERIALS INTRODUcTION This chapter presents the pursued approach, summary of the responses, and key findings of the survey conducted in this study to collect information from state DOTs and Canadian provincial transportation agencies on their practices related to compaction control of unbound materials and their experiences with different non-nuclear devices considered in this synthesis. SURVEY OVERVIEW A survey questionnaire was prepared and distributed to the materials/geotechnical engineers from all state DOTs and the Ontario Ministry of Transportation in Canada.
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16 use of intelligent compaction, only two state DOTs (Indiana and Minnesota) have actually implemented its use in field projects.
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18 are the most evaluated and used devices among respondents. These evaluations were done through research conducted in house, as well as by universities and consultants.
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20 Device Ease of use Calibration Testing time Clegg Hammer DCP GeoGauge LWD (4)
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21 Device Level of Expertise Cost Durability Clegg Hammer DCP GeoGauge LWD (2)
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22 Device Accuracy Repeatability Recommendation Clegg Hammer DCP GeoGauge LWD (2)
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24 Device Accuracy Repeatability Ease of use Speedy Moisture Tester Field Microwave (3)
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