An Evaluation of the Consolidation Monitoring Device, HR-1013, 1978

(1978) An Evaluation of the Consolidation Monitoring Device, HR-1013, 1978. Transportation, Department of

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Abstract

The Iowa Department of Transportation research project HR-1013 is the evaluation of a prototype continuous monitoring nuclear density unit. The Unit, the Consolidation Monitoring Device (CMD), mounts on the rear of a slip-form paver and measures the density of the concrete while still in the plastic state. The evaluation performed determined the usefulness, accuracy, precision and reproducibility of the unit. The CMD was calibrated and tested in the laboratory for one week before field evaluation. The field evaluation consisted of monitoring at least 5 miles of paving and then correlating the CMD data with two conventional density methods. The two supplemental methods were density measurement with a Troxler nuclear gauge and densities obtained from core samples.

Item Type: Departmental Report
Keywords: Cores (Specimens), Evaluation and assessment, Laboratory tests, Monitoring, Nuclear density gages, Slip form pavers
Subjects: Transportation > Pavements
Transportation
Transportation > Roads and highways
Transportation > Research
Transportation > Design and Construction
Transportation > Maintenance and preservation
ID Code: 17296
Deposited By: Iowa DOT Library
Deposited On: 30 Jun 2014 12:37
Last Modified: 29 Jan 2015 21:09
URI: http://publications.iowa.gov/id/eprint/17296