Improvement of Device (CMD) for Monitoring the Consolidation of Plastic Concrete

Kirby, George J.; Lusignea, Richard W.; Foster-Miller Associates

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Improvement of Device (CMD) for Monitoring the Consolidation of Plastic Concrete

1981-08-01
By Kirby, George J. ; Lusignea, Richard W.

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English

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Details:

Creators:

Kirby, George J. ; Lusignea, Richard W.

Kirby, George J. ; Lusignea, Richard W. Less -
Corporate Creators:

Foster-Miller Associates
Contributors:

Mitchell, Terry M.
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration. Offices of Research and Development
Subject/TRT Terms:

[+]

Concrete Tests Consolidation Fresh Concrete Instruments For Measuring Density Nuclear Gages
Publication/ Report Number:

FHWA-RD-81-117
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Mitchell, T.M.
Corporate Publisher:

United States. Department of Transportation. Federal Highway Administration. Offices of Research and Development
Abstract:

This report describes a program to develop an automatic distance gauging system for use in a device (CMD) for monitoring the consolidation of a portland cement concrete pavement. The capacitive distance gauging system measures the air gap between the surface of the pavement and the bottom of a gamma backscatter instrument for density monitoring. The incorporation of the capacitance gauging system has successfully made the density measurement independent of air gap height variations normally encountered as the concrete pavement surface is extruded behind a paving machine. Laboratory and field testing programs are described, and recommendations are made for further development and application of the density monitoring system.
Format:

PDF
Funding:

DOT-FH-11-9630
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha-512:fd4e19348e028753178e2a45f9ad9addc09bf2457e6d22d3259f87e278f61d29a284d48ce2625e6376a8539036093155778287de6958a11ed67ddf5bc6329a09
Download URL:

https://rosap.ntl.bts.gov/view/dot/74693/dot_74693_DS1.pdf
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Improvement of Device (CMD) for Monitoring the Consolidation of Plastic Concrete

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