Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Determination of Asphalt Content in Hot Bituminous Mixes with a Portable Nuclear Asphalt Content Gauge
The study was initiated as a preliminary evaluation of a portable nuclear gauge developed to accurately determine the asphalt content of hot bituminous concrete. The unit was developed under research contract with Nuclear Chicago Corporation, Chicago, Illinois, to requirements set forth by the Pennsylvania Department of Highways. Statistics involved in the random decay of the source and the background count previously had tended to place a limit on sensitivity of nuclear devices. This was usually on the order of plus or minus 0.25 percent of actual content. The sensitivity of the Nuclear Chicago gauge, however, was shown in the study to be much better than this, using initial calibration results. Samples of hot bituminous concrete were prepared to develop an initial system calibration. Mixes were tested with the nuclear gauge and the nuclear test results were then paired with actual design asphalt content to yield a regression curve. Standard deviations were computed and, at times, results compared to Immerex Extraction results for the same samples. (Author)
Determination of Asphalt Content in Hot Bituminous Mixes with a Portable Nuclear Asphalt Content Gauge
The study was initiated as a preliminary evaluation of a portable nuclear gauge developed to accurately determine the asphalt content of hot bituminous concrete. The unit was developed under research contract with Nuclear Chicago Corporation, Chicago, Illinois, to requirements set forth by the Pennsylvania Department of Highways. Statistics involved in the random decay of the source and the background count previously had tended to place a limit on sensitivity of nuclear devices. This was usually on the order of plus or minus 0.25 percent of actual content. The sensitivity of the Nuclear Chicago gauge, however, was shown in the study to be much better than this, using initial calibration results. Samples of hot bituminous concrete were prepared to develop an initial system calibration. Mixes were tested with the nuclear gauge and the nuclear test results were then paired with actual design asphalt content to yield a regression curve. Standard deviations were computed and, at times, results compared to Immerex Extraction results for the same samples. (Author)
Determination of Asphalt Content in Hot Bituminous Mixes with a Portable Nuclear Asphalt Content Gauge
R. L. Grey (Autor:in)
1967
16 pages
Report
Keine Angabe
Englisch
Determination of asphalt content in hot bituminous mixes with portable nuclear asphalt content gage
| Engineering Index Backfile | 1968
Bituminous mixes prepared with foamed asphalt
| TIBKAT | 1960
Correlation between asphalt content and neutron scattering data in bituminous pavement mixes
| Engineering Index Backfile | 1966
Nuclear Asphalt Content Gauge Study
| NTIS | 1988
The Nuclear Asphalt Content Gauge
| Online Contents | 1995