An Evaluation of the Troxler 3241-B Nuclear Asphalt Gauge, MLR-85-11, 1986

(1986) An Evaluation of the Troxler 3241-B Nuclear Asphalt Gauge, MLR-85-11, 1986. Transportation, Department of

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Abstract

The Troxler 3241-B Asphalt Content Gauge is intended for rapidly determining the bitumen content of bituminous paving mixtures. A 300 Millicurie Americuium 241: Beryllium source emitts neutrons which are affected by the hydrogen in the mix. The affected neutrons are detected by Helium 3 detectors, counted and computed into a percentage bitumen of the asphalt mix. The current methods of determining the bitumen content of bituminous paving mixtures requires the use of potentially hazardous chemicals and several hours of testing time. When extracted aggregates are not needed, determination of the bitumen content of a paving mixture by the nuclear method may be easier, quicker and potentially safer. The objective of the project is to study the accuracy of the Troxler 3241-B Nuclear Asphalt Content Gauge in measuring the asphalt cement (AC) content of asphalt concrete mixtures produced with different asphalt cements and different aggregates.

Item Type: Departmental Report
Keywords: Aggregates, Asphalt content, Bituminous mixtures, Nuclear tests, Troxler, Nuclear asphalt content gauge
Subjects: Transportation
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Research
Transportation > Research > Concrete
Transportation > Research > Asphalt
ID Code: 17141
Deposited By: Iowa DOT Library
Deposited On: 09 Jun 2014 12:28
Last Modified: 15 Jan 2015 12:41
URI: http://publications.iowa.gov/id/eprint/17141