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Accession Number
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PB2013-102480
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Title
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Comparison of Optical Gradation Analysis Devices to Current Test Methods. Executive Summary Report.
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Publication Date
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Apr 2012
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Media Count
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2p
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Personal Author
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A. Rajagopal
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Abstract
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The present study was taken up in two phases. Phase-1 focused on a review of devices pertaining to gradation (ASTM C136) tests. The study identified six optical devices. One of them, Computerize Particle Analyzer (CPA) developed by Haver and Boecker became available for investigation. CPA is a photo-optical device which uses 2-dimensional images for measuring the particle size distribution and shape of all dry bulk materials between 40mincrons and 36mm. 46 aggregate samples (sand sized to 25 mm) comprising of limestone, gravel and slag were collected from various sources in Ohio.
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Keywords
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Computerized particle analyzer
Computerized Particle Analyzer (CPA)
Existing technology
Gradation analysis
Laboratory evaluation
Optical devices
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Source Agency
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Federal Highway Administration
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NTIS Subject Category
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46C - Optics & Lasers
49E - Optoelectronic Devices & Systems
50A - Highway Engineering
50C - Construction Equipment, Materials, & Supplies
62 - Computers, Control & Information Theory
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Corporate Author
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Ohio Dept. of Transportation, Columbus. Office of Research and Development.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1303
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Contract Number
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N/A
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