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Article: Sphericity, shape factor, and convexity measurement of coarse aggregate for concrete using digital image processing

TitleSphericity, shape factor, and convexity measurement of coarse aggregate for concrete using digital image processing
Authors
Issue Date2000
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/cemconres
Citation
Cement And Concrete Research, 2000, v. 30 n. 3, p. 351-358 How to Cite?
AbstractA method of measuring the sphericity, shape factor, and convexity of coarse aggregate for concrete using digital image processing (DIP) is developed. Unlike other DIP methods, this method is capable of estimating the thickness and volume of the particles, and can thus be used to measure shape parameters dependent on thickness and to evaluate weighted mean values of the shape parameters of the individual particles in an aggregate sample. A total of 46 rock aggregate samples obtained from five different sources derived from three different types of rock have been analyzed by the method and the shape parameters so measured are correlated to the traditional measure of angularity with the hope of identifying shape parameters that may be used as direct measures of angularity. Several shape parameters are found to have good correlation with the traditional measure of angularity but among them, only the convexity ratio and fullness ratio may be used as measures of angularity. Lastly, it is advocated that the traditional measure of angularity in terms of packing density should be abandoned; packing density by itself is an important indicator of aggregate performance but is not a good measure of angularity.
Persistent Identifierhttp://hdl.handle.net/10722/150142
ISSN
2015 Impact Factor: 3.48
2015 SCImago Journal Rankings: 3.826
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMora, CFen_US
dc.contributor.authorKwan, AKHen_US
dc.date.accessioned2012-06-26T06:01:48Z-
dc.date.available2012-06-26T06:01:48Z-
dc.date.issued2000en_US
dc.identifier.citationCement And Concrete Research, 2000, v. 30 n. 3, p. 351-358en_US
dc.identifier.issn0008-8846en_US
dc.identifier.urihttp://hdl.handle.net/10722/150142-
dc.description.abstractA method of measuring the sphericity, shape factor, and convexity of coarse aggregate for concrete using digital image processing (DIP) is developed. Unlike other DIP methods, this method is capable of estimating the thickness and volume of the particles, and can thus be used to measure shape parameters dependent on thickness and to evaluate weighted mean values of the shape parameters of the individual particles in an aggregate sample. A total of 46 rock aggregate samples obtained from five different sources derived from three different types of rock have been analyzed by the method and the shape parameters so measured are correlated to the traditional measure of angularity with the hope of identifying shape parameters that may be used as direct measures of angularity. Several shape parameters are found to have good correlation with the traditional measure of angularity but among them, only the convexity ratio and fullness ratio may be used as measures of angularity. Lastly, it is advocated that the traditional measure of angularity in terms of packing density should be abandoned; packing density by itself is an important indicator of aggregate performance but is not a good measure of angularity.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/cemconresen_US
dc.relation.ispartofCement and Concrete Researchen_US
dc.titleSphericity, shape factor, and convexity measurement of coarse aggregate for concrete using digital image processingen_US
dc.typeArticleen_US
dc.identifier.emailKwan, AKH:khkwan@hkucc.hku.hken_US
dc.identifier.authorityKwan, AKH=rp00127en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0008-8846(99)00259-8en_US
dc.identifier.scopuseid_2-s2.0-0033722668en_US
dc.identifier.hkuros55979-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033722668&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume30en_US
dc.identifier.issue3en_US
dc.identifier.spage351en_US
dc.identifier.epage358en_US
dc.identifier.isiWOS:000087119100003-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridMora, CF=7102104647en_US
dc.identifier.scopusauthoridKwan, AKH=7101738204en_US

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