Investigation of Self-Compacting Concrete by Using Fracture Mechanics Methods

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Show simple item record Kursat Esat Alyamac; Fırat University Ragip Ince; Fırat University 2013-06-07 05:09:58 2013-07-15T11:43:05Z 2015-11-23T16:04:35Z 2013-07-15T11:43:05Z 2015-11-23T16:04:35Z 2013-07-15
dc.description.abstract Over a century, concrete has been used as a construction material all over the world, andits application areas increases and becomes commonplace each day. SCC is a special concretetype which places itself in densely-equipped narrow and deep sections with its own weight,tightens without any vibrations, has high resistance or durability characteristics andperformances, and has a very fluid- consistency. Fracture Mechanics researches defects that increase stress concentration such as notch, crack and flaws in the material and the damages occurring in relation to these defects. Therefore, a cracked construction could be analyzedonly by using fracture mechanics methods, that is, by determining fracture parameters realistically. Fracture parameters are among the most important characteristics of hardenedconcrete. In this study, SCC was investigated via the two-parameter fracture model whichneeds two fracture parameters namely: the critical stress intensity factor KIcs and the criticalcrack mouth opening displacement CTODc to characterize failure of concrete structures. InSCC mix, silica fume, fly ash and marble powder were used as powder materials. Sincephysical characteristics of the powder materials used are different, fresh concretecharacteristics of the series display differences. Water curing was applied to all the concretespecimens. Although concrete mix ratio and storage conditions of all series are the same,powder admixture type affected concrete compressive strength. It is known that there is aclose relation between concrete compressive strength and fracture parameters. Based onmaximum loads of SCC specimens produced with different powder materials, critical stressintensity factor KIcs and critical crack tip opening displacement CTODc, fracture parameterswere determined. Consequently, it was observed that concrete compressive strength andpowder admixture type are effective on fracture parameters of concrete.
dc.format application/pdf
dc.language en
dc.publisher International Balkans Conference on Challenges of Civil Engineering
dc.rights Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference.<br /> <strong>b)</strong> Authors are able to waive the terms of the CC license and enter into separate, additional contractual arrangements for the non-exclusive distribution and subsequent publication of this work (e.g., publish a revised version in a journal, post it to an institutional repository or publish it in a book), with an acknowledgement of its initial presentation at this conference.<br /> <strong>c)</strong> In addition, authors are encouraged to post and share their work online (e.g., in institutional repositories or on their website) at any point before and after the conference.
dc.source International Balkans Conference on Challenges of Civil Engineering; 1st International Balkans Conference on Challenges of Civil Engineering
dc.subject Fracture mechanics; Two-parameter model; Self-compacting concrete; Fly ash; Marble powder
dc.title Investigation of Self-Compacting Concrete by Using Fracture Mechanics Methods
dc.type Peer-reviewed Paper

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  • BCCCE 2011
    1st International Balkans Conference on Challenges of Civil Engineering

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