Bond Strength of Reinforcing Bars with Deformation Spacings that Exceed Maximum Specified in ASTM A615

Farshadfar, Omid; Ajaam, Ali Hussein; Hano, Muna; O’Reilly, Matthew; Darwin, David

dc.contributor.author	Farshadfar, Omid
dc.contributor.author	Ajaam, Ali Hussein
dc.contributor.author	Hano, Muna
dc.contributor.author	O’Reilly, Matthew
dc.contributor.author	Darwin, David
dc.date.accessioned	2016-01-29T20:44:23Z
dc.date.available	2016-01-29T20:44:23Z
dc.date.issued	2014-08
dc.identifier.citation	Farshadfar, O., Ajaam, A., Hano, M., O'Reilly, M., Darwin, D., "Bond Strength of Reinforcing Bars with Deformation Spacings that Exceed Maximum Specified in ASTM A615," SL Report 14-2, The University of Kansas Center for Research, Inc., Lawrence, KS, August 2014, 26 pp.	en_US
dc.identifier.uri	http://hdl.handle.net/1808/19819
dc.description.abstract	The bond strength of two sets of No. 7 reinforcing bars was evaluated in accordance with ASTM A944. One set satisfied the criterion for maximum deformation spacing specified in ASTM A615, while the other had deformations that exceeded the maximum spacing. All bars exceeded the requirements for minimum deformation height. Research related to the effect of deformation properties on bond strength, including the research used to establish the requirements for deformations in ASTM A615, is also reviewed. The test results match earlier research and demonstrate that (1) the bond strength of the bars with deformation spacings that exceed those specified in ASTM A615 is similar to the bond strength of the bars that meet the specification, and (2) the differences in bond strength observed in the tests are not statistically significant. The bars tested in this study with deformation spacings that exceed those specified in ASTM A615 will provide satisfactory bond performance and can be used in all concrete construction.	en_US
dc.publisher	University of Kansas Center for Research, Inc.	en_US
dc.relation.ispartofseries	SL Report;14-2
dc.relation.isversionof	http://iri.ku.edu/reports	en_US
dc.subject	Bond (concrete to reinforcement)	en_US
dc.subject	Deformed reinforcement	en_US
dc.subject	Relative rib area	en_US
dc.subject	Structural engineering	en_US
dc.title	Bond Strength of Reinforcing Bars with Deformation Spacings that Exceed Maximum Specified in ASTM A615	en_US
dc.type	Technical Report
kusw.kuauthor	Darwin, David
kusw.kudepartment	Civil/Environ/Arch Engineering	en_US
dc.identifier.orcid	https://orcid.org/0000-0001-5039-3525
kusw.oapolicy	This item does not meet KU Open Access policy criteria.
dc.rights.accessrights	openAccess

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