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dc.contributor.authorKozul, Rozalija
dc.contributor.authorDarwin, David
dc.date.accessioned2016-03-04T21:20:30Z
dc.date.available2016-03-04T21:20:30Z
dc.date.issued1997-06
dc.identifier.citationKozul, R. and Darwin, D., "Effects of Aggregate Type, size, and Content on Concrete Strength and Fracture Energy," SM Report No. 43, University of Kansas Center for Research, Inc., Lawrence, Kansas, June 1997, 98pp.en_US
dc.identifier.urihttp://hdl.handle.net/1808/20457
dc.description.abstractThe effects of aggregate type, size, and content on the behavior of normal and high-strength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and coarse aggregate contents with aggregate volume factors (ACI 211.1-91) of0.75 and 0.67. Water-to-cementitious material ratios range from 0.24 to 0.50. Compressive strengths range from 25 MPa (3,670 psi) to 97 MPa (13,970 psi). Compression test results show that high strength concrete containing basalt produces slightly higher compressive strengths than high-strength concrete containing limestone, while normal-strength concrete containing basalt yields slightly lower compressive strengths than normal-strength concrete containing limestone. The compressive strength of both normal and high-strength concrete is little affected by aggregate size. High-strength concrete containing basalt and normal-strength concrete containing basalt or limestone yield higher compressive strengths with higher coarse aggregate contents than with lower coarse aggregate contents. The compressive strength of high-strength concrete containing limestone is not affected by aggregate content. Flexure test results show that high-strength concrete containing basalt yields higher flexural strengths than concrete with similar compressive strength containing limestone. The flexural strength of high-strength concrete containing limestone is limited by the strength of the rock and the matrix. The flexural strength of highstrength concrete containing basalt is controlled by the strength of the rock and the interfacial strength at the matrix-aggregate interface. The flexural strength of normalstrength concrete containing the basalt or limestone used in this study is not affected by aggregate type, and is limited by the matrix strength and the strength of the interfacial transition zone. The flexural strength of normal and high-strength concrete is not affected by aggregate size. Normal and high-strength concretes containing basalt yield higher flexural strengths with higher coarse aggregate contents than with lower coarse aggregate contents. Fracture energy test results show that normal and high-strength concretes containing basalt yield significantly higher fracture energies than concretes containing limestone. The fracture energy of high strength concrete decreases with an increase in aggregate size, while the fracture energy of normal-strength concrete increases with an increase in aggregate size. High-strength concrete containing basalt and normalstrength concrete containing limestone yield higher fracture energies with higher coarse aggregate content than with lower coarse aggregate contents. The fracture energy of high-strength concrete containing limestone and normal-strength concrete containing basalt is not affected by aggregate content. There is no well-defmed relationship between fracture energy and compressive strength, or fracture energy and flexural strength. However, there is a close relationship between the peak bending stresses obtained in the flexure and fracture tests.en_US
dc.publisherUniversity of Kansas Center for Research, Inc.en_US
dc.relation.ispartofseriesSM Report;43
dc.relation.isversionofhttps://iri.ku.edu/reportsen_US
dc.subjectAggregatesen_US
dc.subjectCompressionen_US
dc.subjectConcreteen_US
dc.subjectCracking (fracturing)en_US
dc.subjectFlexureen_US
dc.subjectFracture energyen_US
dc.subjectFracture mechanicsen_US
dc.subjectHigh-strength concreteen_US
dc.subjectStrengthen_US
dc.subjectTensionen_US
dc.subjectTestsen_US
dc.titleEffects of Aggregate Type, Size, and Content on Concrete Strength and Fracture Energyen_US
dc.typeTechnical Report
kusw.kuauthorDarwin, David
kusw.kudepartmentCivil/Environ/Arch Engineeringen_US
dc.identifier.orcidhttps://orcid.org/0000-0001-5039-3525
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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