Effect of interlayer cold joint on mechanical properties and permeability of roller compacted concrete

Basit Öğe Kaydı
dc.authorid0000-0003-0326-5015
dc.contributor.authorBayqra, Sultan Husein
dc.contributor.authorOzen, Suleyman
dc.contributor.authorMardani, Ali
dc.contributor.authorRamyar, Kambiz
dc.date.accessioned2026-02-08T15:15:00Z
dc.date.available2026-02-08T15:15:00Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractOne issue with layer application of roller compacted concrete (RCC) is the development of cold joints, which can cause damage to RCC structures. In this study, fly ash was used in place of 0%, 20%, 40%, and 60% of the cement or aggregate to examine the impact of interlayer cold joint formation on RCC mixtures. To promote cold joint formation, the second layer was placed and compacted with a delay of 0, 60, 120, or 180 min after the first layer. Three methods were tried for preventing cold joints from forming: one was to apply a bedding mortar to the interlayer, another was to add a set retarder admixture, and the third was to spray an adhesion-enhancing chemical additive on the surface of the first layer. Based on the 28 d specimens' compressive and splitting-tensile strengths as well as the depth of water penetration under pressure, the most effective method was found to be applying interlayer bedding mortar. Considering 180 min delayed layer castings, the splitting-tensile and compressive strengths of the control samples decreased by 31% and 17%, respectively, while the strengths of mixtures applying interlayer bedding mortar decreased by 9% and 10%. In addition, bedding mortar treatment decreased the water permeability by 59% compared to the control. Interlayer cold joint decreased all mixtures' moduli of elasticity, regardless of the age of the specimens. When the interlayer delay was 60 min, the modulus of elasticity decreased by 1%-4%. It was between 2% and 14%, and between 10% and 24% at 120 and 180 min for the interlayer delay. The longer the delay in placing the second RCC layer, the more detrimental the effect of the cold joint. This effect was most noticeable on mechanical and permeability properties tested with applied load or water pressure parallel to the cold joint, such as flexural and splitting tensile strengths and water penetration depth under pressure.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [217M408]; Bursa Uludag University Science and Technology Centre (BAP) [(MH)-2016/16]
dc.description.sponsorshipThe authors gratefully acknowledge the support of the Scientific and Technological Research Council of Turkey (TUBITAK) (No. 217M408), and the Bursa Uludag University Science and Technology Centre (BAP) (No. AYP (MH)-2016/16). Special thanks are extended to Polisan Construction Chemicals Company and Bursa-Beton Ready Mixed Concrete authorities for their invaluable assistance in supplying cement, aggregate, set-retarding admixture, adhesion-enhancing chemical admixture, and water-reducing admixture, as well as for determining their roperties.
dc.identifier.doi10.1007/s11709-025-1145-z
dc.identifier.endpage299
dc.identifier.issn2095-2430
dc.identifier.issn2095-2449
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85213991164
dc.identifier.scopusqualityQ1
dc.identifier.startpage284
dc.identifier.urihttps://doi.org/10.1007/s11709-025-1145-z
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5559
dc.identifier.volume19
dc.identifier.wosWOS:001389764900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherHigher Education Press
dc.relation.ispartofFrontiers of Structural and Civil Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectroller compacted concrete
dc.subjectcold joint
dc.subjectmechanical properties
dc.subjectpermeability properties
dc.subjectfly ash
dc.titleEffect of interlayer cold joint on mechanical properties and permeability of roller compacted concrete
dc.typeArticle

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