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dc.contributor.authorSkripkiūnas, Gintautas
dc.contributor.authorKičaitė, Asta
dc.contributor.authorJustnes, Harald
dc.contributor.authorPundienė, Ina
dc.date.accessioned2021-04-19T03:16:11Z
dc.date.available2021-04-19T03:16:11Z
dc.date.created2021-03-26T07:31:35Z
dc.date.issued2021
dc.identifier.issn1996-1944
dc.identifier.urihttps://hdl.handle.net/11250/2738215
dc.description.abstractThe effect of calcium nitrate (CN) dosages from 0 to 3% (of cement mass) on the properties of fresh cement paste rheology and hardening processes and on the strength of hardened concrete with two types of limestone-blended composite cements (CEM II A-LL 42.5 R and 42.5 N) at different initial (two-day) curing temperatures (−10 °C to +20 °C) is presented. The rheology results showed that a CN dosage up to 1.5% works as a plasticizing admixture, while higher amounts demonstrate the effect of increasing viscosity. At higher CN content, the viscosity growth in normal early strength (N type) cement pastes is much slower than in high early strength (R type) cement pastes. For both cement-type pastes, shortening the initial and final setting times is more effective when using 3% at +5 °C and 0 °C. At these temperatures, the use of 3% CN reduces the initial setting time for high early strength paste by 7.4 and 5.4 times and for normal early strength cement paste by 3.5 and 3.4 times when compared to a CN-free cement paste. The most efficient use of CN is achieved at −5 °C for compressive strength enlargement; a 1% CN dosage ensures the compressive strength of samples at a −5 °C initial curing temperature, with high early strength cement exceeding 3.5 MPa but being less than the required 3.5 MPa in samples with normal early strength cementen_US
dc.language.isoengen_US
dc.publisherMDPI
dc.rightsCC BY 4.0*
dc.rights.urihttp://creativecommons.org/licenses /by/4.0/*
dc.subjectCalcium nitrateen_US
dc.subjectPortland–limestone cementen_US
dc.subjectLow temperatureen_US
dc.subjectSetting timeen_US
dc.subjectCompressive strengthen_US
dc.titleEffect of Calcium Nitrate on the Properties of Portland– Limestone Cement‐Based Concrete Cured at Low Temperatureen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2021 The authors
dc.subject.nsiVDP::Teknologi: 500en_US
dc.source.volume14en_US
dc.source.journalMaterialsen_US
dc.source.issue7en_US
dc.identifier.doi10.3390/ma14071611
dc.identifier.cristin1901199
dc.source.articlenumber1611en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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