Strength and elastic properties of structural lightweight concretes

Koçkal, Niyazi Uğur; Özturan, Turan

doi:10.1016/j.matdes.2010.12.053

Cited by 123 publications

(45 citation statements)

References 14 publications

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“…The compressive strength will not be affected by self curing when the required amount of prewetted lightweight aggregate is used in the concrete [18,19]. However, weaker LWA as self curing agent in concrete might reduce the strength [20]. Figure 3.b shows that the trend in compressive strength for the SCSCC with FAA as self curing agent at 7 & 28 days is similar to that of the SCSCC with LECA.…”

Section: Fresh Properties Of Self Compacting Self Curing Concretementioning

confidence: 99%

“…Both natural and artificial lightweight aggregates exhibiting a considerable internal porosity may be used as reservoirs for self curing water in concrete. Self curing can be carried out by partially replacing conventional fine aggregate with saturated lightweight aggregate and water soluble chemicals [15,20]. The water soluble chemicals enhance the self curing by reducing water evaporation during hardening of concrete.…”

Section: Introductionmentioning

confidence: 99%

“…Strength properties were not affected by self curing when adequate amounts of prewetted LWA were used [18,19]. However, the use of a weaker LWA as self curing agent resulted in a lower compressive strength [20]. Being spherical in shape, the LECA and FAA improve rheological properties of fresh concrete mixes, and can enhance mechanical properties of the SCSCC [13,21].…”

Section: Introductionmentioning

confidence: 99%

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Samozbijajući beton s unutarnjom njegom i lakim agregatom

2016

JCE

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Self compacting self curing concrete with lightweight aggregatesThe self compacting self curing concrete made by partially replacing fine aggregate with the light expanded clay aggregate and fly ash aggregate is described in the paper. At that, maximum 25 % of fine aggregate (measured by volume) was replaced. Fresh concrete properties and mechanical properties of self compacting self curing concrete were analysed. Test results indicate that all mixes satisfied the self compacting properties of concrete. Furthermore, the concrete mix with 15 % of expanded clay and the mix with 15 % of fly ash exhibited greater strength under self curing conditions, when compared to the control mix and other mixes. Samozbijajući beton s unutarnjom njegom i lakim agregatom U radu je opisan samozbijajući beton s unutarnjom njegom proizveden djelomičnom zamjenom sitnozrnatog agregata laganim agregatom od ekspandirane gline i agregatom od letećeg pepela. Ispitana su svojstva betona u svježem stanju i mehanička svojstva samozbijajućeg betona, pri čemu je najviše 25 % agregata (volumenski) zamijenjeno. Rezultati ispitivanja pokazuju da su sve mješavine zadovoljile zahtjeve za samozbijajući beton. Osim toga, mješavina s 15 % agregata od ekspandirane gline i mješavina s 15 % agregata od letećeg pepela postižu veću čvrstoću pri uvjetima unutarnje njege u usporedbi s čvrstoćama koje su postigle kontrolna mješavina i ostale mješavine.

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Section: Fresh Properties Of Self Compacting Self Curing Concretementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Samozbijajući beton s unutarnjom njegom i lakim agregatom

2016

JCE

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“…The minimum 28-day splitting tensile strength of structural lightweight concrete is 2.0 MPa [28]. Although the using of OPBC in concrete is expected to reduce the splitting tensile strength of concrete due the weaker grain in OPBC aggregates [29], OPBC concrete is still found to be suitably used as structural lightweight concrete.…”

Section: Splitting Tensile Strengthmentioning

confidence: 99%

Lightweight Concrete Using Oil Palm Boiler Clinker (OPBC) – A Review

Hartono

Chai

Lee

2016

MATEC Web of Conferences

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Abstract. Lightweight concrete can be effectively produced by replacing normal aggregates (60% to 75% of concrete volume) with a lighter alternative. With depleting natural resources, utilising waste materials, such as oil palm boiler clinker (OPBC), in concrete for structural use is one way to mitigate environmental concerns raised by the construction industry. This paper presents a review of the mechanical properties, structural behaviour and performance of OPBC concrete. Lightweight concrete using OPBC can be designed to achieve different compressive strengths with different mixes. The different OPBC concrete mixes result in different densities and workability. The degree of content and the type of OPBC substitutes used affect the flexural strength and 28-day splitting tensile strength of OPBC concrete. A different effect was observed in the modulus of elasticity as the drying shrinkage and water absorption of OPBC concrete are also impacted. This review study also compares the structural performance of OPBC concrete to that of conventional concrete.

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“…8. The recycled foam is normally weaker than the geopolymer matrix and the increased amount thus reduced the strength of geopolymer lightweight concrete [7,[40][41][42]. The density decreased with the increase in RF content as the density of RF was only 215 kg/m 3 compared with that of geopolymer concrete of 2030 kg/m 3 .…”

Section: Foam Contentmentioning

confidence: 99%