Uporaba granitne prašine u samozbijajućem betonu

doi:10.14256/jce.1117.2014

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…Around 15% of aluminous compound in concrete ensures some pozzolanic reaction in concrete which may contribute to the compressive strength. The sum of ferric oxide, alumina and silica must be at least 70% in FA for possible use in concrete (Karmegam, 2014). The sum of these oxides in FA as well as MK, promises that it may be useful to increase the strength of SCC.…”

Section: Micro Structural Studymentioning

confidence: 99%

“…For determining the self compactability properties like filling ability, passing ability and segregation resistance the following tests such as slump flow, T50 time, J-ring flow, V-funnel flow times, L-Box blocking ratio, U-Box difference in height were performed. In order to minimize the effect of workability loss on variability of test results, fresh concrete properties were examined within a period of 20 minutes after mixing (Karmegam, 2014).…”

Section: Properties Of Fresh Concretementioning

confidence: 99%

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Mechanical and flexural performance of self compacting concrete with natural fiber

Kavitha

Venkatesan

Avudaiappan

et al. 2020

rdlc

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This paper investigates the effect of sisal fiber addition on fresh ,mechanical properties of self compacting concrete(SCC) and flexural performance of fiber reinforced RC beams made with mineral admixtures like Meta Kaolin (MK) and Fly Ash (FA)which is an industrial waste. The mixes were prepared by varying MK content from 5% to 15% with 5% increment with constant fly ash content of 30%. The results reveal that increasing the content of MK beyond 10% leads to reduction in strength. And also the negative influence of MK and fiber addition on workability performance was overcome by the addition of FA, super plasticizer and viscosity modifying agent (VMA). Based on the test results it is evidenced that FA and MK make use of mineral admixture in the production of SCC. It also clarifies that the addition of sisal fiber improves mechanical properties of concrete. The research work shows that the ultimate load of fiber reinforced RC beams was raised when compared to normal RC beams. The flexural toughness and ductility of concrete was found to increase appreciably when sisal fiber was added.

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Section: Micro Structural Studymentioning

confidence: 99%

Section: Properties Of Fresh Concretementioning

confidence: 99%

Mechanical and flexural performance of self compacting concrete with natural fiber

Kavitha

Venkatesan

Avudaiappan

et al. 2020

rdlc

View full text Add to dashboard Cite

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“…On the other hand, upto 15% of GSW can be utilized without the loss of compressive quality on account of their molecule size distribution and potential pozzolanic activity. The hydration and void filling nature of GSW causes the increase in density of concrete [27,41,54,56]. Khan utilized materials like dolomite, marble residue [73] in several portion of cement replacement with dolomite, fly ash and marble dust, the investigation is carried out for M30 grade of concrete [74] as a result compressive strength of the concrete in amplified, the optimum mix of 6% dolomite powder is shown in Fig.…”

Section: Quarry Finesmentioning

confidence: 99%

“…Compressive strength, flexural strength split tensile strength Aarthi K et al [56] Granite waste 10%, 20%, 30% Flexural strength Tawfik et al [57] Nano silica 0% to 35% Ultrasonic pulse velocity Jason et al [58] Recycled From the results it is concluded that the compressive strength in 28 days decreased by 21 MPa even at the addition of 2% CFRC, Hence there is no advantage of adding CFRC [68]. The soil tests with banana fiber content is experimented and it shows that the strengthened soil with 0.5% banana fiber content had its Unconfined Compressive Strength expanded by 1.8 MPs over the control soil.…”

Section: Synthetic Fibresmentioning

confidence: 99%

Impacts of nonconventional construction materials on concrete strength development: case studies

Guruvare¹,

Kumar²,

Olalusi

2020

SN Appl. Sci.

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Sustainable building technology is a new approach adopted in built environment, which is focused on significantly reducing impact of the construction industry on the environment. Moreover, the world is largely driving development of sustainable and smart products to mitigate global pollution issues. In this study, assessment of the impacts of using alternative constituents such as crumb rubber, coconut shell, recycled aggregate, GGBS, human hair, banana fiber, industrial sludge, saw dust, rice husk, wood waste, textile, copper slag, textile, glass powder, plastic etc., on concrete strength development using case studies has been performed. The paper explores the research work carried out towards sustainable approach in replacement of basic composition of concrete. It focuses on various waste materials used as a substitute options in concrete and characteristic strength development along with potential challenges. Leading researches relating to sustainable materials were also explored. The results show that the alternative aggregates, mostly with minimally usage of about 20% increased the compressive strength properties of concrete. Usage of fibres to about increased the flexural property of concrete and the replacement of waste sludge didn't show appreciable increased of compressive strength.

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Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

Prakash¹,

Divyah²,

Srividhya³

et al. 2022

Materials

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The construction industry relies heavily on concrete as a building material. The coarse aggregate makes up a substantial portion of the volume of concrete. However, the continued exploitation of granite rock for coarse aggregate results in an increase in the future generations’ demand for natural resources. In this investigation, coconut shell was used in the place of conventional aggregate to produce coconut shell lightweight concrete. Class F fly ash was used as a partial substitute for cement to reduce the high cement content of lightweight concrete. The impact of steel fiber addition on the compressive strength and flexural features of sustainable concrete was investigated. A 10% weight replacement of class F fly ash was used in the place of cement. Steel fiber was added at 0.25, 0.5, 0.75, and 1.0% of the concrete volume. The results revealed that the addition of steel fibers enhanced the compressive strength by up to 39%. The addition of steel fiber to reinforced coconut shell concrete beams increased the ultimate moment capacity by 5–14%. Flexural toughness was increased by up to 45%. The span/deflection ratio of all fiber-reinforced coconut shell concrete beams met the IS456 and BS 8110 requirements. Branson’s and the finite element models developed in this study agreed well with the experimental results. As a result, coconut shell concrete with steel fiber could be considered as a viable and environmentally-friendly construction material.

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Uporaba granitne prašine u samozbijajućem betonu

Cited by 3 publications

References 15 publications

Mechanical and flexural performance of self compacting concrete with natural fiber

Mechanical and flexural performance of self compacting concrete with natural fiber

Impacts of nonconventional construction materials on concrete strength development: case studies

Effect of Steel Fiber on the Strength and Flexural Characteristics of Coconut Shell Concrete Partially Blended with Fly Ash

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