Investigations on rheological and mechanical properties of self-compacting concrete (SCC) containing 0.6 μm eggshell as partial replacement of cement

Zain, Mustaffa Mohamed; Lian, Oh Chai; Lee, Siong Wee

doi:10.1016/j.conbuildmat.2021.124539

Cited by 16 publications

(3 citation statements)

References 17 publications

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“…According to experimental results, Eurocode2 is comparable to the flexural strength of eggshell-filled SCC beams. In most instances, the crack width was less than the limit for Eurocode 2 crack control [37]. Self-Compacting Concrete (SCC) is a relatively new kind of concrete that has excellent workability, a lot of paste, and contains components that can substitute cement, like slag, natural pozzolana, and silica fume.…”

Section: Status Of Self-compacting Concrete (Scc)mentioning

confidence: 99%

An Investigation on Eco Friendly Self-Compacting Concrete Using Spent Catalyst and Development of Structural Elements

R.,

Al-Balushi,

Kaleem

2023

Civ Eng J

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The theme of this initiative is "Waste to Wealth." Construction materials, particularly concrete, need to have better qualities, including strength, rigidity, durability, and ductility, because Oman's construction industry is expanding. Self-compacting concrete (SCC) has more benefits than regular concrete, including better workability. The major focus of this study is the C30-grade SCC for the control mix, spent catalyst (zeolite catalyst)-based SCC, and the development of the RC beam's flexural behavior employing control and spent catalyst-based SCC. The preliminary study and the main study are the two study outcomes included in this project. Preliminary research involves creating four mixtures with various dosages of 3%, 6%, 9%, and 12% in order to optimize spent catalyst in C30 grade concrete. All of the cubes undergo a 28-day curing test. The cubes' compressive strength is tested in order to establish the ideal dosage, which is 9%. Develop a C30 grade control modified design mix in accordance with SCC and optimize chemical admixtures such as superplasticizer (SP) at different dosages, like 2, 2.5, 3, and 3.5%, using various trials and tests (slump flow, L-box, J-ring, V-funnel, and U-box tests), as well as the optimized dosage of spent catalyst (SC). The main study includes six singly reinforced RC beams with dimensions of 750 (L)×100 (B)×150 mm (D) that were cast and tested in the laboratory. After a 28-day curing period, two specimens were placed under a two-point loading setup, with the remaining two samples receiving the optimum dosages of spent catalyst and superplasticizer. All of the beams were tested using a Universal Testing Machine (UTM) with a 1000 kN capability. From the preliminary study, partial substitution of cement in control concrete of grade C30 using spent catalyst (SC), it was found that the 9% optimum dosage produces greater compressive strength compared to other doses, which are almost 10% rises at 28 days of curing period. Based on a different test, it was discovered that the optimum dose of 3% SP gave closer agreement and satisfied the need for SCC as per the BS standard. The load-carrying capability of the SCC beams is almost 21.7% higher than that of the control beams. Comparing the SCC beams to the control beams, their deflection was reduced by about 26% at the same load level, and their ductility rose by almost 33%. Comparatively to the control beam, the stiffness of 21.6% of SCC also rises. According to test results, the SCC beam performs better in every way when superplasticizer and spent catalyst are used at the recommended dosage. Doi: 10.28991/CEJ-2023-09-05-08 Full Text: PDF

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Section: Status Of Self-compacting Concrete (Scc)mentioning

confidence: 99%

An Investigation on Eco Friendly Self-Compacting Concrete Using Spent Catalyst and Development of Structural Elements

R.,

Al-Balushi,

Kaleem

2023

Civ Eng J

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“…In addition to the above discussed mineral admixtures, many other sources and new alternate cementitious materials are also available for possible usage in SCC. Rice husk ash [15], Ethylene Vinyl Acetate and steelmaking slag [16], Marble powder [17], Metakaolin (MK) and Alcofine (AL) and even egg shell [18]are some of the other available mineral admixtures to name a few. Use of MK in SCC is not an innovative one and has already been tried by many researchers.…”

Section: Application Of Other Industrial Wastes In Sccmentioning

confidence: 99%

“…Though the tensile properties improve on using such fibres, the flow properties and orientation of fibres may get affected due to steel fibres and many researchers have mentioned this effect and have tried with other non metallic fibres [38][39][40]. Luo et al [41] in their research, observed a decline in compressive strength due to steel fibres added at different volumes.…”

Section: Non-metallic and Natural Fibres In Sccmentioning

confidence: 99%

A comprehensive study on physico-mechanical properties of non-metallic fibre reinforced SCC blended with metakaolin and alcofine

Vivek

Karthikeyan

Selvaraj

et al. 2022

Mater. Res. Express

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This study presents a detailed experimental investigation on the effects incorporating non-metallic fibers in hybrid form in self-compacting concrete (SCC). In this regard SCC was prepared with Alccofine and Metakaolin as partial replacement for cement in 15% and 20% respectively along with the hybrid fibre combinations namely abaca fibres (0.25%, 0.5% & 0.75%), polypropylene fibres (0.5%, 1%, 1.5% & 2%) and glass fibres (0.5%, 1%, 1.5%, & 2%). The fresh properties of SCC with and without hybrid fibre combinations were assessed through the standard tests such as slump flow, J ring and V-funnel tests. The conventional mechanical tests such as compressive strength test, split tensile strength test and flexural strength test were performed at 7 and 28 days. The experimental results reveal that the fresh properties of SCC were highly influenced by alccofine and Metakaolin adopted in this research. Furthermore, that the hybrid combination of abaca with polypropylene and glass fibres improved the mechanical properties of SCC and in particular the mix with 1% glass fibre and 0.25% Abaca fibre had shown better flexural and tensile strength behaviour. Microstructure analyses were also done to confirm the improvement in mechanical properties. The Scanning Electron Microscope images of the mix with 1% glass fibre and 0.25% abaca fibre showed less voids presence and presence of more hydrated components conveying that the usage of hybrid fibres had restricted the propagation of cracks there by reducing the percentage of voids and the use of metakaolin and alcofine helping in forming hydrated components at earlier stage leading to better strength.

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Assessment of eggshell powder in natural fiber composite: a sustainable bio-concrete

Rajesh,

Hari Pritha,

Sumathi

2023

Biomass Conv. Bioref.

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Investigations on rheological and mechanical properties of self-compacting concrete (SCC) containing 0.6 μm eggshell as partial replacement of cement

Cited by 16 publications

References 17 publications

An Investigation on Eco Friendly Self-Compacting Concrete Using Spent Catalyst and Development of Structural Elements

An Investigation on Eco Friendly Self-Compacting Concrete Using Spent Catalyst and Development of Structural Elements

A comprehensive study on physico-mechanical properties of non-metallic fibre reinforced SCC blended with metakaolin and alcofine

Assessment of eggshell powder in natural fiber composite: a sustainable bio-concrete

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