Evaluation of mix ratios of light weight concrete using geopolymer as binder

Priyanka, Mukkala; Venkatesh, Chava; Syed, Habibunnisa

doi:10.1016/j.matpr.2021.12.140

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…Sand characteristics were evaluated using IS: 2386-1963. Coarse Aggregates (CA) with a maximum size of 12.5 mm and a specific gravity of 2.45, held at 10 mm, were locally sourced, employed, and conformed to Zone-II as per IS 383:2016 [28][29][30][31][32][33][34][35][36][37][38][39]. To examine the characteristics of light-expanded clay, ranging in size from 8 to 12 mm, evaluated according to IS-2386-PART-III-1963 [40] as shown in Tables 1 and 2.…”

Section: Methodsmentioning

confidence: 99%

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Ningampalli,

Rao,

Desai

2024

Journal of Sustainable Construction Materials and Technologies

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In the current research, an attempt was made to examine the flexural and cracking behavior of reinforced lightweight self-compacting concrete (LWSCC) beams incorporating light-expand- ed clay aggregate (LECA) as a partial replacement for natural coarse aggregate (NCA). Me- chanical properties such as compressive strength, split tensile strength, and flexural strength were evaluated, alongside fresh properties assessed using flow table, V-funnel, J-ring, and L-box tests. The study examined six beams, including a control mix, with LECA replacements of 5%, 10%, 15%, 20%, and 25%. The results indicate that compressive strength decreased with higher LECA content, from 44.56 MPa in the control mix to 32.73 MPa at 25% LECA. Flexural and split tensile strengths showed similar trends. Crack width increased with LECA content, from 1 mm in the control mix to 2 mm at 25% LECA, while density decreased. Flexur- al performance analysis revealed reduced ultimate load capacity and increased deflection with higher LECA proportions. The ductility index improved, suggesting enhanced flexibility. This study concludes that LECA can effectively replace NCA in LWSCC, though with a trade-off in strength and cracking behavior.

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Section: Methodsmentioning

confidence: 99%

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Ningampalli,

Rao,

Desai

2024

Journal of Sustainable Construction Materials and Technologies

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“…In the present study, the concrete sample's surface morphology and elemental composition were assessed using "Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy analyses (EDX) [42][43][44][45][46][47][48][49][50][51][52]. " The microstructure and elemental composition of the samples were analyzed using an SEM (Model: VEGA 3 Generation, TESCAN, Brno, Czech Republic) equipped with EDX spectroscopy (Model: EDAX-EDS-SSD, EDAX Inc., USA).…”

Section: Microstructural Propertiesmentioning

confidence: 99%

Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

Chava,

M.v.,

Munugala

et al. 2024

Journal of Sustainable Construction Materials and Technologies

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This study investigated the influence of mineral admixtures (fly ash, silica fume, metakaolin) and curing conditions (water immersion, polyethylene glycol, gunny bags, accelerated curing) on the properties of self-compacting concrete (SCC). The rheological properties, compressive strength, chloride penetration resistance, and microstructure were evaluated. Incorporating mineral admixtures improved the workability, strength (up to 53% increase), and durability of SCC compared to plain mixes, with 20% metakaolin replacement being optimal. Water immersion curing enhanced the compressive strength (3-15% increase) and chloride resistance (up to 30% decrease in migration coefficient) owing to improved hydration and microstructural refinement. Mineral admixtures reduced the sensitivity of SCC to curing method. Microstructural analysis showed higher density and additional C-S-H phases with mineral admixtures under wet curing. The study demonstrates that optimized SCC containing appropriate supplementary cementitious materials coupled with proper external curing can achieve high performance.

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“…One of the most important features of concrete is durability, which means its ability to avoid any deterioration over time. However, several factors may affect the concrete durability, such as the inclusion of any chemical in its contents and the presence of pores on its surface, which may help in rapidly reinforcing bars corrosion [79]. The durability of geopolymer concrete can be investigated in different ways, such as Rapid Chloride Permeability (RCP) test, absorption test, and water permeability test [80].…”

Section: Durabilitymentioning

confidence: 99%

Development Factors in Eco-Friendly Geopolymer Concrete - A State of the Art Review

Elkafrawy

Elsayed

Meleka

2022

ERJ. Engineering Research Journal

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The use of natural resources in different fields increases over time. Governments all over the world encourage all officials to achieve sustainability goals. Therefore, scientists developed geopolymer concrete as an alternative to ordinary cement-based concrete. The production process of one ton of cement is accompanied by emitting approximately one ton of carbon dioxide into the environment. Geopolymer concrete is free of cement and based on by-product materials, which increase the sustainability of structures.Consequently, it has considerable potential to become the future of green building materials due to its advantages in terms of mechanical properties and environmental benefits compared to conventional cementbased concrete. This paper summarizes a review of the development factors of geopolymer concrete and its applications. Moreover, it briefly exhibits the advantages and disadvantages of replacing Ordinary Portland Cement (OPC) concrete with newly developed geopolymer concrete. In addition, it reports a review of the mix design of geopolymer concrete. Furthermore, it helps the reader better understand the properties of fresh and hardened geopolymer concrete. It also outlines and concludes the effect of different components on binder properties through proposed flow charts. Several research studies on different structural elements made of geopolymer concrete are also presented and discussed. Finally, it provides some practical applications for using geopolymer concrete in construction.

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Evaluation of mix ratios of light weight concrete using geopolymer as binder

Cited by 10 publications

References 20 publications

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Flexural and cracking behavior of reinforced lightweight self-compacting concrete beams made with LECA aggregate

Effect of Mineral Admixtures and Curing Regimes on Properties of Self-Compacting Concrete

Development Factors in Eco-Friendly Geopolymer Concrete - A State of the Art Review

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