Performance evaluation of fly ash/slag based geopolymer concrete beams with addition of lime

Kalaivani, M.; Guruvare, Shyamala; Ramesh, S.; Angusenthil, K.; Jagadeesan, R.

doi:10.1016/j.matpr.2020.01.596

Cited by 24 publications

(11 citation statements)

References 5 publications

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“…In recent times, substantial advances regarding the improvement of properties of FA based geopolymers have been made and one of the promising additives is GGBFS [5]. Therefore, fly ash in combination with GGBFS based geopolymer concrete may be considered to a suitable alternative for conventional concrete when exposed to adverse environments [6]. The addition of GGBFS with fly ash significantly increases the compressive strength of geopolymer concrete by contributing extra CaO to the geopolymer matrix and thus producing C-S-H/C-A-S-H gels [7,8].…”

Section: Introductionmentioning

confidence: 99%

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

Mustakim

Das

Mishra

et al. 2020

Silicon

111

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In this study, the effect of nano-silica (NS) and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated. Five mixtures of each containing 0.5%, 1.0%, 1.5%, 2.0% and 2.5% NS and SF are prepared for this investigation. The optimum GPC mixture with NS resulted in compressive strength of 63 MPa and the SF modified GPC achieved a compressive strength of 59.59 MPa after 28 days of outdoor temperature curing (Avg. temp. 31.4 ). The hardened concrete samples are analyzed through X-ray diffraction (XRD), X-ray fluorescence (XRF), field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), and petrographic examination, for the better understanding of geopolymer mineralogy, mechanism and microstructure. Results indicate that both NS and SF facilitated a higher degree of geopolymerization, leading to the densification of the geopolymer matrix which led to the improvement of the properties of FA-GGBFS based GPC.

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Section: Introductionmentioning

confidence: 99%

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

Mustakim

Das

Mishra

et al. 2020

Silicon

111

View full text Add to dashboard Cite

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“…As the result the load carrying capacity of the beam increased by 28.33% when compared to standard specimen. On comparison with standard specimen the stiffness characteristics of beam also increased about 38.77% [81]. Shreyas attempted to strength characteristic study of sustainable concrete mix with GGBS incorporation as a partial replacement of cement.…”

Section: Ground Granulated Blast Furnace Slagmentioning

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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“…The progression of geopolymer innovation comes from significant examination tries pointed toward making elective covers from minimal expense with modern side-effects. These covers show properties practically identical to or even better than those of customary concrete folios [1,5,6]. It's generally recognized that the most restricting part of conventional Portland concrete is calcium silicate hydrate (CSH) [7].…”

Section: Introductionmentioning

confidence: 99%

GGBFS and Red-Mud based Alkali-Activated Concrete Beams: Flexural, Shear and Pull-Out Test Behavior

Al-Jabali,

El-Latief,

Ezz

et al. 2024

Civ Eng J

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Geopolymers and antacid-enacted fasteners have accumulated critical interest as promising development and fixing materials because of their exceptional properties. Also, they bring about less contamination contrasted with regular concrete cements. Geopolymers address a clever class of suggested restricting materials blended through the basic enactment of bountiful aluminosilicate materials. The usage of geopolymer materials from side effects offers a critical decrease in carbon impression and yields positive natural effects. Geopolymer is progressively recognized as a plausible substitute for OPC concrete. In this review, sodium-based antacid activators, especially sodium metasilicate (Na2SiO3), were used for different blend extents. The boundaries researched included NaOH arrangements with a grouping of 8 M, alongside a Na2SiO3/NaOH proportion of 1. This paper evaluates the fundamental characteristics of geopolymer cement beams, employing red mud and GGBFS in powdered form as complete replacements for traditional concrete. Six bar specimens are tested under a two-point static loading condition, all cured at room temperature under ambient conditions. Of the six beams, three were exposed to flexural conduct testing with a molarity of 8 M, while the excess three beams were tried for shear conduct. The outcomes of testing geopolymer beams subjected to shear and bending loads indicated that the beams incorporating aluminum slag performed better than those incorporating blast furnace slag. Both types also demonstrated promising results compared to beams incorporating OPC, highlighting their potential environmental benefits compared to cement use. Doi: 10.28991/CEJ-2024-010-05-09 Full Text: PDF

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Performance evaluation of fly ash/slag based geopolymer concrete beams with addition of lime

Cited by 24 publications

References 5 publications

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica

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

GGBFS and Red-Mud based Alkali-Activated Concrete Beams: Flexural, Shear and Pull-Out Test Behavior

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