Performance of rice husk Ash-Based sustainable geopolymer concrete with Ultra-Fine slag and Corn cob ash

Saloni,; Parveen,; Pham, Thong M.; Lim, Yee Yan; Pradhan, Shashwati Soumya; Jatin,; Kumar, J. Sudheer

doi:10.1016/j.conbuildmat.2021.122526

Cited by 49 publications

(21 citation statements)

References 52 publications

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“…At all ages, sustainable geopolymer concrete with UFS outperformed RHA-based geopolymer concrete in terms of mechanical and durability. The results demonstrated that adding UFS to a geopolymer can improve its characteristics [70]. With the addition of UFS and greater RHA, the compressive strength of RHA geopolymer concrete is enhanced.…”

Section: Ultra-fine Slagmentioning

confidence: 92%

“…The particle size distribution of the ultra-fine slag along with corncob ash and rice husk ashes (RHA) is depicted in Fig. 15, which indicates that UFS has more finer particles with mean particle size of 4.4 µm as compared to RHA and corncob ash [70]. Ultra-fine slag helps in the early as well as final strength development of the concrete.…”

Section: Ultra-fine Slagmentioning

confidence: 99%

“…When compared to other replacements of UFS, the 20% replacement had a greater strength, due to the high CaO level in UFS, Fig. 13 Chemical composition of UFS [69][70][71][72][73][74] Table 1 Compressive strength of concrete containing USF [75] Compressive strength in N/mm 2 providing both pozzolanic and hydraulic reactivity, resulting in a denser pore structure and higher strength. As compared to control concrete mix, all UFS mixes demonstrated early-age strength and the ultimate strength of all the UFS concrete mixes were higher than that of PPC concrete.…”

Section: Ultra-fine Slagmentioning

confidence: 99%

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Agro-industrial-based wastes as supplementary cementitious or alkali-activated binder material: a comprehensive review

Blesson

Rao

2023

Innov. Infrastruct. Solut.

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An attempt to shed light on the use of agro-industrial-based wastes as supplementary cementitious material (SCM) or as alkali-activated binder (AAB) material is mainly focused in this review paper. The SCM or AAB acts as a suitable replacement for cement, as the cement manufacturing tends to contribute to 8–10% of global CO2 emissions. To gain acceptability in the construction industry, diverse agro-industrial-based wastes must demonstrate their potential as precursors in AAB or as SCM. The binder materials discussed among the agricultural wastes are rice husk ash, olive waste ash, and coconut-based waste ash, and the industrial wastes are ground granulated blast furnace slag, fly ash, and ultra-fine steel slag. The paper also analyses the effects of calcined and uncalcined agro-industrial-based wastes on pozzolanic properties of binder system. It is clear from the studies that the calcined wastes tend to provide greater reactivity compared to the uncalcined wastes, that helps in early strength development in the binder system. The review findings indicate that the agro-industrial-based wastes provide pozzolanic and hydraulic properties, thereby making them suitable as an AAB or as a SCM.

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Section: Ultra-fine Slagmentioning

confidence: 92%

Section: Ultra-fine Slagmentioning

confidence: 99%

Section: Ultra-fine Slagmentioning

confidence: 99%

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Agro-industrial-based wastes as supplementary cementitious or alkali-activated binder material: a comprehensive review

Blesson

Rao

2023

Innov. Infrastruct. Solut.

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“…The physical and chemical compositions of the ultrafine slag may be found from the previous study. 17 The chemical compositions of binder materials, that is, fly ash, RHA, metakaolin, bottom ash and ultrafine slag (as provided by the supplier), are presented in Table 1. Locally available coarse aggregate of three different sizes, that is, 7, 10, and 14 mm were used to prepare the mixes.…”

Section: Methodsmentioning

confidence: 99%

Effects of crumb rubber inclusion on strength, permeability, and acid attack resistance of alkali‐activated concrete incorporating different industrial wastes

Pradhan

Mishra

Biswal

et al. 2022

Structural Concrete

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This study examines the suitability of alternate binders and crumb rubber (CR) to produce light weight alkali-activated concrete (AAC). For this, strength, and durability performance of AAC incorporating CR by partially replacing fine aggregate was studied. To produce AAC, four different binders, including fly ash, rice husk ash (RHA), metakaolin, and bottom ash were used.Fine aggregates were substituted with CR at 0%, 10%, 20%, and 30% for each AAC mix (with different binders). Furthermore, the mixes were prepared using 12 M sodium hydroxide (NaOH) solution, and the ratio of sodium silicate (Na 2 SiO 3 ) to NaOH was taken as 2.5. The samples were cured at ambient temperature. Strength and durability properties, including permeability through water absorption and acid attack (hydrochloric acid [HCl] and sulfuric acid [H 2 SO 4 ]), were also checked. Results of this study revealed that the strength decreased with the increase in CR content. Further, this decrease was high at 30% replacement but strength was satisfactory. AAC showed good relationships among compressive, flexural, and split tensile strengths. Similar footprints were observed for permeability results. However, highest water absorption was observed for bottom ash binder (with 30% substitution of CR).Mixes with fly ash and metakaolin binders outperformed the other mixes while comparing the compressive strength of acid exposed samples. Overall, a sustainable and durable light weight AAC can be prepared using 20% CR.

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“…Many researchers studied the effect of replacing part of aluminosilicates in a geopolymer concrete mix with OPC. They found significant effects on the However, aluminosilicate reacts firstly with water for a while, then protective layers of calcium ions are formed, which stops the reaction between water and aluminosilicate [87]. After that, the aluminosilicate reacts with calcium hydroxide forming calcium silicate hydrate (CSH), which can be called a pozzolanic reaction due to aluminosilicate pozzolanic characteristics.…”

Section: Effect Of Opc In the Admixturementioning

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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Performance of rice husk Ash-Based sustainable geopolymer concrete with Ultra-Fine slag and Corn cob ash

Cited by 49 publications

References 52 publications

Agro-industrial-based wastes as supplementary cementitious or alkali-activated binder material: a comprehensive review

Agro-industrial-based wastes as supplementary cementitious or alkali-activated binder material: a comprehensive review

Effects of crumb rubber inclusion on strength, permeability, and acid attack resistance of alkali‐activated concrete incorporating different industrial wastes

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

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