Agro-waste ash based alkali-activated binder: Cleaner production of zero cement concrete for construction

Athira, V.S.; Charitha, V.; Athira, G.; Bahurudeen, A.

doi:10.1016/j.jclepro.2020.125429

Cited by 74 publications

(24 citation statements)

References 77 publications

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“…Of the studies analysed, 74 percent were published between 2017 and 2021. These results coincide with those of similar studies, which indicate that in the last 5 years, there has been an increase in the scientific research on the use of AWB in concrete [26,33]. This leads to the conclusion that the policies and strategies on sustainable development, which have become more relevant since 2015 with the 2030 Agenda, have boosted scientific research on this subject.…”

Section: Types Of Publications and Evolution Of Scientific Productionsupporting

confidence: 88%

“…3 published 84% of the publications in the sample. Other studies rank India as the country with the third-highest number of publications on agro-waste in concrete production [26,33]. These results align with a previous study that analysed AWB valorisation alternatives and identified India as one of the countries with the highest scientific production on the subject [43].…”

Section: Publications By Countrysupporting

confidence: 86%

“…Similarly, percentages of Loss on Ignition (LOI) and chemical components, such as SiO 2 , Al 2 O 3 , CaO, Fe 2 O 3 , Na 2 O, P 2 O5, MgO, MnO, K 2 O [6, 16-20, 25-29, 35, 50, 52, 53, 55, 56, 60, 62, 68-81]. Other main properties evaluated were thermal conductivity, microstructure and sound absorption [5,18,21,22,26,28,33,60,65,74,82].…”

Section: Main Approaches To Scientific Production-systematic Reviewmentioning

confidence: 99%

“…However, it is noticeable how the terminology has evolved in recent years. The most recent research refers to agro-concrete/cement, agro/bricks, sustainable cement/concrete, sustainable bricks, green concrete, ecological concrete, eco-friendly bricks, thermally efficient bricks, zero cement concrete, sustainable bio-modified asphalt, sustainable green highways [18,26,50,54,63,67,77,91,100]. These new concepts align with recent policy approaches on sustainable development and, more specifically, with the circular economy and bioeconomy [4,11].…”

Section: Main Bio-based Products Tablementioning

confidence: 99%

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Management of agricultural waste biomass as raw material for the construction sector: an analysis of sustainable and circular alternatives

et al. 2022

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Background The agricultural and construction sectors demand enormous amounts of natural resources and generate environmental impacts that negatively affect ecosystems. One of the main problems is the generation and inadequate management of waste. For this reason, under the approaches of the new sustainable and circular models, waste valorization has been prioritised as a strategy for advancing towards the sustainability of production systems. This research aims to carry out a general analysis of Agricultural Waste Biomass (AWB) in the production of bio-based products for the construction sector. Bibliometric techniques were applied for the general analysis of the scientific production obtained from Scopus. A systematic review identified the main research approaches. In addition, European projects were reviewed to assess the practical application. This study is novel and provides relevant contributions to new trends in the valorisation of AWB in the building sector and the sustainability benefits. For policymakers, it is a source of information on the contribution of new policies to scientific advances and the aspects that need to be strengthened to improve sustainable and circular practices in both sectors. Results The results show that 74% of the research has been published within the last 5 years. Regarding the main types of AWBs, rice husk ash and sugar cane bagasse ash are the most commonly used in manufacturing a wide variety of bio-based building products. Cement, concrete and bricks are the main bio-based products obtained from AWB. However, a new approach to utilisation was identified in road construction. Conclusions The findings indicate that the AWB is an important resource with great potential for the construction sector. Similarly, that policies on sustainable and circular development have driven scientific progress on new alternatives for the valorisation of AWB to improve sustainability in the construction sector. Although the practical application has also been driven through European projects, development at this level is still low. Therefore, it is necessary to strengthen partnerships between these two sectors and improve government strategies on sustainability and circularity to overcome existing constraints.

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Section: Types Of Publications and Evolution Of Scientific Productionsupporting

confidence: 88%

Section: Publications By Countrysupporting

confidence: 86%

Section: Main Approaches To Scientific Production-systematic Reviewmentioning

confidence: 99%

Section: Main Bio-based Products Tablementioning

confidence: 99%

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Management of agricultural waste biomass as raw material for the construction sector: an analysis of sustainable and circular alternatives

et al. 2022

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“…77.59% of the fly ash available globally is generated in India. Because of its availability fly ash finds its use in the cement industry, mine filling, bricks, and many other related applications [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Abhishek

Prashant

Kamath

et al. 2021

Innov. Infrastruct. Solut.

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This paper describes a review of the state-of-the-art research carried on the fresh and hardened properties of Alkali Activated Binders and Concretes. Though, many research have been carried out in the recent times on alkali activated binders, few key parameters still remain unattended, that restricts the commercial application of AAMs to the general construction activities. Fresh properties, mechanical strength and durability performance of Alkali activated concrete with various Alumino silicates as base materials is mentioned. An essential parameter of Alkali activated concrete is the concentration of alkaline solution on which various properties like mechanical strength, setting time and durability depends. Influence of wide range of concentrations from 6 to 16 M on these properties are studied and reported in this paper. This paper mainly concentrates on properties of readily available base materials such as Fly ash and Slag and the means to improve their performance through the use of various industrial and agro-based byproducts as additives. Problems pertaining to practical applicability of AAMs to general construction activities are also highlighted.

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Effect of olive waste ash on the properties of high‐strength geopolymer concrete

Zeyad,

Bayagoob,

Amin

et al. 2024

Structural Concrete

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This study examines the effect of incorporating olive waste ash (OWA) into high‐strength geopolymer concrete (HSGC) by partially replacing fly ash (FA) and/or granulated blast furnace slag (GBFS) in the presence of rice husk ash (RHA). A total of 18 different mixtures were prepared and divided into three groups: (1) Utilizing OWA as a partial replacement for FA at a weight ratio of 10%–50%. (2) Incorporating OWA as a partial substitute for GBFS, with a weight ratio of 10%–50%. (3) Incorporate OWA as a partial substitute for FA and GBFS, with a recommended weight ratio of 10%–50%. The slump flow test was used to analyze the fresh properties of the HSGC. The hardening properties were examined by measuring the compressive strength, tensile strength, flexural strength, and modulus of elasticity. Furthermore, an analysis was conducted on the water absorbency, sulfate attack, and chloride penetration depth. A scanning electron microscope was used for the microstructural analysis. The inclusion of OWA in HSGC mixtures resulted in a significant enhancement of the compressive strength. Specifically, adding 20% OWA to FA increased the compressive strength by 8.9% at 28 days. Similarly, 30% OWA for GGBS and 30% OWA for GGBS + FA led to compressive strength improvements of 20% and 17.8%, respectively. OWA application resulted in an enhanced microstructure density of the HSGC samples. The ideal substitution ratio varied between 20% and 30% based on weight.

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Agro-waste ash based alkali-activated binder: Cleaner production of zero cement concrete for construction

Cited by 74 publications

References 77 publications

Management of agricultural waste biomass as raw material for the construction sector: an analysis of sustainable and circular alternatives

Management of agricultural waste biomass as raw material for the construction sector: an analysis of sustainable and circular alternatives

Fresh mechanical and durability properties of alkali-activated fly ash-slag concrete: a review

Effect of olive waste ash on the properties of high‐strength geopolymer concrete

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