Experimental Investigation on the Mechanical and Microstructural Properties of Concrete with Agro-Waste

Godwin, Antony; S, Nancy Deborah; Ponraj, Julius; R, Vinslin Blessho; Stephen, C.

doi:10.14419/ijet.v7i3.12.15858

Cited by 6 publications

(4 citation statements)

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“…Mainly because these bio-based products meet the properties and performance requirements for building materials. In addition, they are similar to commercial products and conform to regulatory specifications [5, 18, To improve the properties and/or guarantee the performance of most of the bio-based products in Table 1, studies suggest substitution percentages between 5 and 15% by weight of AWBs [6,16,18,19,21,25,33,50,51,53,66,69,77,90,100,103,115]. These findings align with a study that identified similar percentages, between 5 and 10% AWB for fired clay bricks [100].…”

Section: Main Types and Properties Of Awbs Used By Categorysupporting

confidence: 73%

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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: Main Types and Properties Of Awbs Used By Categorysupporting

confidence: 73%

“…Thirty-five percent of total European Union (EU) waste generation is in the construction sector [1]. In many countries, the management and disposal of waste from these sectors poses a serious problem, mainly from an environmental and social point of view [5,6].…”

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confidence: 99%

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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“…The rice husk ash is found effective as a replacement for sand up to 10% [9]. The presence of CSH gel and Ca (OH)2 in concrete with addition to the agro-waste attributed to greater strength and other properties in comparison with conventional concrete for lesser content of agro-waste [10]. Utilization of RHA and Bagasse Ash in Self Compacting Concrete (SCC) resulted in the densification of the microstructure of concrete due to the filler effect and secondary CSH gel formation by pozzolanic reaction [11].…”

Section: Introductionmentioning

confidence: 99%

Characteristic study on concrete elements using agro-waste as a replacement of fine aggregate

T M,

Someshb

2023

Res. Eng. Struct. Mater.

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Concrete is the predominant material that is commonly used for all construction engineering practices and the demand for concrete ingredients has increased nowadays. Utilization of agricultural waste helps in meeting the demand and the present study focused on replacement of fine aggregate with agro-waste. Agrowastes such as Rice Husk Ash, Saw Dust, and Coconut Shell powder were utilized as a replacement for fine aggregate. An experimental investigation was carried out on concrete specimens with varying proportions of 2%, 4%, 6%, and 8% of agro-waste to the weight of fine aggregate. Agro-waste was equally proportioned for the replaced weight of fine aggregate. Agro-waste concrete was compared with conventional concrete (100% -M sand) for the improvement in mechanical properties by examining the results of compressive strength test and split tensile strength test. Also, the performance of concrete specimens was also determined by non-destructive testing. The optimization of the concrete mix for the addition of agro-waste was obtained based on the strength characteristics. The effectiveness of utilizing agricultural waste in concrete with rebars was studied using the chloride ingress test and Open Circuit Potential test. The experimental findings show that 2 to 4% of agro-waste can be utilized efficiently as fine aggregate replacement.

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“…Several studies have demonstrated the suitability of agricultural waste for use in concrete as a substitute for cement, ne, and coarse aggregates . It follows that using agricultural waste materials would contribute to eliminating the problem of pollutants and reduce construction materials' costs (Antony Godwin et al, 2018). It is possible to partially replace cement with ashes produced from the combustion of Pigeon pea stalks to fabricate sustainable concrete.…”

Section: Introductionmentioning

confidence: 99%

An investigation on the mechanical and microstructural properties of pigeon pea stalk ash concrete: An approach towards environmental sustainability

Krishnan

Subramanian

2022

Preprint

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The concept of sustainability in agricultural residue management has gained increasing traction around the world in recent years. After harvesting, large volumes of waste are generated that are often dumped into the environment, causing pollution. In addition to preventing environmental degradation, these wastes can also be used in the concrete industry to reduce mineral resource depletion. With this approach, sustainable development is possible. According to the results of this investigation, the effect of pigeon pea stalk ash (PPSA) as a partial replacement of cement in concrete, a series of experimental tests were performed. It has been found that the compressive strength increases for the mixes from 4 to 8% of cement replacement. In contrast, the strength decreases when the percentage replacement of pigeon pea stalk ash with cement exceeds 8%. Based on the experimental results, concrete infused with 8% pigeon pea stalk ash increased its compressive strength by 6.96%. The compressive strength decreased with a further increase in PPSA content. Although the split tensile strength value of PPSA8 concrete was same value compared to the control concrete, even an 8% PPSA concrete has higher strength than other replacement levels. Concrete with 8% PPSA content was observed to have a higher flexural strength than control concrete. PPSA concrete was prepared with pigeon pea stalk waste up to 8% substitution of cement. PPSA concrete has reduced permeability and higher resistance to acid attack. All the strength and durability test results revealed that PPSA concrete type was superior to the control concrete in terms of mechanical qualities and durability characteristics. The present work discusses concrete's improved economic and environmental aspects with incorporated pigeon pea stalk ash. Hence, this study points toward the highest potential use of more concerned about agricultural wastes like pigeon pea stalk ash in green concrete.

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Experimental Investigation on the Mechanical and Microstructural Properties of Concrete with Agro-Waste

Cited by 6 publications

References 2 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

Characteristic study on concrete elements using agro-waste as a replacement of fine aggregate

An investigation on the mechanical and microstructural properties of pigeon pea stalk ash concrete: An approach towards environmental sustainability

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