Pozzolanic Potential and Mechanical Performance of Wheat Straw Ash Incorporated Sustainable Concrete

Amin, Muhammad; Murtaza, Tariq; Shahzada, Khan; Khan, Kaffayatullah; Adil, Mohammad

doi:10.3390/su11020519

Cited by 41 publications

(28 citation statements)

References 41 publications

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“… WSA fulfills criteria for pozzolanic materials, including: activity index, setting time and soundness of powder fly ash materials, given in EN 450-1 [29];…”

Section: Wheat Straw Ashmentioning

confidence: 99%

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Harvest residues ash as a pozzolanic additive for engineering applications: A review and the catalogue

Šupić¹,

Malešev²,

Радоњанин³

2021

Građ materijali i konstrukcije

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Biomass ashes originating from wood and harvest residues combustion may be considered as one of the prospective environmentally friendly candidates for supplementary cementitious materials (SCM) production. In the region of Vojvodina province, biomass waste is becoming increasingly important as ''green'' fuel, thus allowing the reduction of the environmental impact of waste disposal, lowering the expensive fossil fuels application and its subsequent greenhouse gasses emission. In the light of the above, the present paper surveys the experimental studies of harvest residues ash (HRA) as a pozzolanic additive for engineering applications. Thus far conducted research on the HRA possible application in cementitious systems, worldwide and in the studied region, has been summarized and the benefits of such approaches outlined. Finally, locally available types of wheat straw, soya straw, sunflower husk, silo waste, oil rapeseed - based ashes were collected, characterized both physically and chemically, evaluated and presented through catalogue. The reactivity results, depending on the amorphous silica content and the achieved level of fineness, are very promising in terms of the potential reuse of these ashes in cementing systems.

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“… WSA fulfills criteria for pozzolanic materials, including: activity index, setting time and soundness of powder fly ash materials, given in EN 450-1 [29];…”

Section: Wheat Straw Ashmentioning

confidence: 99%

“… Optimum cement replacement level, determined by [29], was estimated at 15%, whereas the mortar containing 15% WSA has shown comparable strength to that of control mortar at 7 days, and even higher strength at ages of 28 and 91 days, respectively. Similar trend was registered by Dehane et al [30].…”

Section: Wheat Straw Ashmentioning

confidence: 99%

Harvest residues ash as a pozzolanic additive for engineering applications: A review and the catalogue

Šupić¹,

Malešev²,

Радоњанин³

2021

Građ materijali i konstrukcije

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“…The raw sample of rice husk was incinerated under different controlled temperatures as the amount and the phase of silica (amorphous or crystalline) in RHA greatly dependent on the range and duration of incineration. To achieve silica in amorphous form, the rice husk was burnt under two different temperatures of 700 and 950 • C in a rotary kiln (Amin et al, 2019). For both temperatures, burning duration was kept same to 3 h. Figure 2b shows the color of RHA after burning at high temperatures (700 and 950 • C).…”

Section: Rice Husk Ash (Rha)mentioning

confidence: 99%

Pozzolanic Reactivity and the Influence of Rice Husk Ash on Early-Age Autogenous Shrinkage of Concrete

et al. 2019

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In this study, the role of a locally available rice husk ash (RHA) in reducing early-age shrinkage of high performance concrete (HPC) after evaluating its pozzolanic reactivity was evaluated. The X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analyses were performed after burning rice husk to 700 and 950 • C. Presence of relatively high deposits of amorphous siliceous phases in RHA at 700 • C indicated its pozzolanic potential. Subsequently, this RHA was ground to desired fineness, followed by sieving through sieve No. 200. Eventually, the fine RHA was used as a substitute of cement in different percentages (10, 15, and 20%) to evaluate its influence in mitigating autogenous shrinkage in concrete. Prismatic concrete beams (100 × 100 × 800 mm) were cast to measure autogenous shrinkage along with cylinders (150 mm dia. x 300 mm height) to test compressive strength of concrete. The results indicated a slight increase in compression strength with addition of 10% RHA, which however, reversed and slightly reduced in concretes containing 15 and 20% RHA. Unlike strength results, the trend of autogenous shrinkage was rather uniform as the rate as well as the amount of early-age autogenous shrinkage continued to decrease with increasing percentage of RHA. Moreover, despite of reduced rate during first 24 h, thereafter, the effect of 20% RHA on further reduction of autogenous shrinkage was insignificant and ended up only slightly lesser than the 15% RHA concrete at 7 days. Finally, the control cement sand mortar and mortar containing 15% RHA were cast to further validate the pozzolanic reactivity of RHA through scanning electron microscopy (SEM), EDX, and thermogravimetric analysis (TGA) tests. An observation of reduced amount of calcium hydroxide (Ca(OH) 2) in RHA mortar samples indicating its excellent pozzolanic potential when used as a partial substitute of cement in HPC.

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“…waste (KAZA et al, 2018). Among the investigated agro-wastes in civil construction, there are corn cob ash (OLAFUSI; OLUTOGE, 2012; MUJEDU; ADEBARA; LAMIDI, 2014), elephant grass ash SALES, 2015;NAKANISHI et al, 2016), rice husk ash (HABEEB; MAHMUD, 2010; ABU BAKAR; RAMADHANSYAH; MEGAT AZMI, 2011;DHENGARE et al, 2019;LI et al, 2019), sugarcane bagasse ash (SHAFIQ et al, 2018;DHENGARE et al, 2019;YADAV et al, 2020), and wheat straw ash ( MEMON et al, 2018;AMIN et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Bamboo ashes as an eco-friendly alternative to cement - a systematic review

Carvalho

Velasco

2021

ForScience

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Cement production impacts the environment from raw materials extraction to its industrialized production. Implementing supplementary cementitious materials (SCM) to replace cement is an economical and sustainable practice. Agricultural wastes, for example, represent a new source of SCM studied over the last decades, mainly due to its high generation around the world. Among the published review papers about agro-waste in civil construction, bamboo ashes (BA) appear secondary in large-scale studies. Thus, this work aimed to evaluate BA potential use in the construction industry as cement replacement by identifying their behavior in cementitious compounds and discovering the research gaps about this topic. We overviewed the published literature about concrete made with BA, synthesizing data about BA chemical composition and mechanical and physical characteristics of cementitious materials made with these ashes. We identified a preference for bamboo leaves ashes as SCM, potentially due to its high silica amount. However, other biological and environmental parameters that alter the bamboo chemical composition were not discussed in the papers. Concerning compressive strength, 90% of the studies with BA reported cementitious materials with a strength activity index acceptable for use. This review also identified an optimal percentage of cement replacement with BA ranging from 8% to 12% in concrete specimens. Concrete and mortar with BA also showed a lower density than the reference samples made only with cement. We concluded that BA are promising alternatives to replace cement since they provide desirable mechanical and physical characteristics to concrete and meet sustainability requirements. Besides that, we raised some topics that may guide future researches: (1) the natural and artificial parameters that affect BA composition; (2) BA chemical and physical behavior under microscopical conditions in cementitious composites; and (3) the economic advantages associated with replacing cement with BA. Keywords: Cement substitutes. Addition. Artificial pozzolan. Sustainability. Supplementary cementitious materials. Cinzas de bambu como alternativa eco-amigável ao cimento - uma revisão sistemática Resumo A produção de cimento impacta o meio ambiente desde a extração de matérias-primas até sua produção industrializada, o que reforça a demanda por materiais cimentícios suplementares (MCS) para substituir, mesmo que parcialmente, o uso do cimento. Os resíduos agrícolas, por exemplo, são um bom exemplo de MCS estudado nas últimas décadas, principalmente devido à sua alta geração em todo o mundo. Dentre os artigos de revisão publicados sobre o uso de resíduos agrícolas na construção civil, as cinzas de bambu figuram apenas como subtópico em estudos maiores. Logo, esse trabalho objetivou avaliar o potencial do uso de cinzas de bambu na indústria da construção civil como substituinte parcial ao cimento identificando seu comportamento em compostos cimentícios e sugerindo temas para pesquisas futuras. Esta revisão sistemática fornece uma visão geral da literatura publicada sobre argamassas e concretos feito com cinzas de bambu, sintetizando dados sobre a composição química dessas cinzas e as características mecânicas e físicas dos materiais cimentícios feitos com elas. Identificou-se uma preferência pelo uso de cinzas de bambu advindas da calcinação das folhas dessa planta, potencialmente devido ao seu alto teor de sílica. No entanto, existem parâmetros biológicos e ambientais que alteram a composição química do bambu e que não são discutidos pelos artigos. Quanto à resistência, 90% dos estudos que empregaram cinzas de bambu reportaram à resistência compressão admissível para uso em construções. Levantou-se, também, que a porcentagem ideal de substituição de cimento por cinzas de bambu varia de 8% a 12% em amostras de concreto. Os materiais cimentícios com cinzas de bambu também apresentaram densidade menor que a das amostras de referência feitas apenas com cimento. Conclui-se pelo estudo que as cinzas de bambu são alternativas promissoras para substituir parcialmente o cimento visto que elas proporcionam boas características mecânicas e físicas ao concreto e atendem a demandas sustentáveis. Além disso, foram levantadas lacunas na literatura que podem guiar futuras pesquisas, quais sejam: (1) os parâmetros naturais e artificiais que afetam a composição química das cinzas de bambu; (2) o comportamento químico e físico de cinzas de bambu em compósitos cimentícios sob condições microscópicas; e (3) as vantagens econômicas associadas a substituir parcialmente cimento por cinzas de bambu. Palavras-chave: Substitutos do cimento. Adição. Pozolana artificial. Sustentabilidade. Materiais cimentícios suplementares.

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Pozzolanic Potential and Mechanical Performance of Wheat Straw Ash Incorporated Sustainable Concrete

Cited by 41 publications

References 41 publications

Harvest residues ash as a pozzolanic additive for engineering applications: A review and the catalogue

Harvest residues ash as a pozzolanic additive for engineering applications: A review and the catalogue

Pozzolanic Reactivity and the Influence of Rice Husk Ash on Early-Age Autogenous Shrinkage of Concrete

Bamboo ashes as an eco-friendly alternative to cement - a systematic review

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