Influences of agro-wastes on the physico-mechanical and durability properties of unfired clay blocks

Jannat, Nusrat; Al-Mufti, Rafal Latif; Hussien, Aseel; Abdullah, Badr M.; Cotgrave, Alison

doi:10.1016/j.conbuildmat.2021.126011

Cited by 20 publications

(15 citation statements)

References 106 publications

(22 reference statements)

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“…Studies of the interaction between soil and starch from glutinous rice show that starch particles uniformly disperse and wrap around soil particles, filling in the porosity in the soil structure, which reduces the porosity ratio and increases cohesion. When water evaporates, soil particles are solidified and result in a compact structure [37,45]. A previous study focused on the introduction of starch from rice to the soil mixture for earth blocks.…”

Section: Vegetal Origin Gel (Vog) and Earthen Architecturementioning

confidence: 99%

Development and Intervention Proposal with Earthen Refurbishments with Vegetal Origin Gel (VOG) for the Preservation of Traditional Adobe Buildings

et al. 2023

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This research focuses on the addition of an ecological, sustainable material to improve the durability of earthen constructions and for use in rehabilitation and restoration processes. Specifically, it studies the mechanical and waterproof performance of an earthen mixture with the addition of a vegetal origin gel (VOG) obtained by extracting the starch contained in rice. This solution increases the durability of the mixture and the behavior against water and improves the mechanical resistance of the system. This study is divided into two parts. First, an experimental phase was carried out in the Universitat Politècnica de Catalunya laboratory to design and develop the earthen mixtures stabilized with VOG to obtain an ecological, economical and easily replicable technology that can be transferred to any population group. The second stage consisted of the application of these mixtures and a real intervention in adobe dwellings in the community of Santa Ana Chapitiro, in the State of Michoacan, Mexico. The rehabilitation solutions and dosages were transferred to the residents of the community and applied to local adobe constructions by means of participatory design through an international development cooperation project. Good behavior of the material was found in the early stage.

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Section: Vegetal Origin Gel (Vog) and Earthen Architecturementioning

confidence: 99%

Development and Intervention Proposal with Earthen Refurbishments with Vegetal Origin Gel (VOG) for the Preservation of Traditional Adobe Buildings

et al. 2023

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“…Eggshells have been considered a waste generated primarily by the poultry and food industries, with a global annual production of approximately 110 billion tons of eggshells reaching landfills 1 , 2 . However, its composition of 90–98% CaCO 3 , more highly bioavailable calcium than the commercially available limestone, or coral sources, allows for easier absorption 2 – 7 .…”

Section: Introductionmentioning

confidence: 99%

On the removal efficiency of copper ions in wastewater using calcined waste eggshells as natural adsorbents

Chou

Lee

Lin

et al. 2023

Sci Rep

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Eggshells offer many advantages as adsorbents, such as affordability without special preparations other than pulverization and calcination. However, the manufacturing industry generally has a severe problem with high concentrations of heavy metals in wastewater. The purpose of this study was to use eggshell byproducts and calcined eggshell treatment for the adsorption of copper in an aqueous solution. The reaction time, metal concentration, adsorbent dose, temperature, and pH were evaluated using primary factors followed by the response surface method (RSM) to investigate the optimum conditions for eggshell byproducts and calcined eggshell adsorption treatment. The results of the one-factor-at-a-time experiment showed that the optimal adsorption rate was obtained from treatment at 24 h, 25 mg/L, 10 mg, and 25 °C. In addition, the effect of pH on the adsorption rates of eggshells and eggshells with membrane were detected at pH values of 5 and 5.9 and found to be 95.2, 90.5, and 73.3%. The reaction surface experiment showed that the best adsorption rate reached 99.3% after calcination at 900 °C for 2 h and a 20 min reaction. The results showed that eggshells, eggshell membranes, eggshells with membrane, and calcined eggshells could be applied to remove copper ions from industrial wastewater. The adsorption capacity of the calcined eggshell is better than that of the non-calcined eggshell and has good neutrality in acidic industrial wastewater. Therefore, it is convenient and practical for practical production and application. Likewise, this study conveys promising findings in the context of improving wastewater treatment based on a circular economy approach to waste reuse in the food industry and represents a valuable direction for future research.

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“…Furthermore, the incorporation of various waste materials like eggshell powder (ESP), sawdust powder (SDP), and coconut husk powder (CHP) has demonstrated a profound impact on the physicomechanical and durability properties of unfired clay blocks, underscoring the potential for these materials in addressing environmental concerns and cost-effective building solutions. [22].…”

Section: Introductionmentioning

confidence: 99%

Shrinkage Behavior of Stabilized Earth Bricks Reinforced with Wheat and Barley Straw

Ashour,

Korjenic,

Abdelfattah

et al. 2023

Sustainability

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Due to its ecological and financial benefits, earth building has gained global attention, with earth bricks being extensively used. Shrinkage and crack development have a considerable impact on the performance and quality of earth bricks. This study employs laboratory experiments to examine the shrinkage behavior of earth bricks reinforced with wheat and barley straw. In addition to this, the impact of cement and gypsum additives is examined. The obtained results indicate that increased fiber content reduces crack formation effectively. However, higher levels of cohesive soil have been shown to have a negative influence on shrinkage behavior. In general, higher fiber contents contribute to the improvement of earth brick performance. These findings offer useful insights for improving the composition and characteristics of reinforced earth bricks, resulting in enhanced performance and quality in sustainable construction practices.

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Influences of agro-wastes on the physico-mechanical and durability properties of unfired clay blocks

Cited by 20 publications

References 106 publications

Development and Intervention Proposal with Earthen Refurbishments with Vegetal Origin Gel (VOG) for the Preservation of Traditional Adobe Buildings

Development and Intervention Proposal with Earthen Refurbishments with Vegetal Origin Gel (VOG) for the Preservation of Traditional Adobe Buildings

On the removal efficiency of copper ions in wastewater using calcined waste eggshells as natural adsorbents

Shrinkage Behavior of Stabilized Earth Bricks Reinforced with Wheat and Barley Straw

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