Construction and demolition waste-based geopolymers for built-environment: An environmental sustainability assessment

Mir, Namra; Khan, SA.; Kul, Anıl; Şahin, Oğuzhan; Şahmaran, Mustafa; Koç, Muammer

doi:10.1016/j.matpr.2022.09.269

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Additionally, research like [40] delves specifically into the structural compositions of cement-based materials used in 3D printing, contributing essential knowledge to the material science aspect of this field. Another area largely unknown in nearly every phase, including design, process technology, and material, is the environmental effect and life cycle evaluation of 3DP technology for construction [41][42][43][44][45]. Several previous reviews have discussed the overall technological consideration, potential, and material development of 3DP systems for the building [46][47][48][49][50].…”

Section: Dp For Constructionmentioning

confidence: 99%

3D Printing Technology for Rapid Response to Climate Change: Challenges and Emergency Needs

Alim Khan,

Al Rashid,

Muhammad

et al. 2024

Intelligent and Sustainable Manufacturing

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Providing rapid, efficient, inexpensive, and resilient solutions is an eminent and urgent need for emergency relief conditions, mainly and increasingly driven by the impacts of climate change. Under such disastrous circumstances, the current practice involves preparation, dispatching and managing significant amounts of materials, resources, manpower, and transportation of basic needs, which can be hindered remarkably by infrastructure damage and massive loss of lives. However, an emerging technology known as 3D printing (3DP) can play a significant role and rapidly bring unlimited innovative solutions in such conditions with much lesser resources to meet the necessities of large populations affected. Considering the recent progress of 3DP technology and applications in different industrial and consumer sectors, this study aims to provide an analysis of the status and current progress of 3DP technology in various fields to understand and present its potential for readiness and response to disasters, emergency and relief need driven by climate change. Secondly, this study also presents a sustainability assessment of 3DP technology for such cases to evaluate economic, environmental, and social impacts. Finally, policies and strategies are suggested to adapt 3DP technology in different sectors to prepare for large-scale emergencies.

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Section: Dp For Constructionmentioning

confidence: 99%

3D Printing Technology for Rapid Response to Climate Change: Challenges and Emergency Needs

Alim Khan,

Al Rashid,

Muhammad

et al. 2024

Intelligent and Sustainable Manufacturing

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“…Construction and demolition wastes such as brick wastes and crushed waste glass have also been explored by various researchers for use in geopolymer concrete to reduce the amount of cement or aggregates. In addition, adding recycled waste can help reduce waste and protect natural resources [94]. For the various reviewed studies in this paper, the chemical compositions of some of the explored waste and by-product materials other than basic precursors are shown in Table 1.…”

Section: Aluminosilicate (As)mentioning

confidence: 99%

Geopolymers: The Green Alternative to Traditional Materials for Engineering Applications

et al. 2023

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Researchers have been driven to investigate sustainable alternatives to cement production, such as geopolymers, due to the impact of global warming and climate change resulting from greenhouse gas emissions. Currently, they are exploring different methods and waste materials to enhance the mechanical and physical properties of geopolymer and expand its application range. This review paper offers a thorough analysis of the utilization of various waste materials in geopolymer manufacturing and shows the creative contribution of this research to the development of environmentally friendly cement substitutes. The article covers the properties, durability, and practical applications of geopolymer composites made from various waste binders. It includes a microstructure and chemical analysis. The research findings indicate that geopolymers are an effective cementitious binder substitute for cement in various applications. Additionally, the ecological and carbon footprint analysis highlights the sustainability of geopolymers compared to cement.

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Effect of Expanded Glass Lightweight Aggregate on the Performance of Geopolymer Mortar at Elevated Temperatures

Al Mohammad,

ÇEVİK,

Jwaida

et al. 2024

Iran J Sci Technol Trans Civ Eng

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The greenhouse gas emissions associated with conventional concrete as a result of the cement industry have prompted scientists to search for eco-friendly alternatives. Among these promising alternatives is geopolymer concrete or mortar. This work studies the impact of using polyvinyl alcohol (PVA) fibers and lightweight expanded glass (EG) aggregate on the mechanical behaviour of lightweight geopolymer mortar (LWGM) at various temperatures (room temperature, 250 °C, and 500 °C). EG was utilized to partially replace the sand by 10 and 20%. Limited studies dealt with geopolymer mortar based on such composition at high temperatures. The geopolymer mortar was created using slag as the main precursor activated by a mixed solution of sodium hydroxide and sodium silicate. Various combinations were produced, and their behaviour was observed at room and high temperatures. Several tests such as workability, compressive and flexural strengths, density, stress-strain relationship, load-displacement behaviour, and uniaxial tensile strength were performed. The findings of the study indicate that the density and compressive strength of geopolymer mortar reduced with increasing the replacement level by the EG. However, the utilization of 10% EG can produce a lightweight mortar with a compressive strength of 17.9 at 28 days. Moreover, the use of 1% PVA significantly improves the mechanical performance. Furthermore, the mechanical characteristics of the materials were considerably altered when subjected to extreme temperatures of 500 °C as observed from experimental data.

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Construction and demolition waste-based geopolymers for built-environment: An environmental sustainability assessment

Cited by 7 publications

References 7 publications

3D Printing Technology for Rapid Response to Climate Change: Challenges and Emergency Needs

3D Printing Technology for Rapid Response to Climate Change: Challenges and Emergency Needs

Geopolymers: The Green Alternative to Traditional Materials for Engineering Applications

Effect of Expanded Glass Lightweight Aggregate on the Performance of Geopolymer Mortar at Elevated Temperatures

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