Construction and demolition waste-based self-healing geopolymer composites for the built environment: An environmental profile assessment and optimization

Mir, Namra; Al-Ghamdi, Sami G.; Kul, Anıl; Şahin, Oğuzhan; Özçelikci, Emircan; Şahmaran, Mustafa; Кочкодан, Віктор

doi:10.1016/j.conbuildmat.2023.130520

Cited by 19 publications

(1 citation statement)

References 17 publications

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“…Researchers were also interested in geopolymers made with RBP and RCP 49 , 50 . Their study included investigations into self-healing effect 51 , 52 , thermal insulation 53 , 3D print 54 , 55 and resistance to temperature fluctuations 56 , 57 . Furthermore, more favorable results were obtained when CDW was recycled through geopolymerization than when used as a partial or full OPC replacement.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of next-generation sustainable brick and mortar through geopolymerization of construction debris

Rahimpour,

Amini,

Sharifi

et al. 2024

Sci Rep

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Waste from construction and demolition (also known as CDW) is one of the most harmful environmental issues. This study's primary goal is to produce new mortar and brick materials from recycled concrete powder (RCP) and recycled brick powder (RBP), two of the most popular CDW. Geopolymeric mortar and brick samples were produced by passing RCP and RBP through sieve No. 50 (with sand filler if necessary) and combining them with an alkaline solution made of water glass (WG) and NaOH. In this study, the mixture was then cured for three days at 80 °C in an oven. The effects of filler, RBP amount, WG amount, and the concentration of NaOH alkaline solution on the samples’ strength were examined. Additionally, XRF and SEM/XRD tests were performed to verify the materials' composition and microstructure. The mechanical strength of the samples showed an increase with the increase of RCP values, so the brick sample with filler showed the highest compressive strength, measuring 59.53 MPa. The study's samples exhibited strong mechanical properties. Additionally, all of the bricks' water absorption fell within the standard range. In summary, according to different standards, both waste concrete and waste brick can be used to produce geopolymer materials especially bricks for construction and paving purposes.

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of next-generation sustainable brick and mortar through geopolymerization of construction debris

Rahimpour,

Amini,

Sharifi

et al. 2024

Sci Rep

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Efficient Recovery of Valuable Resources from Construction and Demolition Waste Towards Circular Economy in Construction Industry—Sustainability Assessment and a Case Study

Ozcelikci,

Aldemir,

Sahmaran

2023

Creating a Roadmap Towards Circularity in the Built Environment

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Considerably high amounts of CO2 release to the atmosphere trigger global warming. Although there are several methods to reduce the level of CO2 release, the extent is still very limited and recently-growing awareness of sustainabil-ity/global warming have been pushing the entire construction industry to seek alternative methods for rigorously lowering/eliminating the level of CO2. The key strategic objective of the study is to develop eco-friendly/innovative, 100% CDW-based construction materials and demountable structural systems. This study aims to achieve higher levels of circularity in civil engineering materials/structures, contributing to the reduction/elimination of CO2 emissions much more rigorously through the following key objectives: (i) Upgrading CDW recycling/reuse efficiency by capturing CO2 from the atmosphere to improve properties of CDW-based constituents via accelerated mineralization/carbonation, (ii) Development of holistically-designed advanced material property improvement technologies to even enhance the greenness of 100% CDW-based materials/structures through efficient CO2 binding/elimination capability, (iii) Validation of the ultimate products (materials/structures) with additional green perspective through a detailed large-scale field demonstration. Despite the abundance of studies in this area, there is currently very little work on demonstration activities on the real-time applicability of geopolymers development using industrial by-products and CDWs. Successful outputs of this study and their real-time demonstration will offer a fully sustainable construction system, including speed of construction/design flexibility/air purification/cost reduction/energy and material saving/avoidance of unwanted pollution-heavy demolition processes and make much larger audience to be influenced by the study’s results.

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Life cycle assessment on fabrication and characterization techniques for additively manufactured polymers and polymer composites

Al Rashid,

Khan,

Koç

2024

Cleaner Environmental Systems

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Construction and demolition waste-based self-healing geopolymer composites for the built environment: An environmental profile assessment and optimization

Cited by 19 publications

References 17 publications

Facile fabrication of next-generation sustainable brick and mortar through geopolymerization of construction debris

Facile fabrication of next-generation sustainable brick and mortar through geopolymerization of construction debris

Efficient Recovery of Valuable Resources from Construction and Demolition Waste Towards Circular Economy in Construction Industry—Sustainability Assessment and a Case Study

Life cycle assessment on fabrication and characterization techniques for additively manufactured polymers and polymer composites

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