Advancements in low-carbon concrete as a construction material for the sustainable built environment

Developments in the Built Environment, Journal Year: 2023, Volume and Issue: 16, P. 100284 - 100284

Published: Nov. 30, 2023

Researchers seek sustainable materials for eco-friendly cement and concrete to reduce CO2 emissions. This paper offers an extensive overview of the research conducted on technology with minimal zero-carbon review reviews technologies lowering construction industry's carbon footprint, focusing alternative binders supplementary cementitious (SCMs). Additionally, explores transformative potential capture utilization sustainability. It also explored life cycle assessments, economic aspects, financial implications this technology. Overall, summarizes low-carbon in context development climate change mitigation. has been found that substituting SCMs reduces emissions without compromising strength durability. Materials such as slag, metakaolin, calcined clay, limestone can replace clinker, eliminating production. study highlights challenges, including market adoption material availability, offering insights successful implementation.

Language: Английский

---

A holistic review on the contribution of civil engineers for driving sustainable concrete construction in the built environment

Developments in the Built Environment, Journal Year: 2023, Volume and Issue: 16, P. 100273 - 100273

Published: Nov. 15, 2023

Comprehending civil engineer's crucial role in promoting sustainable construction practices is becoming increasingly essential as the globe faces severe environmental and economic concerns. This study discusses pivotal concrete construction, highlighting need for their expertise creating environmentally friendly resilient infrastructure. The manuscript further importance of procurement rules endorsing development, emphasizing well-crafted policies guidelines that incentivize eco-friendly practices. possible collaborative efforts between engineers policymakers are highlighted a fundamental driver construction. Furthermore, emergence low-carbon 3D printing technology also explored an innovative technique addressing its potential to reduce carbon emissions enhance efficiency. Moreover, valuable insights future research directions opportunities identified encourage investigation advancing

Language: Английский

---

Machine learning approach for predicting the compressive strength of biomedical waste ash in concrete: a sustainability approach

Discover Materials, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 21, 2025

Language: Английский

---

Predicting the fire-induced structural performance of steel tube columns filled with SFRC-enhanced concrete: using artificial neural networks approach

Frontiers in Built Environment, Journal Year: 2024, Volume and Issue: 10

Published: May 9, 2024

Predicting the axial Shortening strength of concrete-filled steel tubular (CFST) columns is an important problem that this study attempts to solve for civil engineering projects. We suggest using a deep learning-based artificial neural network (ANN) model address issue, taking into account intricate relationship between tube and core concrete. The model, called ANN-SFRC (Steel Fibre Reinforced Concrete), surpasses R 2 threshold 0.90 achieves impressive values across different types CFST columns. Compared traditional linear regression methods, significantly improves accuracy, with observed inaccuracy less than 3% compared actual values. With its reliable approach forecasting behavior under compression, high-performance instrument enhances safety accuracy during design planning stages engineering.

Language: Английский

---

Geopolymer concrete: an innovative approach for sustainable infrastructure and advancement in circular economy

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 93 - 147

Published: Jan. 1, 2025

Language: Английский

---

Predicting the compressive strength of polymer-infused bricks: A machine learning approach with SHAP interpretability

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 8, 2025

Abstract The rapid increase in global waste production, particularly Polymer wastes, poses significant environmental challenges because of its nonbiodegradable nature and harmful effects on both vegetation aquatic life. To address this issue, innovative construction approaches have emerged, such as repurposing Polymers into building materials. This study explores the development eco-friendly bricks incorporating cement, fly ash, M sand, polypropylene (PP) fibers derived from Polymers. primary innovation lies leveraging advanced machine learning techniques, namely, artificial neural networks (ANN), support vector machines (SVM), Random Forest AdaBoost to predict compressive strength these Polymer-infused bricks. polymer bricks’ was recorded output parameter, with PP waste, age serving input parameters. Machine models often function black boxes, thereby providing limited interpretability; however, our approach addresses limitation by employing SHapley Additive exPlanations (SHAP) interpretation method. enables us explain influence different variables predicted outcomes, thus making more transparent explainable. performance each model evaluated rigorously using various metrics, including Taylor diagrams accuracy matrices. Among compared models, ANN RF demonstrated superior which is close agreement experimental results. achieves R 2 values 0.99674 0.99576 training testing respectively, whereas RMSE value 0.0151 (Training) 0.01915 (Testing). underscores reliability estimating strength. Age, ash were found be most important variable predicting determined through SHAP analysis. not only highlights potential enhance predictive for sustainable materials demonstrates a novel application improve interpretability context repurposing.

Language: Английский

---

An environmental sustainability roadmap for partially substituting agricultural waste for sand in cement blocks

Frontiers in Built Environment, Journal Year: 2023, Volume and Issue: 9

Published: June 23, 2023

Agricultural waste can be used in cement block production for a number of reasons, including its environmental, economic, and labor benefits. This study examines the mechanical, durability, cost-effectiveness characteristics blocks. A made from agriculture promotes sustainable construction practices, since is often dumped landfills regarded as material. Carbon dioxide (CO 2 ) emissions produced by sector, either firing clay bricks or cement, contribute significantly to global warming. In many developing countries, air pollution agricultural activities primarily accounted machinery openly burning agro-waste. Farming one leading causes water soil pollution. Hence, adopting into would reduce environmental impact concrete structures. The goal this research determine whether products, such vermiculite, pistachio shells, sugarcane bagasse, coconut husks, substitute sand absorption capacity materials, density, flexural strength, fire resistance, compressive strength materials admixtures were evaluated using experimental tests. most cases, blocks strong enough satisfy ASTM standards. specimens containing husks among others, found fairly durable, even when isolating them water.

Language: Английский

---

Sustainable Alternatives to Cement: Synthesizing Metakaolin-Based Geopolymer Concrete Using Nano-Silica

Construction Materials, Journal Year: 2023, Volume and Issue: 3(3), P. 276 - 286

Published: July 10, 2023

The emission of carbon dioxide gas from the cement manufacturing industry has raised concerns about global warming. Geopolymer concrete (GC) is gaining attention as a sustainable and environmentally friendly alternative to traditional concrete. current study focused on using local clay synthesize characterize metakaolin-based GC with varying percentages nanosilica (NS) (1.5%, 3.0%, 4.5%, 6.0%, 7.5% by weight MK content) NaOH/sodium silicate. geopolymer specimens were cured at room temperature for 28 days, their workability, compressive, tensile, flexural strengths measured evaluate influence NS concrete’s mechanical properties. found that increased gradually up 6.0% NS, but any further increase in its ratio resulted reduction characteristics. concludes addition metakaolin (MK)-based produces highest properties, improving compressive strength mix 34.3% compared control split tensile 39% 37%, respectively, strengths. Furthermore, statistical analysis confirms nano-silica’s significant impact emphasizing role performance sustainability an cement-based materials.

Language: Английский

---

Application of Aggregates from Construction and Demolition Wastes in Concrete: Review

Sustainability, Journal Year: 2024, Volume and Issue: 16(10), P. 4277 - 4277

Published: May 19, 2024

In the current century, urbanization and development of construction industry have led to generation demolition waste (CDW), imposing pressure on ecology environment. This has attracted attention personnel researchers. work discusses research recycled coarse or fine aggregate, mainly focusing physical, mechanical durability properties sustainable concrete with aggregate. Furthermore, it also summarizes CDW recycling classification in major countries, production processes physical properties. review will provide a reference for application Moreover, this notes that replacing natural aggregates both awaits further experimental exploration.

Language: Английский

---

Towards modern sustainable construction materials: a bibliographic analysis of engineered geopolymer composites

Frontiers in Materials, Journal Year: 2023, Volume and Issue: 10

Published: Oct. 5, 2023

Engineered cementitious composites (ECC) exhibits impressive tensile strength but has significant environmental drawbacks due to high cement consumption. Recently, engineered geopolymer (EGC) have gained attention as a potential ECC alternative. This comprehensive study reviews the latest EGC advancements, encompassing mix design, design theory, engineering properties, benefits, and durability. It emphasizes how factors like activators, precursors, fibers, additives, aggregates impact making it cost-effective material for fire, chemical resistance, dynamic loads. To address limitations in traditional literature reviews, innovative research methods, including scientometric analysis, were employed provide cohesive analysis. review aims facilitate knowledge dissemination collaboration by summarizing advances highlighting remaining challenges developing practical applications. is revealed from that various manufacturing methods enhance geopolymers, especially concrete, where replacing 50% of ordinary Portland with fly ash boosts strength. Geopolymer concrete excels pre-cast applications, offering durability resistance harsh conditions an eco-friendly alternative cement. suits highway pavement, walls, marine coatings, tiles, reducing carbon emissions promoting efficient waste management. EGCs find broad use construction their strong, durable, qualities, supporting sustainable infrastructure development.

Language: Английский

---