Evaluation of Mechanical, Ecological, Economical, and Thermal Characteristics of Geopolymer Concrete Containing Processed Slag Sand DOI Open Access

M G Girish,

Kiran Kumar Shetty, Gopinatha Nayak

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(17), P. 7402 - 7402

Published: Aug. 28, 2024

This manuscript highlights the mechanical, economical, ecological, and thermal investigations performed on paving quality geopolymer concrete (PQGC) incorporating processed steel slag (PSS) as a substitute for river sand (RSa). The replacement of RSa with PSS ranged from 0 to 100% in PQGC mix. mix content exhibited enhanced geopolymerization, resulting denser more amorphous matrix. improved mechanical properties, increasing compressive strength by 10.9%, flexural 23.5%, splitting tensile 8.3%. led marginal reduction (embodied energy) EE CO2 emissions. However, compared conventional Pavement Quality Concrete (PQC) Fly Ash PQC (FPQC), was 44% 34%, while emissions were reduced 1.22 1.49 times. Despite these benefits, 19% 30% expensive than FPQC, respectively. Global Warming Potential (GWP) approximately one-third that FPQC at all levels when FPQC. Additionally, conductivity decreased k = 0.67 W/m °C 0.51 RSa, keeping cooler. Therefore, PSS, practically implemented, may help reduce surrounding temperatures. study concludes is feasible reliable alternative enhancing sustainability PQGC.

Language: Английский

Hybrid portland cement-slag-based geopolymer mortar: Strength, microstructural and environmental assessment DOI
Ceren Kına, Harun Tanyıldızı,

Volkan Açik

et al.

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: 195, P. 106771 - 106771

Published: Jan. 11, 2025

Language: Английский

Citations

3
Radiation shielding properties of heavy-weight concrete and heavy-weight geopolymer concrete incorporating nano-ZnS DOI

Mohammad Hassan Aminsharei,

Iman M. Nikbin, Hossein Parvini Sani

et al.

Nuclear Engineering and Design, Journal Year: 2024, Volume and Issue: 424, P. 113240 - 113240

Published: April 30, 2024

Language: Английский

Citations

8
Geopolymer bricks: The next generation of construction materials for sustainable environment DOI
Dipankar Das,

Anna Gołąbiewska,

Prasanta Kumar Rout

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 445, P. 137876 - 137876

Published: Aug. 17, 2024

Language: Английский

Citations

7
Evaluating Techno-Eco-Efficiency of Waste Clay Brick Powder (WCBP) in Geopolymer Binders DOI Creative Commons

Shaila Sharmin,

Wahidul K. Biswas, Prabir Kumar Sarker

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(3), P. 692 - 692

Published: March 5, 2024

The global focus on geopolymer binder production has increased due to the adoption of waste materials and industrial byproducts. Given gradual decline in availability fly ash ground granular blast furnace slag (GGBFS) resulting from decarbonization process electricity steel production, clay brick powder (WCBP) could be a viable substitute for these pozzolanic by-products. This study presents economic environmental benefits use WCBP as replacement conventional by-products by assessing its techno-eco-efficiency, impact, cost-effectiveness performances. favorable mechanical characteristics exhibited ash–GGBFS–WCBP-based emphasize importance sustainability alongside technical viability. employed life cycle analysis (LCA), following ISO framework, using Simapro software 9.2, evaluate implications WCBP-based mixtures. Human toxicity emerged primary impact. Moreover, costs highlighted key financial factors, with around 65–70% attributed alkaline activators total cost. was identified critical point both impact considerations energy consumption. While WCBP-rich samples exhibit 1.7–0.7% higher compared control mix (CM), their high strength make them technologically economically efficient mixes. In conclusion, portfolio techno-eco-efficiency affirms that mixes containing 40%, 30%, 20% are more than those 10% 0% WCBP, respectively.

Language: Английский

Citations

4
Fabrication and Performance of PVAc-Incorporated Porous Self-Standing Zeolite-Based Geopolymer Membranes for Lead (Pb(II)) Removal in Water Treatment DOI Open Access
Samar Amari, Mariam Darestani, Graeme J. Millar

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(9), P. 1155 - 1155

Published: April 24, 2025

This study explores the fabrication, structural characteristics, and performance of an innovative porous geopolymer membrane made from waste natural zeolite powder for Pb(II) removal, with potential applications in wastewater treatment. A hybrid incorporating polyvinyl acetate (PVAc) (10, 20, 30 wt.%) was synthesized thermally treated at 300 °C to achieve a controlled architecture. Characterization techniques, including Fourier-transform infrared spectroscopy (FTIR), revealed disappearance characteristic C=O C-H stretching bands (~1730 cm−1 ~2900 cm−1, respectively), confirming full degradation PVAc. Thermogravimetric analysis (TG) differential scanning calorimetry (DSC) indicated total mass loss approximately 14.5% sample PVAc 20 wt.%, corresponding decomposition water loss. Energy-dispersive (EDS) elemental mapping showed absence carbon residues post-annealing, further validating complete removal. X-ray diffraction (XRD) provided insight into crystalline phases raw structure. Once removal confirmed, second phase characterization assessed membrane’s mechanical properties filtration performance. The membrane, thickness 2.27 mm, exhibited enhanced properties, measured nano-indenter, showing hardness 1.8 GPa elastic modulus 46.7 GPa, indicating improved integrity. Scanning electron microscopy (SEM) well-defined network. Filtration evaluated using laboratory-scale dead-end setup optimal concentration determined be resulting permeation rate 78.5 L/(m2·h) 87% rejection initial 50 ppm. With increasing concentrations, flux rates declined across all membranes, while maximum achieved 200 FTIR EDS analyses confirmed adsorption onto zeolite-based matrix, uniform distribution surface. next step is evaluate multi-cation treatment environment, assessing sorption kinetics its selectivity efficiency removing various heavy metal contaminants complex systems.

Language: Английский

Citations

0
Optimizing concrete for circularity: a comparative life cycle assessment of geopolymer and ordinary concrete DOI

Omid Bamshad,

Amir Mohammad Ramezanianpour

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 7, 2024

Language: Английский

Citations

3
Structure and Properties Improvement by Recipe Factors of Geopolymer Basalt Fiber Reinforced Concrete for Building Enclosing Structures DOI Creative Commons
Kirill Zubarev, Evgenii M. Shcherban’, Sergey A. Stel’makh

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(3), P. 743 - 743

Published: March 9, 2024

The application of geopolymer concrete in buildings and structures is becoming widespread because its low cost high strength characteristics. At the same time, capabilities are not fully used, especially to strengthen flexural properties. article examines problems developing an effective composition based on ground granulated blast furnace slag (GGBS) by selecting optimal alkaline activator amount basalt fiber (BF). To determine degree effectiveness proposed formulation solutions, characteristics fiber-reinforced (FRC) were determined. It has been investigated most containing a NaOH solution with molarity 12 M. dosage BF 1.5% weight GGBS. increase compressive for FRC M/BF1.5, which combines parameters compared least 8 M/BF0 was 40.54% 93.75%, respectively, decrease water absorption 45.75%. obtained scientific result represents significant empirical basis future research field FRC. developed ready use practical construction.

Language: Английский

Citations

1
Revolutionary optimization: Synthetic fiber-reinforced geopolymer mortars with metazeolite and red mud for unmatched durability and sustainability DOI Creative Commons
Beyza Fahriye Aygün, Mücteba Uysal

Materials Today Sustainability, Journal Year: 2024, Volume and Issue: 29, P. 101062 - 101062

Published: Dec. 12, 2024

Language: Английский

Citations

1
Research on the Mechanism of Strength Improvement in Acid–Base-Activated Low Carbon Oil Absorbent Concrete DOI Open Access

Dongli Wang,

Zeyu Yang,

Haojie Zheng

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(9), P. 3661 - 3661

Published: April 26, 2024

The aim of this study is to improve the compressive strength oil absorbent concrete (OAC) and encourage its use in slope protection projects. This used fly ash slag produced thermal power plants substitute cement significant amounts prepare (OAC). water–cement ratios were set at 0.4, 0.5, 0.6 sand rates 30%, 35%, 40% investigate effects these factors on absorption properties concrete, variation rate over time, strengths 28 days, 60 90 days. was improved by incorporating seashell powder (SC), alkali-modified (SSC), acid–base-modified (CSC). results showed that optimal ratio for comprehensive performance while 0.35. Compared with ordinary 58.69%. decreased gradually time. However, time could be effectively extended addition a silane modifier. best method modification acid–base modification. reached 14.32 Mpa days 17.45 which 19.62% higher than OAC. Scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), X-ray diffraction (XRD) analyze microstructure It discovered inclusion CSC caused reaction hydrocalumite resulting formation alumohydrocalcite. Additionally, Ca(OH)2 facilitated hydration mineral admixtures like slag. At more amorphous gels (C-S-H, C-(A)-S-H) Aft produced. three components combined enhance bonding between cementitious materials aggregates, denser internal structure OAC improving strength. promotes

Language: Английский

Citations

0
Evaluation of Mechanical, Ecological, Economical, and Thermal Characteristics of Geopolymer Concrete Containing Processed Slag Sand DOI Open Access

M G Girish,

Kiran Kumar Shetty, Gopinatha Nayak

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(17), P. 7402 - 7402

Published: Aug. 28, 2024

This manuscript highlights the mechanical, economical, ecological, and thermal investigations performed on paving quality geopolymer concrete (PQGC) incorporating processed steel slag (PSS) as a substitute for river sand (RSa). The replacement of RSa with PSS ranged from 0 to 100% in PQGC mix. mix content exhibited enhanced geopolymerization, resulting denser more amorphous matrix. improved mechanical properties, increasing compressive strength by 10.9%, flexural 23.5%, splitting tensile 8.3%. led marginal reduction (embodied energy) EE CO2 emissions. However, compared conventional Pavement Quality Concrete (PQC) Fly Ash PQC (FPQC), was 44% 34%, while emissions were reduced 1.22 1.49 times. Despite these benefits, 19% 30% expensive than FPQC, respectively. Global Warming Potential (GWP) approximately one-third that FPQC at all levels when FPQC. Additionally, conductivity decreased k = 0.67 W/m °C 0.51 RSa, keeping cooler. Therefore, PSS, practically implemented, may help reduce surrounding temperatures. study concludes is feasible reliable alternative enhancing sustainability PQGC.

Language: Английский

Citations

0