Construction and Building Materials, Journal Year: 2024, Volume and Issue: 458, P. 139428 - 139428
Published: Dec. 18, 2024
Language: Английский
Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 1903 - 1903
Published: Feb. 24, 2025
The construction sector in the Kingdom of Saudi Arabia has shown notable growth and progress as seen by transformation outdated neighborhoods into modern smart infrastructure that aligns with 2030 vision nation. As a result this development trend, which is led Jeddah region, many older buildings are being demolished, significant amount concrete produced. Utilizing recycled aggregates from demolition waste been recognized an effective approach to addressing current environmental problems our world faces. An appropriate process treatment techniques must be incorporated production aggregate order enhance its properties optimize use. purpose study determine potential benefits alkaline Ca(OH)2 activated fly ash Class F (FAF) for various mixes composed using (RCA). Seven were developed effects several factors on (RCA), including type aggregate, activator used, impact filler material. assessed how different forms affected physical characteristics. compressive strength, flexural indirect tensile pull-out strength was measured. water absorption (JRCA) variable (VRCA) evaluated. Activated JRCA drops 1.7% while inactivated 3.95%. AIV values rise 18.4 NA 13. same trend complies findings, demonstrated performance other characteristics under significantly impacted utilized mix design. Among these, showed promising results could lead wider use civil engineering applications.
Language: Английский
Citations
1
Construction and Building Materials, Journal Year: 2025, Volume and Issue: 471, P. 140671 - 140671
Published: March 10, 2025
Language: Английский
Citations
1
Discover Sustainability, Journal Year: 2024, Volume and Issue: 5(1)
Published: Nov. 20, 2024
Abstract Increasing of plastic waste threatening ecosystems globally, this experimental work investigates recycled plastics as sustainable aggregate replacements in pervious concrete. Pervious concrete allows water passage but has installation/maintenance difficulty due to high weight. This research addresses the lack eco-friendly lightweight solutions by assessing physical and mechanical performance mixes with 100% traditional percentages. Density reduced 12% using a mix, achieving 1358 kg/m 3 compressive strength 3.92 MPa, adequate for non-structural applications. A 7.8% decrease absorption versus conventional signifies retained porosity permeability despite aggregates. Though early material limitations increase costs over 199.32%, show viability effective, substitutes natural aggregates With further availability affordability improvements, these recyclable can enable significantly greener construction practices. Findings provide key insights on balancing structural requirements, eco-friendliness infiltration capacity plastic-based broader adoption. The examines durability characteristics Light-Weight Concrete (LWPC) composed entirely aggregate. It also economic potential urban cost assessment reveals long-term environmental advantages, even though initial expenses are higher. Additionally, study considers an approach that combines plant growth promote greater sustainability.
Language: Английский
Citations
4
Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 704 - 704
Published: Feb. 5, 2025
Traditional pervious concrete poses significant challenges in optimizing both mechanical properties and permeability. To address this issue, a novel type of self-compacting recycled (SCRPC) featuring vertical penetrating channels has been developed. The were created by pulling out the reinforcement pre-drilled holes that artificially mold, after had poured. However, whether superior durability can be employed different sulfate drying–wetting situations remains to investigated. This study explored resistance permeability SCRPC under five exposure regimes: full soaking Na2SO4 solution with ratios 3:18, 9:12, 18:3; semi-soaking solution; MgSO4 solution. results showed soaked suffered largest compressive strength loss (13.4%) 150 cycles. Furthermore, as ratio increased, degradation increased. Despite comparable relative dynamic modulus elasticity (95.54%) (92.89%), ettringite gypsum identified predominant deterioration products SCRPC, respectively. In contrast two stages for traditional concrete, effective porosity was divided into three during attack: an initial rapid decline stage, subsequent increase final slow stage. coefficient varied from 6.00 6.82 mm/s exposures. summary, permeability, it could more applicable environments containing compared MgSO4. provides basic data enhancement application artificial channels.
Language: Английский
Citations
0
Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112531 - 112531
Published: April 1, 2025
Language: Английский
Citations
0
Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)
Published: March 19, 2025
This study presents a sustainable method for recycling Ordinary Portland cement concrete (OPCC) using geopolymer technology, reducing the need new and aggregates. By including geopolymerization, process offers significant ecological economic advantages over conventional methods. Crushed pulverized waste was used as recycled granulate (RA) binder, clay brick powder (RBP) an additive. Based on results, incorporation of RA into (GRC) improved compressive strength by 11.7%, with maximum 44.3 MPa tensile 4.77 MPa. Replacing (RCP) 5% wt% resulted in 21% reduction (35 MPa) 25.3% (3.56 MPa). A further increase RBP content to 15 reduced 27.65 (37.5% reduction). The directly effects flowability improves appearance GRC reduces cracks. When comparing total eco-cost, (128.9 €/m3) proved be more environmentally friendly than OPCC (140.4 €/m3). developed meets construction standards promising alternative exceeds terms eco-cost sustainability.
Language: Английский
Citations
0
Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04627 - e04627
Published: April 1, 2025
Language: Английский
Citations
0
Materials, Journal Year: 2024, Volume and Issue: 17(21), P. 5191 - 5191
Published: Oct. 24, 2024
In order to improve the quality of solid waste utilization, this study simultaneously used recycled coarse aggregate and fine prepare concrete, with fly ash partially replacing cement as a binder. After particle gradation was artificially adjusted into continuous gradation, effects accelerated carbonation on performance microstructure concrete were studied. The microstructural change analyzed using mercury intrusion porosimetry scanning electron microscopy-energy dispersive spectroscopy. Additionally, environmental benefits evaluated based carbon emissions life cycle assessment method. experimental results indicate that can increase compressive strength by up 13%, its becomes more compact after carbonation. are reduced than 13% 20% ash, contributing sustainable development. optimal replacement rate should be controlled under 15% when both aggregates used.
Language: Английский
Citations
1
Buildings, Journal Year: 2024, Volume and Issue: 14(11), P. 3419 - 3419
Published: Oct. 27, 2024
In recent years, various aspects of research related to pervious concrete (PC) have progressed rapidly, and it is necessary summarise generalise the latest results. This paper reviews compares raw materials concrete, examining elements such as porosity, permeability, mechanical properties, durability. According comparisons, we put forward an ideal aggregate model with Uneven Surface, which may reinforce properties. By summarising important issues aggregate, particle size, water–cement ratio, additives admixtures, mixing ratio design, moulding, other factors that affect new design methods are proposed. A effective stress based on continuous porosity Terzaghi developed fit principle better. Finally, by frontiers key need be addressed in future scientific raised.
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 458, P. 139428 - 139428
Published: Dec. 18, 2024
Language: Английский
Citations
0