Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 99, P. 111525 - 111525
Published: Dec. 9, 2024
Language: Английский
Applied Sciences, Journal Year: 2025, Volume and Issue: 15(3), P. 1270 - 1270
Published: Jan. 26, 2025
In recent decades, rapid urbanization has generated a large amount of waste soft soil and construction debris, resulting in severe environmental pollution posing significant challenges to engineering construction. To address this issue, study explores an innovative approach that synergistically applies recycled fine aggregate (RFA) stabilizers improve the mechanical properties soil. Through laboratory experiments, systematically examines effects different mixing ratios RFA (20%, 40%, 60%) (10%, 15%, 20%) with red clay. After standard curing, samples underwent water immersion maintenance for varying durations (1, 5, 20, 40 days). Unconfined compressive strength (UCS) tests were conducted evaluate performance samples, mechanisms further analyzed using scanning electron microscopy (SEM) particle size distribution (PSD) analysis. The results indicate optimal is achieved 20% stabilizer, reaching highest UCS value after days immersion. This improvement primarily attributed formation dense reticulated structure, where particles are effectively encapsulated by clay stabilized hydration products from forming robust structural system. Unconsolidated undrained (UU) reveal peak deviatoric stress increases confining pressure stabilizer content but decreases when excessive added. Shear parameter analysis demonstrates both internal friction angle (φ) cohesion (c) closely related ratios, best observed at RFA. PSD confirms increasing enhances aggregation, while SEM observations visually illustrate denser microstructure. These findings provide feasible solution treatment resource utilization as well critical technical support theoretical guidance geotechnical practices high-moisture environments.
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2025, Volume and Issue: 471, P. 140705 - 140705
Published: March 8, 2025
Language: Английский
Citations
0
E3S Web of Conferences, Journal Year: 2025, Volume and Issue: 621, P. 01013 - 01013
Published: Jan. 1, 2025
With growing environmental concerns over the depletion of natural resources and adverse impact excessive sand mining, there is an increasing demand for sustainable alternatives in concrete production. This study investigates performance incorporating recycled coarse aggregate (RCA) sea as replacements aggregates, aiming to reduce while maintaining strength durability. Recycled addresses waste management issue construction, offers a plentiful alternative river sand, though it requires treatment mitigate chloride contamination. The experimental program included comprehensive evaluation properties, such workability, compressive strength, water absorption, porosity, resistance aggressive environments. results showed that use RCA slightly reduced workability but had minimal on especially mixes with treated (R40-T). improved enhanced durability by reducing acid sulphate attacks. mix R40-T-30 demonstrated best overall terms both demonstrates combination provides solution production, balancing benefits structural performance.
Language: Английский
Citations
0
Journal of Engineering and Applied Science, Journal Year: 2025, Volume and Issue: 72(1)
Published: March 29, 2025
Abstract Recycled aggregate (RA) made from construction waste has limited application due to its high porosity, numerous cracks, and other disadvantages such as reduced concrete strength when using aggregate). In this paper, carbonated recycled (CRA) was obtained by carbonating aggregate, natural (NA) in polyurethane mortar (PUM) replaced at different ratios. The physical changes pore structure of RA before after carbonation, the mechanical properties (compressive flexural strength) PUM, three-point bending bond performance were systematically investigated. compactness PUM detected ultrasonic velocity (UPV) test. change mechanism microstructure revealed scanning electron microscopy (SEM). results show that replacement rate is 50%, compressive increased 7.32% 15.83%, respectively, 14.19%, all which are greater than increase a 25%. P with decreased, but generated calcium carbonate carbonation treatment can fill surface pores enhance CRA, test pieces same ratio improved compared those RA.
Language: Английский
Citations
0
Resources Conservation and Recycling, Journal Year: 2025, Volume and Issue: 219, P. 108278 - 108278
Published: April 4, 2025
Language: Английский
Citations
0
Energy and Buildings, Journal Year: 2025, Volume and Issue: 341, P. 115831 - 115831
Published: May 5, 2025
Language: Английский
Citations
0
CivilEng, Journal Year: 2025, Volume and Issue: 6(2), P. 24 - 24
Published: May 6, 2025
Pavement deterioration is often the result of intense traffic and increased runoff from storms, floods, or other environmental factors. A practical solution to this challenge involves use permeable pavements, such as interlocking concrete pavement (PICP), which are designed effectively manage water while supporting heavy traffic. This research investigates effectiveness PICP in two distinct surface patterns: stretcher bond 45° herringbone, by assessing their performance terms infiltration using different methods. The first approach has been conducted experimentally a laboratory apparatus simulate rainfall. Various conditions were applied during tests, including longitudinal (L-Slope) transverse (T-Slope) slopes (0, 2, 4%) rainfall intensities (40 80 L/min). second implemented theoretically Surfer 2.0 software distribution infiltrated underneath layers PICP. Moreover, behavior analyzed statistically artificial neural networks (ANNs). results indicated that at intensity 40 L/min, equal was observed both patterns on 0% 4% T-Slope. However, herringbone showed better 8% Additionally, L/min rainfall, L-Slope for also demonstrated higher T-Slope, trend continued increased. with pattern exhibited superiority reducing compared pattern. statistical models demonstrate high accuracy, evidenced correlation coefficient (R2) values 99.97% 97.32%, respectively, confirms validity. Despite variations between forms PICP, strongly endorsed excellent alternatives conventional pavement.
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 449, P. 138417 - 138417
Published: Sept. 28, 2024
Language: Английский
Citations
2
Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1)
Published: Dec. 17, 2024
Construction and demolition (C&D) waste management is a pressing environmental concern in developing countries like Nigeria, where inadequate infrastructure weak regulatory enforcement create significant challenges. This study provides detailed analysis of C&D practices identifying key factors influencing these major barriers to sustainability. Data were gathered from surveys interviews with 150 stakeholders, including contractors, engineers, policymakers, managers. The data involved both quantitative qualitative techniques provide comprehensive understanding findings reveal heavy reliance on landfills, driven by high costs, insufficient recycling facilities, economic disincentives for sustainable practices. A critical gap was noted between the awareness existing regulations their enforcement, indicating need stronger frameworks more consistent enforcement. multiple regression demonstrated that frameworks, socio-economic factors, education levels significantly affect practices, highlighting importance promoting emphasizes an integrated approach improve advocating enhanced measures, development, continuous training programs. These offer valuable insights policymakers industry suggesting targeted strategies overcome identified foster Future research should address underrepresented regions ensure equitable improvements nationwide, ultimately supporting sustainability growth.
Language: Английский
Citations
1
Lecture notes in civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 77 - 85
Published: Oct. 22, 2024
Language: Английский
Citations
0