Energy Storage and Saving, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 1, 2024
Language: Английский
Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 20, P. e02994 - e02994
Published: Feb. 20, 2024
Utilizing recycled fibers as reinforcement in cement-based matrices is an effective means of promoting waste recycling and adopting a circular economy approach the construction industry. Within this framework, potential reutilization textile residues can improve pre- post-cracking performance intended for building components with up to intermediate structural responsibilities (i.e., panels cladding elements buildings). This research focused on mechanical durability -through forced aging dry-wet freeze-thaw cycles- experimental characterization laminated fabric-reinforced cementitious (FRCMs) containing 4 6 nonwoven fabric layers obtained from end-of-life fire-protecting t-shirts. For purpose, both direct flexural tensile tests were conducted characterize composite. The 6-fabric produced Portland Cement (PC) matrix, after 28-day curing, led average values maximum strength 3.7 MPa associated toughness index superior 25 kJ/m2, mean modulus rupture 11.6 fracture energy 4.3 kJ/m2. After accelerated aging, developed composites decreased (on average, 40% 11% strength) due fiber embrittlement. To better understand aged composites, shredded recovered protective clothing (mainly consisting meta-aramid fibers) immersed binary matrix. Accordingly, properties 5 10 cycles studied. Based results, replacing partially PC by silica fume (between 30% 50%) was seen sustainable alternative more than 10%.
Language: Английский
Citations
8
Sustainability, Journal Year: 2024, Volume and Issue: 16(7), P. 2617 - 2617
Published: March 22, 2024
This paper introduces the comprehensive value function, a novel framework designed to address multi-dimensional challenges in sustainability assessment within decision-making processes. Multi-criteria methods based on multi-attribute utility theory excel at integrating environmental, social, and economic factors but typically focus positive neutral impacts. limitation often results oversight of critical negative consequences, thus restricting their effectiveness all-encompassing evaluations. The proposed addresses this gap by quantifying degree satisfaction across full spectrum impacts outcomes essential for holistic assessments. necessity model is highlighted shortcomings current practices, where adverse are frequently overlooked existing frameworks fail foresee repercussions various alternatives. By facilitating creation positive, negative, or piecewise functions, CVF provides reflection impacts, well-informed decisions. Integrating function into established models leads more balanced approach adept navigating intricate trade-offs inherent sustainable development. Organised systematically, presents its application domains, concluding section synthesising findings.
Language: Английский
Citations
8
Structures, Journal Year: 2024, Volume and Issue: 69, P. 107475 - 107475
Published: Oct. 5, 2024
Language: Английский
Citations
3
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 414, P. 134916 - 134916
Published: Jan. 18, 2024
The use of lime-based composites reinforced with fabrics made natural fibers, is a promising solution for the strengthening historical masonry structures owing to its moderate mechanical strength, similar color and chemical compatibility, avoiding damage on structure contributing crack-width control. In this study, new composite flax nonwoven mechanically characterized study reinforcement potential in terms stress distribution. To end, laminate plates lime/metakaolin matrix four six layers fabric were produced totally carbonated CO2 chamber. Both (flexural tensile) durability (against wet-dry cycles) properties subsequently assessed. Furthermore, Digital Image Correlation (DIC) was carried out tensile testing 6-layer displayed best performance (with flexural strengths approximately 5.3 MPa 2.5 MPa, respectively), followed by 5-layer 4-layer composites. DIC analysis revealed higher distribution composites, an increased number cracks, although having lower severity. As durability, decrease 30–45% observed 6–18% depending reinforcing layers. SEM refers fiber/matrix debonding as cause decrease. No has been fiber surface, which retains capacity. All strain-hardening behavior both unaged aged conditions. Study outcomes are intended serve basis creation future, compatible, reliable, sustainable system given application restoration structures.
Language: Английский
Citations
2
World Journal of Engineering, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 21, 2024
Purpose This study aims to optimize the energy consumption of residential buildings in mild and humid climates. It investigates use thermal insulation reduce load through simulation analysis. Design/methodology/approach A building located Rasht city, Iran (a climate zone), is simulated using DesignBuilder software. Subsequently, minimum resistance for external walls roof analyzed along with its impact on carbon emissions. Findings The results indicated a 26.5% reduction heat loss 14.2% due optimal insulation. Furthermore, led 19.2% cooling system use, 12% heating combined 15.3% total heating. Originality/value optimization process leads several benefits: reduced costs associated losses buildings, improved performance against atmospheric factors and, ultimately, across industry. research can be valuable various stakeholders, including construction industry sector, municipalities engineering systems, owners contractors environmental organizations. By implementing these findings, they improve state modern achieve greater efficiency.
Language: Английский
Citations
1
Rilem bookseries, Journal Year: 2024, Volume and Issue: unknown, P. 908 - 916
Published: Jan. 1, 2024
Language: Английский
Citations
0
Rilem bookseries, Journal Year: 2024, Volume and Issue: unknown, P. 482 - 492
Published: Jan. 1, 2024
Language: Английский
Citations
0
Construction and Building Materials, Journal Year: 2024, Volume and Issue: 440, P. 137474 - 137474
Published: July 17, 2024
Language: Английский
Citations
0
Advances in Civil Engineering, Journal Year: 2024, Volume and Issue: 2024(1)
Published: Jan. 1, 2024
Plant fibers have the ability to bridge crack propagation on a microscopic scale for microfibers and macroscopic macrofibers. Therefore, use of two or more fiber types in an appropriate combination can potentially improve overall properties cement composite as well promote green construction. The hybrid was cast using random orientation with fibers: Rhecktophyllum camerunense macrofiber Triumfetta pentandra microfiber. Cement mortar matrices were reinforced constant microfiber length 1 mm three different lengths 1.5, 3, 6 at varying contents 1%, 1.5%, 2.5% wt. physical characteristics assessed by porosity, density, water absorption. Mechanically, three‐point bending tests single‐edge notch (SENB) performed after 7 14 days curing. Mode I fracture behavior ( K IC ) modulus rupture (MOR) calculated per formulation. Physical experimental results reveal that there is correlation between rate absorption, loading composite. developed material presented multiple cracking under bending. There decrease MOR toughness values content They both increase value length. composites higher than unreinforced due powerful interfacial bond matrix. had least 0.442 MPa 694,000 N.m 1.5 , respectively, showing they are very reactive faults low stress levels.
Language: Английский
Citations
0
Published: Jan. 1, 2024
Language: Английский
Citations
0