Seawater-mixed alkali-activated materials: a state-of-the-art review

Journal of Materials Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 17, 2025

Язык: Английский

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BFRP bars reinforced geopolymer-based coral aggregate concrete beams with sustainable and high seawater erosion resistance: Flexural durability, economic, and ecological analysis

Engineering Structures, Год журнала: 2025, Номер 330, С. 119910 - 119910

Опубликована: Фев. 16, 2025

Язык: Английский

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Prediction of bond strength and failure mode of FRP bars embedded in UHPC or UHPSSC utilising extreme gradient boosting technique

Composite Structures, Год журнала: 2024, Номер 346, С. 118437 - 118437

Опубликована: Июль 31, 2024

Язык: Английский

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Efficient utilization of coral waste for internal curing material to prepare eco-friendly marine geopolymer concrete

Journal of Environmental Management, Год журнала: 2024, Номер 368, С. 122173 - 122173

Опубликована: Авг. 11, 2024

Язык: Английский

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Synthesis of eco-sustainable seawater sea-sand geopolymer mortars from ternary solid waste: Influence of microstructure evolution on mechanical performance

Sustainable materials and technologies, Год журнала: 2024, Номер 41, С. e01056 - e01056

Опубликована: Июль 22, 2024

Язык: Английский

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Synergistic effects of fiber hybridization on the fracture toughness of seawater sea-sand concrete

Construction and Building Materials, Год журнала: 2024, Номер 444, С. 137845 - 137845

Опубликована: Авг. 11, 2024

This study investigates the fracture behavior of fiber-reinforced seawater sea-sand concrete (FR-SWSSC), focusing on impact fiber hybridization toughness properties and potential synergistic effects. The employed micro-fibers including short polypropylene (PPS), polyvinyl alcohol (PVA), basalt fibers (BF), macro-fibers consisting long (PPL) twisted (TPPL) fibers. results indicated that macro-fibers, PPL TPPL, significantly enhanced post-peak SWSSC, increasing energy by 144 % 93 respectively, while alone showed negligible behavior. Micro-fiber both flexural strength with hybrid PPS/BF PPS/PVA demonstrated notably improved 176 290 %, compared to mono PPS. Hybrid combinations micro/macro-fibers a effect toughness, where TPPL bridged larger cracks, activating for dissipation. Moreover, strong interfacial bond PVA BF matrix macro-fiber bonding overall resistance. By exploring discrete in enhancing performance FR-SWSSC, this research promotes sustainable construction practices addressing inherent challenges SWSSC.

Язык: Английский

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Experimental study on fiber-reinforced cement tailings sand-based grouting material preparation and factors influencing the grouting effect

Construction and Building Materials, Год журнала: 2024, Номер 438, С. 137104 - 137104

Опубликована: Июнь 18, 2024

Язык: Английский

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Durability and microstructure of waste slurry based geopolymer concrete

Journal of Materials Research and Technology, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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Exploring the Potential of Posidonia oceanica Fibers in Eco-Friendly Composite Materials: A Review

Journal of Marine Science and Engineering, Год журнала: 2025, Номер 13(1), С. 177 - 177

Опубликована: Янв. 19, 2025

The growing demand for sustainable materials has driven the exploration of natural fibers as eco-friendly alternatives to synthetic reinforcements composites. This study investigates potential Posidonia oceanica, an abundant marine biomass, which is often be stacked on backshore and used so far energy recovery low-value applications, a filler possible reinforcement in cementitious polymer Most applications are concentrated Mediterranean area focused construction industry. However, its introduction composites, especially source cellulose or combination with use bio-based matrices, can also proposed. With this aim, physical chemical properties oceanica need characterized, their compatibility various matrices needs evaluated. Experimental results demonstrate that fibers, when treated alkali silane, combining both treatments, exhibit mechanical quite comparable other namely those obtained from grass species. As any type waste, yet more interest wide accumulation over coastal line, composites may contribute reducing environmental footprint these materials, aligning circular economy principles. review highlights dual benefits utilizing biomass by advancing material sustainability while not being detrimental waste management.

Язык: Английский

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Advances in using seawater in slag-containing cement systems

Journal of Building Engineering, Год журнала: 2024, Номер 96, С. 110386 - 110386

Опубликована: Авг. 8, 2024

The use of seawater as mixing water in concrete is motivated by an increasing danger freshwater shortages. factors restricting its include a high risk structure degradation well steel reinforcement corrosion initiated the chlorides and sulphates seawater. objective this study to evaluate potential ternary cementitious systems containing substitution clinker constituent cements with ground granulated blast furnace slag (GGBFS) at rate 45 wt% 85 zeolite (10 wt%) mixed Moreover, effects alkaline activators were evaluated method compensate low strength volume slag-zeolite-cement hydration process was means calorimetry, X-ray diffraction (XRD) scanning electron microscopy (SEM), supplemented compressive development (2, 7, 28 days) evaluation. It found that presence GGBFS seawater-mixed systems, promotes increase low-calcium silicate hydrate gel-like phases, which (in addition layered double hydroxide phases) bind Cl-- SO42--ions However, replacement level (85 accelerating effect limited resulting slow gain. proposed activation, allowed enhancement, but also satisfied conditions for complete binding SO42− -ions, due formation zeolite-like aluminosilicate hydrates resultant cement matrix. natural accelerates reactions crystallization processes systems. As outcome, synergistic alkali-activation, blend 5 Portland exhibited only 24 % lower days when compared freshwater-mixed (90 – reference mix.

Язык: Английский

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