Mechanical and Compatibility Properties of Alkali-Activated Repair Mortar Reinforced with Microfibers

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04717 - e04717

Published: April 1, 2025

Language: Английский

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Development of sustainable alkali-activated slag/fly ash mortars: An effective and eco-friendly approach to shrinkage mitigation

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 457, P. 139375 - 139375

Published: Dec. 1, 2024

Language: Английский

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Synergistic Effect of Steel and Pva Fibers on Mechanical and Microstructural Performance of Ceramic Waste-Ggbs Based Green Composites

Published: Jan. 1, 2025

Language: Английский

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Evaluation of long-term properties and life cycle assessment of alkali-activated concrete with varying fiber inclusions

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 431, P. 136437 - 136437

Published: May 11, 2024

Language: Английский

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Effect of glass and nylon fibers on drying shrinkage of alkali activated blast furnace slag mortars

European Journal of Environmental and Civil engineering, Journal Year: 2024, Volume and Issue: 29(2), P. 295 - 308

Published: Aug. 13, 2024

The environmental consequences of Portland cement (PC) manufacturing have prompted the exploration alternative binders, such as alkali activation blast furnace slag (BFS), which is generated a byproduct during extraction iron. While alkali-activated (AAS) binders some benefits over regular PC they also suffer from disadvantages significant drying shrinkage. study investigated impact Na dosage and curing conditions on mortar (AASM). consistency specimens was tested for fresh, hardened properties, conducted. optimum were selected. In second stage, 0.1% 0.2% glass nylon fibers added to selected mortar. Consistency, mechanical, durability properties tests conducted fiber mortars. results showed that increasing content increased compressive flexural strengths AASM specimens. Thermal provided high strengths, whereas addition reduced water absorption shrinkage value by 26.82 % with 0.2 volume compared without fibers.

Language: Английский

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Performance optimisation of alkali-activated slag ultra-low carbon concrete (AAS-ULCC) for shield tunnel segments by steel fibres

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: unknown, P. 144236 - 144236

Published: Nov. 1, 2024

Language: Английский

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Evaluation of Long-Term Properties and Life Cycle Assessment of Alkali-Activated Concrete with Varying Fiber Inclusions

Published: Jan. 1, 2024

The potential for using alkali-activated concrete (AAC) as a sustainable substitute Portland cement (PC) is topic of ongoing research interest. However, widespread application this alternative restricted to precast applications and non-structural elements due lack data regarding its long-term characteristics. uncertainties in the raw material composition, reportedly low tensile strength fly ash-based AAC, relevant standard codes practice further inhibit wider industrial usage AACs. Fiber inclusions enhance properties traditional PC concrete. Moreover, replacement ash with ground granulated blast furnace slag (GGBS) overcomes need thermal curing Hence, present study aimed at investigating mechanical ambient-cured fiber-reinforced (FRAAC) GGBS sole precursor. Four different types fibers, viz., steel (SF), polyvinyl alcohol (PVAF), polypropylene (PPF) glass (GF) are used reinforcements AAC. Tests compressive ( ), splitting (fsp) flexural (fr) conducted FRAAC containing varying fiber contents 0.1% 0.3%. findings demonstrated that additions do not have any noticeable influence on relative plain mix, fsp fr FRAACs were enhanced by up 32% 29%, respectively. formation hardened calcium aluminosilicate matrix evolution fiber-matrix bonding over time was evident from scanning electron microscopy (SEM) images. related molecular bonds period 7-d 360-d identified through mineralogical chemical analyses. Furthermore, validate environmental sustainability, life cycle assessments conducted. AACs exhibited least 41% lesser impacts than ecosystem incorporating GF had about 10% greater mix.

Language: Английский

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Effect of different fibre reinforcements on the strength and acid attack resistance of alkali-activated concrete

Magazine of Concrete Research, Journal Year: 2024, Volume and Issue: 76(23), P. 1370 - 1383

Published: June 26, 2024

The effects of steel, polyvinyl alcohol, polypropylene and glass fibre reinforcements on alkali-activated concrete (AAC) were investigated by conducting various mechanical strength tests. dosage was 0.1–0.3% volume AAC. Furthermore, the acidic exposure fibre-reinforced concretes (FRAACs) examined immersing samples in 10% v/v solutions hydrogen chloride, sulfuric acid or nitric for 28 days. It found that additions improved compressive flexural up to 13% 27%, respectively, while modulus elasticity significantly 52%. Acid attack tests AAC specimens demonstrated be highly detrimental chemical properties AACs. loss FRAAC after 50% less than plain glass-fibre-reinforced AACs resistant attack, whereas steel-fibre-reinforced had resistance. These findings further validated scanning electron microscopy, X-ray diffraction Fourier-transform infrared spectroscopy, which showed changes microstructure subjected environments. Overall, durability

Language: Английский

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Parameter investigation and efficiency evaluation of unified phase-field theory in mesoscale fracture analysis of fully-graded concrete under uniaxial tension

Engineering Fracture Mechanics, Journal Year: 2024, Volume and Issue: 314, P. 110696 - 110696

Published: Dec. 9, 2024

Language: Английский

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Effects of cellulose fiber on shrinkage, anticrack performance, and mechanical properties of concrete

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 451, P. 138824 - 138824

Published: Oct. 28, 2024

Language: Английский

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