Study on the Mechanical Properties, Wear Resistance and Microstructure of Hybrid Fiber-Reinforced Mortar Containing High Volume of Industrial Solid Waste Mineral Admixture

Wu, Hao; Jia, Yanmin; Yuan, Zhu; Li, Zhijia; Sun, Tao; Zhang, Jiahao

doi:10.3390/ma15113964

Cited by 4 publications

(2 citation statements)

References 51 publications

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“…Penelitian diawali dengan melakukan pengujian kandungan kimia yang ada di fly ash dan bottom ash. Kemudian dilanjut pengujian pasir menggunakan sieve shaker untuk mengetahui gradasi yang ada dalam pasir tersebut, hal ini dilakukan untuk mengetahui bahwa material layak digunakan atau tidak [10]. Setelah semua material telah memenuhi standar material, selanjutnya dilakukan pembuatan benda uji berbentuk kubus dengan mutu rencana 15 MPa dan memiliki ukuran 5 x 5 x 5 cm [11][12] [13].…”

Section: Metode Eksperimental Dilakukan DI Laboratorium Bahan Konstru...unclassified

Menentukan Proporsi Campuran Mortar yang Tepat dengan Pemanfaatan Limbah Fly Ash dan Bottom Ash Ditinjau dari Kuat Tekan

et al. 2022

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The increase in the amount of fly ash and bottom ash waste every year requires proper management and utilization. In the manufacture of concrete, the use of fly ash and bottom ash can be used as a substitute material. However, it has not been utilized in making species in construction. This is because the exact proportion has not been obtained. The purpose of this study was to determine the correct proportions in the mortar with a mixture of fly ash and bottom ash. The research was carried out using experimental methods in the laboratory with cube-shaped specimens (5 x 5 x 5 cm) with 2 kinds of ratios between binder and fine aggregate, namely 1:2 and 1:4, each having a different percentage of sand and bottom ash, starting from from 20% to 80%. While the fly ash used is 10%. Tests carried out included material tests (Metal Oxidation Concentration Test and Sieve Analysis), and compressive strength tests (14 and 28 days). The results showed that the highest mortar compressive strength was at a ratio of 1:2 with fly ash as a cement mixture of 10% and bottom ash as a sand mixture of 20% with a compressive strength value of 16.8 MPa at the age of the specimen 28 days. The compressive strength value is in accordance with the provisions of SNI 03-6825-2002. The results of this study can be used by the community in making plaster work and can reduce the amount of waste that exists today.

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Section: Metode Eksperimental Dilakukan DI Laboratorium Bahan Konstru...unclassified

Menentukan Proporsi Campuran Mortar yang Tepat dengan Pemanfaatan Limbah Fly Ash dan Bottom Ash Ditinjau dari Kuat Tekan

et al. 2022

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“…Silica fume, mineral powder, and fly ash are all large-scale industrial solid wastes, which can be ground into powder form and mixed with gypsum to prepare composite cementitious materials [7]. Among them, mineral powder has a similar chemical composition to ordinary silicate cement and has similar self-hydration and self-hardening characteristics.…”

Section: General Introduction 1introductionmentioning

confidence: 99%

Effects of Different Admixtures on the Mechanical and Thermal Insulation Properties of Desulfurization Gypsum-Based Composites

et al. 2023

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The single-factor experiments are designed to quantitatively investigate the effects of silica fume, mineral powder, and fly ash on the mechanical and thermal insulation properties of desulfurization gypsum-based composites (DGCs). The effect mechanism is discussed from the microscopic morphology of the internal structure, and the corresponding relationship between the strength and thermal conductivity of this material is evaluated by the regression model. The results show that the admixture of silica fume, mineral powder, and fly ash improves the strengths and thermal insulation properties of DGCs, with the order of influence silica fume > mineral powder > fly ash. The optimal 28 d compressive strength and thermal conductivity are 34.17 MPa and 0.2146 W/(m·K), respectively, at a silica fume dosage of 35%. The enhancement effects on the strength and thermal insulation performance of DGCs are attributed to the increase in the hydration products C-S-H gel and Aft. Moreover, the thermal conductivity linearly decreases with the increase in the compressive strength of DGC after adding silica fume, mineral powder, and fly ash. The linear regression models exhibit good precision for evaluating the corresponding relationships between the compressive strength and thermal conductivity of DGCs with different admixtures.

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Improving concrete structures with engineered cementitious composites and kevlar sheets: an affordable retrofitting solution for earthquake resistance

Anbazhagan,

Pachaiappan

2024

Mater. Res. Express

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This paper outlines experimental and analytical studies focused on strengthened concrete specimens using Engineered Cementitious Composites and use of Kevlar sheets is highlighted as one of the most effective techniques for achieving the desired structural reinforcement and extending the lifespan of structures. The research examines the mechanical properties of retrofitted concrete and material characterizations of ECC such as Scanning Electron Microscopy and Energy dispersive X-ray analyses were also carried out to corroborate the durability properties of ECC and Kevlar-wrapped specimens, specifically assessing compressive, tensile, and flexural strength. In this study, fiber-reinforced cementitious materials featuring a 2% volume fraction of hybrid fibers comprising hooked-end steel and polyvinyl alcohol fibers were employed to strengthen the concrete structure. This additional layer enhances tensile strength and aids in crack management, necessitating proper curing to ensure strength gain over a specified duration. Kevlar fabric sheets are carefully applied to the ECC surface using resin to create a strong bond between the Kevlar and the underlying material, resulting in a durable retrofitted structure. Preliminary experimental data supported numerical modelling of the specimens using finite element analysis. The numerical results regarding the retrofitted strength of hardened concrete were compared with experimental outcomes. The findings showed that the maximum load of the strengthened samples increased by 6.5%. Additionally, the retrofitted strength prior to complete failure rose by 10.6%. In conclusion, the integration of hybrid fibers for reinforcement and Kevlar for retrofitting proves to be a cost-effective and straightforward approach.

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Study on the Mechanical Properties, Wear Resistance and Microstructure of Hybrid Fiber-Reinforced Mortar Containing High Volume of Industrial Solid Waste Mineral Admixture

Cited by 4 publications

References 51 publications

Menentukan Proporsi Campuran Mortar yang Tepat dengan Pemanfaatan Limbah Fly Ash dan Bottom Ash Ditinjau dari Kuat Tekan

Menentukan Proporsi Campuran Mortar yang Tepat dengan Pemanfaatan Limbah Fly Ash dan Bottom Ash Ditinjau dari Kuat Tekan

Effects of Different Admixtures on the Mechanical and Thermal Insulation Properties of Desulfurization Gypsum-Based Composites

Improving concrete structures with engineered cementitious composites and kevlar sheets: an affordable retrofitting solution for earthquake resistance

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