Utilization of natural sisal fibers to manufacture eco-friendly ultra-high performance concrete with low autogenous shrinkage

Ren, Guosheng; Ye, Bin; Ren, Miao; Gao, Xiaojian

doi:10.1016/j.jclepro.2021.130105

Cited by 78 publications

(18 citation statements)

References 60 publications

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“…Neste contexto, compósitos de matriz de cimento com incorporação de materiais lignocelulósicos, como de espécies de paricá (Schizolobium amazonicum) e embaúba (Cecropia hololeuca) [2], maçaranduba (Manilkara salzmanni), angelim pedra (Hymenolobium petraeum), cedro (Cedrela fissilis) e cedrinho (Erisma uncinatum Warm) [1], coco (Cocos nucifera) [3], pinheiro de masson (Pinus massoniana) [4], sisal (Agave sisalana) [5], matamatá-branco (Eschweilera coriaceae), saboarana (Swartzia recurva), maçaranduba (Manilkara amazônica) e abiurana (Pouteria guianensis) [6], popularmente conhecidos como compósitos de "cimento-madeira", vêm se destacando pois originam produtos com potencial de aplicação para suas respectivas finalidades [1][2][3][4][5][6].…”

Section: Introductionunclassified

Efeito de diferentes espécies de madeira e bambu na hidratação de matrizes à base de cimento Portland

et al. 2022

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RESUMO O presente trabalho tem como objetivo analisar o efeito de diferentes espécies de madeiras e de bambu (Pinus taeda, Cereus jamacaru e Bambusa vulgaris) na hidratação de matrizes cimentícias. Para tanto, os materiais lignocelulósicos foram moídos e caracterizados antes e depois de tratamento em água quente. Posteriormente, o efeito da adição de diferentes níveis (5, 10 e 33,3%) de madeiras, pré-tratadas ou não, em pastas de cimento foram analisados a partir dos ensaios de calorimetria isotérmica e termogravimetria. Os resultados demonstraram que as partículas de cada espécie lignocelulósica apresentaram um aumento das propriedades de umidade e absorção concomitante a diminuição de suas densidades e níveis de extrativos a partir do pré-tratamento aplicado. Os outros componentes químicos destes elementos, majoritariamente, todavia, não foram afetados. Por outro lado, foi observado que quanto maior o teor de tais materiais lignocelulósicos, pré-tratados ou não, nas matrizes de cimento, maior o impacto na hidratação do cimento, segundo o ensaio de calorimetria. Já com relação ao resultado do ensaio de termogravimetria observou-se uma tendência geral, com ou sem pré-tratamento de partículas ou adição de água de compensação, de aumento dos produtos hidratados, fato atribuído, principalmente, a presença de água livre e gases nos materiais lignocelulósicos.

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Section: Introductionunclassified

Efeito de diferentes espécies de madeira e bambu na hidratação de matrizes à base de cimento Portland

et al. 2022

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“…Fiber production was 281,000 tons worldwide in 2013, with Brazil generating 150,584 tons. Tanzania (34,875 tons per year), Kenya (28,000 tons per year), Madagascar (18,950 tons per year), China (16,500 tons per year), Mexico (12,000 tons per year), and Haiti (9000 tons per year) all produce sisal. It is economically possible for the country's underdeveloped northeast religion, which supports roughly 800,000 people.…”

Section: Sisal Fibers (Ssf)mentioning

confidence: 99%

“…Sisal fibers may be added to cement to slow down the cement's hydration process and to extend the setting durations [34]. Natural fiber composites are increasingly preferred over synthetic fiber composites due to inherent benefits, including affordability and environmental friendliness [35].…”

Section: Sisal Fibers (Ssf)mentioning

confidence: 99%

Concrete Reinforced with Sisal Fibers (SSF): Overview of Mechanical and Physical Properties

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Concrete is a commonly used building material; however, it is subject to abrupt failure and limited energy absorption when yielding. The use of short discrete fibers has displayed a lot of potential in overcoming these issues. Sisal is a natural fiber that is renewable, inexpensive, and readily accessible. SSF is a potential reinforcement for use in concrete because of its cheap cost, low density, high specific strength and modulus, negligible health risk, easy accessibility in certain states, and renewability. In current centuries, there has been growing importance in discovering new uses for SSF-reinforced concrete, which is normally utilized to make ropes, mats, carpets, and other decorative items. This article gives an overview of current advancements in SSF and composites. The qualities of SSF, the interface between SSF and the matrix, and SSF-reinforced properties such as fresh, mechanical strength, and durability have all been examined. The results show that SSF increased strength and durability while decreasing its flowability. The review also provides suggestions for further work.

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“…However, the amount of each component changes significantly with the fiber content. e cellulose in the cotton/linen blended fiber selected for these experiments is, molecularly speaking, a macropolymer with a polysaccharide structure (C 6 H 10 O 5 ), which decomposes into a reducing polyhydroxy aldehyde (C 6 H 12 O 6 ) during hydration [27]. e addition of the reducing agent inhibits the alkali-aggregate reaction of the active silica and oxides during the hydration of the cementsandy soil mixture, causing a progressive increase in the quartz content with the fiber content.…”

Section: Analysis Of Impacts Of Fiber Content On Cement-sandy Soilmentioning

confidence: 99%

Experimental Investigation on Microhydration and Micromechanical Properties of Cement-Sandy Soil Mixtures Reinforced with Cotton/linen-blended Fiber

Ouyang

Wang

Yang

et al. 2022

Advances in Materials Science and Engineering

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The micro-hydration degree plays a significant role in the strength of cement-sandy soil mixtures. The present study used cement-fiber-sandy soil mixtures in which the fiber was sourced from waste cotton/linen-blended fabric to investigate the impacts of different levels of fiber content on the hydration mechanisms and micromechanical performance. Experiments using scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) were carried out to determine how the component content of the different constituents changed with the fiber content (0%, 0.5%, 1.0%, and 1.5%) during the microhydration of the mixtures. A comparative analysis of the strength characteristic curves and the tensile strength variations for different groups of reinforced cement-sandy soil mixtures were conducted by performing triaxial shear tests. The results show that the peak unconfined compressive strength of the mixtures gradually increases with the quartz content of the matrix. The compressive strength of the matrix reaches a peak of 1.5938 MPa, an increase of 24.17%, when the cement and fiber contents were 3% and 1.5% (weight), respectively, with a fiber length of 9 mm. This paper has reference values for the green reinforcement of cement-sandy soil mixtures in the development of underground space.

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Utilization of natural sisal fibers to manufacture eco-friendly ultra-high performance concrete with low autogenous shrinkage

Cited by 78 publications

References 60 publications

Efeito de diferentes espécies de madeira e bambu na hidratação de matrizes à base de cimento Portland

Efeito de diferentes espécies de madeira e bambu na hidratação de matrizes à base de cimento Portland

Concrete Reinforced with Sisal Fibers (SSF): Overview of Mechanical and Physical Properties

Experimental Investigation on Microhydration and Micromechanical Properties of Cement-Sandy Soil Mixtures Reinforced with Cotton/linen-blended Fiber

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