| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Quintana Marín, Germán Camilo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Mechanical refining combined with chemical treatment for the processing of Bamboo fibres to produce efficient cement compositescitations
- 2021Efecto de la sulfidez en la respuesta a flexión de tableros de cemento reforzados con fibras de guadua angustifolia kunth pre-tratadas alcalinamente
- 2021Enhanced efficiency of a chemically modified hyperbranched Kraft lignin in the removal of pharmaceuticals from water at low microgram per liter levelscitations
- 2021Rheological behavior of magnetic pulp fiber suspensions
- 2019Effect of degree of refining on flexural response of fibre cement boards reinforced with Guadua Angustifolia Kunth Bamboo
- 2017Sugarcane bagasse reinforced compositescitations
- 2016Thermal Study of Gels Obtained From Resol Type Phenolic Resins Modified With Lignincitations
- 2016Tensile strength assessment of injection-molded high yield sugarcane bagasse-reinforced polypropylenecitations
- 2016Starch-based biopolymer reinforced with high yield fibers from sugarcane bagasse as a technical and environmentally friendly alternative to high density polyethylenecitations
- 2016Cellulose nanofibers modified with alkyl ketene dimer for oil absorbent aerogels
- 2015Rheology of pulp suspensions of bleached sugarcane bagassecitations
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article
Efecto de la sulfidez en la respuesta a flexión de tableros de cemento reforzados con fibras de guadua angustifolia kunth pre-tratadas alcalinamente
Abstract
<p>Guadua angustifolia KUNTH is a giant grass native to America with high ecological adaptability. Its composition and structure make it in a lignocellulosic source with good mechanical properties with wide applications. Guadua angustifolia fibers were alkali pretreated by Kraft pulping at low temperatures. An amount of 10% of active alkali was combined with three different sulphide levels-10%-15%, and 30%. A mass portion of 5% of pretreated fibers was used to reinforce the fiber cement board composites produced by the slurry method. The effects of sulfidity concentration in treatment over the physical-mechanical properties of fiber cement board composites were evaluated. Superficial changes on Guadua fiber and water retention value after alkaline treatments were determined. Fiber cement boards were mechanically tested after 7, 28, and 180 days of curing. Results showed flexural strength in boards reinforced with treated fibers is greater than flexural strength in boards reinforced with untreated fibers; moreover, after 180 days of curing, there was no flexural strength reduction, indicating that alkaline treatments avoid fiber degradation into the cement matrix. Finally, results showed that low sulfidity concentration (10%) produces fibers with cleaner surfaces, improving fiber-cement bonding, and these fibers allowed the production of fiber cement boards with higher flexural strength.</p>