Cellulose modified fibres in cement based composites

Tonoli, Gustavo Henrique Denzin; Rodrigues-Filho, Ubirajara P.; Savastano, Holmer; Bras, Julien; Belgacem, Mohamed Naceur; Lahr, Francisco Antônio Rocco

doi:10.1016/j.compositesa.2009.09.016

Cited by 188 publications

(112 citation statements)

References 22 publications

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“…Last year we had the opportunity to test the effect of the fibres modification in cement based composites [24] . Bleached Eucalyptus fibres were grafted by γ-methacryloxypropyltri-methoxysilane (MRPS) and γ-aminopropyltri-ethoxysilane (APS).…”

Section: Hdsmentioning

confidence: 99%

Cellulose-reinforced composites: From micro-to nanoscale

Dufresne¹,

Belgacem²

2010

Polímeros

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This paper present the most relevant advances in the fields of: i) cellulose fibres surface modification; ii) cellulose fibres-based composite materials; and iii) nanocomposites based on cellulose whiskers or starch plateletlike nanoparticles. The real breakthroughs achieved in the first topic concern the use of solvent-free grafting process (plasma) and the grafting of the matrix at the surface of cellulose fibres through isocyanate-mediated grafting or thanks to "click chemistry". Concerning the second topic, it is worth to mention that for some cellulose/matrix combination and in the presence of adequate aids or specific surface treatment, high performance composite materials could be obtained. Finally, nanocomposites allow using the semi-crystalline nature and hierarchical structure of lignocellulosic fibres and starch granules to more deeply achieve this goal profitably exploited by Mother Nature

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Section: Hdsmentioning

confidence: 99%

Cellulose-reinforced composites: From micro-to nanoscale

Dufresne¹,

Belgacem²

2010

Polímeros

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“…There is extensive research on how to improve thedurability of natural fiber in cementitious matrix [8][9][10][11][12][13]. However, all research focused onmacroscopic mechanical properties, such as tensile strength and flexural strength of the composite withparticular fibre volume fraction and geometry.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Natural Fibre Reinforced Cementitious Composite for Structural Retrofitting of Building Structures

Wan

Parris²

2016

IABSE Conference, Guangzhou 2016: Bridges and Structures Sustainability - Seeking Intelligent Solutions

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SummaryMany masonry building structures are vulnerable to a seismic event. There are many structural retrofitting technologies available, such as glass/carbon fibre reinforced polymeric matrix composite. However, it is difficult to protect the polymeric matrix from fire in building structures. To fundamentally improve the fire resistance of retrofitting material, it can simply change the polymeric matrix to cement based matrix. This kind of composite is called fibre reinforced cementitious matrix (FRCM). It consists of high performance manmade fibre such as AR glass, carbon, basalt or Kevlar and it is extensively investigated by different researchers. It provides an excellent alternative for engineers to structural retrofit building structures for which fire is one of major design concerns. Ironically, most of the earthquake active zones are in the poorest region in the world because of constinuous attack by natural disasters. In those regions, the building structures are the most vulnerable to an extreme event such as earthquake and there is a need for structural retrofitting. Due to poor economic development of those regions, it is unaffordable to apply high performance manmade fibre to achieve the purpose. One practical solution is to develop a technically feasible, economically viable and environmentally sustainable is to replace high performance manmade fibre by locally available natural fibre in FRCM. A technical challenge is the durability of natural fibre in the high alkalinity environment of cementitious matrix. In this presentation, the effects of different treatment methods on sisal fibre as well as how to extract the mechanical and bond parameters of treated fibre from pull-out test under accelerated ageing test will be discussed.

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“…Appearance of silicon ions in RCF spectrogram shall be noted, the peak value of which is considerably lower than that of cement. Based on the analysis of RCF and hardened cement paste spectrograms one can suggest that partial mixing of hydration products of cement clinker minerals occurred around the fiber surface layer [12,13]. It shall be noted that higher content of calcium ions (Table 1) might be related to formation of crystallization centers in the contact zone between RCF and cement matrix, which is followed by setting of Ca(ОН) 2 crystals [14,15].…”

Section: Resultsmentioning

confidence: 99%

Influence of cellulose fibers on structure and properties of fiber reinforced foam concrete

Федоров

Mestnikov

2018

MATEC Web Conf.

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Abstract. One of the promising means of foamed concrete quality improvement is micro-reinforcement by adding synthetic and mineral fibers to the base mix. This research is the first to investigate peculiarities of using recycled cellulose fiber extracted from waste paper for obtaining fiber reinforced foam concrete. The paper presents results of experimental research on the influence of cellulose fibers on structure and properties of fiber reinforced foam concrete by using methods of chemical analysis and scanning electron microscopy. The research determines peculiarities of new formations appearance and densification of binder hydration products in the contact zone between fiber and cement matrix, which boost mechanical strength of fiber reinforced foam concrete. Physico-mechanical properties of fiber reinforced foam concrete were defined depending on the amount of recycled cellulose fiber added to the base mix. It was found that the use of recycled cellulose fibers allows obtaining structural thermal insulating fiber reinforced foam concretes of non-autoclaved hardening of brand D600 with regard to mean density with the following improved properties: compressive strength increased by 35% compared to basic samples, higher stability of foamed concrete mix and decreased shrinkage deformation.

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Cellulose modified fibres in cement based composites

Cited by 188 publications

References 22 publications

Cellulose-reinforced composites: From micro-to nanoscale

Cellulose-reinforced composites: From micro-to nanoscale

Investigation of Natural Fibre Reinforced Cementitious Composite for Structural Retrofitting of Building Structures

Influence of cellulose fibers on structure and properties of fiber reinforced foam concrete

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