Valorization of micro-cellulose fibers in self-compacting concrete

M, Mohamed Ansari; Ghorbel, Elhem; Wardeh, George

doi:10.1016/j.conbuildmat.2010.06.009

Cited by 41 publications

(14 citation statements)

References 19 publications

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“…Table 3 lists a selection of biomass sources used as substitutes for reinforcement or aggregates in cement and concrete materials, together with their sizes and amount. Much more biomass materials were tested such as bamboo [35][36][37][38][39][40], sisal fibres [32,41], jute fibres [42], pineapple leaf fibres [32], sugarcane waste fibres [43], cork granular [44], curauá [45,46], cattail (typha) [47] and cellulose pulp [48][49][50][51][52] etc. They provide alternative solutions to the problem of limited supply of non-renewable mineral resources for construction.…”

Section: Types Sizes and Amount Of Biomass Used In Cementitious Prodmentioning

confidence: 99%

Treatments of plant biomass for cementitious building materials – A review

Vo¹,

Navard²

2016

Construction and Building Materials

119

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International audienceThe use of plant biomass for developing energy efficient and low cost construction materials is an emerging field in building construction and civil engineering. Although the biomass-based cement and concrete composites have several advantages, such as low densities, low amount of CO2 gas emission, good thermal and acoustic insulation, there are also disadvantages or open questions like the durability of biomass in alkaline cement matrix, the high absorption of water and the cement-biomass compatibility, all deteriorating concrete mechanical properties, which are already intrinsically low due to the low mechanical properties of biomass-based fillers. This review gives the necessary basis in plant structure and composition for understanding how and why many treatments tested on biomass for overcoming the above-mentioned difficulties are acting. This paper reviews research papers and patents on the treatments tested to improve the mechanical properties, durability and compatibility of biomass for its use as concrete fillers for building materials

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Section: Types Sizes and Amount Of Biomass Used In Cementitious Prodmentioning

confidence: 99%

Treatments of plant biomass for cementitious building materials – A review

Vo¹,

Navard²

2016

Construction and Building Materials

119

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“…Within a sustainability perspective, the use of natural fibres in the reinforcement of cementicious materials is gathering some expression. Examples of the aforementioned are the research studies regarding the use of recycled micro-cellulose fibres (Mohamed et al, 2010), as well as other plant fibres, such as eucalyptus pulp, coir or eucalyptus (Savastano et al, 1999), sisal (Silva et al, 2010), kenaf (i.e. hibiscus cannabinus) (Elsaid et al, 2011), cotton (Pinto et al, 2013), or even other unforeseeable materials, such as human hair (Jain and Kothari, 2012).…”

Section: Introductionmentioning

confidence: 99%

Influence of discrete fibre reinforcement on the uniaxial compression response and seismic wave velocity of a cement-stabilised sandy-clay

Cristelo

Cunha

Dias

et al. 2015

Geotextiles and Geomembranes

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a b s t r a c tA sandy clay from the northeast region of Portugal has been reinforced with polypropylene fibres and cement, and seismic wave velocity measurements and uniaxial compression strength tests were performed. Results showed that the fibre induce variations on the wave's velocity that cannot be related to real changes in the material stiffness. Therefore, care should be used when using this technique in fibre reinforced soils. The addition of fibres resulted in an increase of compression strength of the mixtures, for every cement content. Regarding the stiffness, the fibres proved to be increasingly effective with an increase in cementation, especially at the early stages of the stressestrain curve, when the secant deformability modulus increases with fibre content. However, no influence of the discrete reinforcement was detected on the peak and post-peak stages of the loading process. Fibre length showed also to be influential on strength and stiffness.

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“…Moreover, for concretes elaborated with recycled aggregates provided from construction and demolition waste, we establish that ( α E ) RA = 0.998 for Γ = 1 whatever the origin of recycled aggregates (Table ). The relation proposed in Wardeh et al estimates the tangent elastic modulus. The three models are represented in Figure a with 508 experimental values taken from this work and the literature including 195 values for RAC …”

Section: Mechanical Properties and Prediction Relationshipsmentioning

confidence: 91%

Mechanical and fracture properties of recycled aggregate concrete in design codes and empirical models

Ghorbel

Wardeh

Fares

2019

Structural Concrete

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In this paper the relationships between the mechanical and fracture properties of recycled aggregate concretes (RAC) are investigated based on the own research programs results and an extensive number of experimental data from the literature. The primary aim is the extension of design standards empirical models to the case of RAC with particular emphasis on the effect of replacement ratio on mechanical properties, uniaxial stress–strain curve, fracture energy, and stress–strain softening curve's parameters. It was pointed out that relationships dedicated to assess the mechanical properties of natural aggregate concretes (NAC) are not fully adequate to predict the behavior of RAC. It was established that the elastic modulus Ecm, the tensile splitting strength fctm,sp are related to the mean compressive strength fcm as well as to a parameter taking into account the effect of the recycled aggregates replacement ratio. The validity of many analytical expressions of the stress–strain relationship has been also studied and the effect of replacement ratio was taken into account. The comparison between experimental and analytical stress–strain curves shows that, with the proposed modifications, some models satisfactorily describe the behavior up to failure while others either overestimate or underestimate the postpeak branch. Due to the limited number of available data, no well‐defined relation was found between fracture energy, compressive strength, and formulation parameters.

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Valorization of micro-cellulose fibers in self-compacting concrete

Cited by 41 publications

References 19 publications

Treatments of plant biomass for cementitious building materials – A review

Treatments of plant biomass for cementitious building materials – A review

Influence of discrete fibre reinforcement on the uniaxial compression response and seismic wave velocity of a cement-stabilised sandy-clay

Mechanical and fracture properties of recycled aggregate concrete in design codes and empirical models

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