Polymer-cementitious composites containing recycled rubber particles

Martuscelli, Carolina Coelho; Santos, Júlio César dos; Oliveira, Pablo Resende; Panzera, Túlio Hallak; Aguilar, Maria Teresa Paulino; Thomas, Carlos

doi:10.1016/j.conbuildmat.2018.03.017

Cited by 22 publications

(13 citation statements)

References 22 publications

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“…In general, the inclusion of cement microparticles provided better results on the mechanical properties of modified matrices when compared to silica results. Similar findings have been reported by Torres et al [27] and Martuscelli et al [28], which evaluated the modified epoxy polymer matrix with silica and cement microparticles under compression. This mechanical enhancement has been attributed to the presence of hydrated cement products, which stiffen the polymer [28].…”

Section: Matrix Phase Characterisationsupporting

confidence: 90%

Cold-Pressed Hybrid Composites Reinforced With Coir Fibres and Cement Particles: A Statistical Approach

Coura¹,

Oliveira²,

Ferreira³

et al. 2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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The mechanical properties of polyester hybrid composites reinforced with treated and untreated coir fibres and 15 wt.% of cement microparticles at different locations were investigated in this work. A Full Factorial Design (2 1 3 1 ) was conducted to identify the effect of the chemical treatment of coir fibres and location of cement inclusions on the tensile (and flexural) strength and modulus. In general, the alkaline treatment led to increased tensile properties and flexural strength compared to untreated fibre composites. The inclusion of cement particles, especially added throughout the whole sample, increased the tensile and flexural strength and tensile modulus of untreated coir fibre composites. A significant increase in flexural modulus was observed only in composites made with treated coir fibres along with the incorporation of cement particles in the whole sample.

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Section: Matrix Phase Characterisationsupporting

confidence: 90%

Cold-Pressed Hybrid Composites Reinforced With Coir Fibres and Cement Particles: A Statistical Approach

Coura¹,

Oliveira²,

Ferreira³

et al. 2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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“…Several authors have incorporated different types of industrial waste as SCM's to concrete to modify its properties [2][3][4]. The pozzolanic properties of the slag generated in steel processes depend on the cooling process.…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of EAFS coarse and fine aggregates increases the density by 15% with respect to the reference mixes, obtaining high density concretes (>2800 kg/m 3 ). The open porosity of all mixes is very similar (5-6%) except for the mix that uses fly ash, due to a gasifying reaction with the superplasticizer additive.…”

mentioning

confidence: 99%

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

et al. 2020

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The development of self-compacting concretes with electric arc furnace slags is a novelty in the field of materials and the production of high-performance concretes with these characteristics is a further achievement. To obtain these high-strength, low-permeability concretes, steel slag aggregates and cupola slag powder are used. To prove the effectiveness of these concretes, they are compared with control concretes that use diabase aggregates, fly ash, and limestone supplementary cementitious materials (SCMs, also called fillers) and intermediate mix proportions. The high density SCMs give the fresh concrete self-compacting thixotropy using high-density aggregates with no segregation. Moreover, the temporal evolution of the mechanical properties of mortars and concretes shows pozzolanic reactions for the cupola slag. The fulfillment of the demands in terms of stability, flowability, and mechanical properties required for this type of concrete, and the savings of natural resources derived from the valorization of waste, make these sustainable concretes a viable option for countless applications in civil engineering.

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“…Silica macro-sized particles used in polymer mortars significantly increase durability and mechanical properties 11 . However, particle inclusions can cause decreased durability if the temperature increases with wear [12][13][14][15][16] . The fracture energy is increased when the front of the crack becomes pinned by a rigid particle within the matrix phase in the interlaminar region [7][8] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites

et al. 2019

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Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of micro-sized silica on the top, bottom and both surfaces of glass fibre laminates, mitigating the interference of the interlocking effect. Three-point bending, and impact tests are performed to evaluate the hybrid glass fibre composites containing 5, 7.5 and 10 wt% of micro silica. In addition, the effect of the micro silica particles into epoxy polymers is verified under tensile, compressive and abrasion tests. A finite element model is developed to simulate the three-point bending test and to better assess the behaviour of the composite laminate. Although silica particles lead to increased compressive modulus of the epoxy polymers, their positive effect on glass fibre composites under flexural loads is more evident when placed on the bottom side of the laminates subjected to the maximum tensile stress. The incorporation of 7.5 wt% silica microparticles at the bottom surface of the laminates achieves higher flexural strength and lower impact resistance.

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Polymer-cementitious composites containing recycled rubber particles

Cited by 22 publications

References 22 publications

Cold-Pressed Hybrid Composites Reinforced With Coir Fibres and Cement Particles: A Statistical Approach

Cold-Pressed Hybrid Composites Reinforced With Coir Fibres and Cement Particles: A Statistical Approach

High Performance Self-Compacting Concrete with Electric Arc Furnace Slag Aggregate and Cupola Slag Powder

Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites

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