Polymeric and cementitious mortars for the reconstruction of natural stone structures exposed to marine environments

Thomas, Carlos; Lombillo, I.; Polanco, J.A.; Villegas, L.; Setién, J.; Biezma, M. V.

doi:10.1016/j.compositesb.2010.08.007

Cited by 22 publications

(6 citation statements)

References 14 publications

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“…The most important effect of these impurities is the reduction in the strength. Some of the contaminants little studied that can be found in RA from CDW are the consolidants and repellents used in the maintenance of structures [46] and polymeric materials used in the reconstruction or rehabilitation of structures [47]. However, in the case of recycled aggregates from the precast in the plant, the number of impurities is not very high.…”

Section: Recycled Aggregate Contaminants and Impuritiesmentioning

confidence: 99%

Structural recycled aggregate concrete made with precast wastes

Thomas

Setién

Polanco

2016

Construction and Building Materials

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102

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This paper presents the main results of the characterization of recycled aggregate concrete made with precast structural concrete wastes as a case study. The use of recycled aggregates presents two main benefits. On the one hand, there would be an economic and environmental saving because it would not need to deposit waste in landfills. On the other hand, there would be a further economic and environmental saving because it would reduce the need for natural aggregate. However, because of the need of a greater amount of cement not all degrees of substitution present advantages. The results were obtained from four degrees of substitution and different mixing proportions and methods using natural and recycled aggregates and superplasticizers. After obtaining the optimal mixing proportions, the concretes have been fully characterised performing mechanical and durability tests, the methods analysed and the results compared with the literature.

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Section: Recycled Aggregate Contaminants and Impuritiesmentioning

confidence: 99%

Structural recycled aggregate concrete made with precast wastes

Thomas

Setién

Polanco

2016

Construction and Building Materials

Self Cite

102

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“…The efficiency of such mechanisms depends on particle characteristics, such as: size distribution, geometry, volume fraction, stiffness, strength and microstructure (porosity level and chemical reactivity). 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] .…”

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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“…According to the procedure established in the standard UNE-EN 13892-4 (2004), in order to measure the width of the abrasion traces between the longitudinal outer limits, a line can be drawn in the centre of the trace, perpendicular to its centreline and the distance measured. However, abraded volume can be calculated by determination of the volume of a non-stick plastic material after applied in the gap resulting from the erosion of the surface of the specimen (Thomas, Lombillo, Polanco, Villegas, Setién, & Biezma, 2010). Also, the volume can be calculated from the depth penetration in concrete, measured with the transducers.…”

Section: Resultsmentioning

confidence: 99%

Abrasive wear evolution in concrete pavements

García

Castro‐Fresno

Polanco

et al. 2012

Road Materials and Pavement Design

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Abrasion of a concrete pavement is habitually due to the continued movement of wheels on the concrete surface. Starting from the theoretical model developed by Horszczaruk, this paper proposes the development of a new model, which expresses the material volume loss as a function of the work done by the wheel and the total abrasion time, as well as the composition of the concrete. For the verification of the model, samples of an experimental pavement were used, in which a dry shaking treatment with corundum had been applied. Finally, with this model an engineer could predict the concrete pavement lifetime from the parameters of the concrete and its traffic characteristics.

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Polymeric and cementitious mortars for the reconstruction of natural stone structures exposed to marine environments

Cited by 22 publications

References 14 publications

Structural recycled aggregate concrete made with precast wastes

Structural recycled aggregate concrete made with precast wastes

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

Abrasive wear evolution in concrete pavements

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