Examinando por Autor "Saiz Martinez, Pablo"

Mostrando 1 - 3 de 3

Dissolved recycled expanded polystyrene as partial replacement in plaster composites
(Elsevier, 2023-04-15) Saiz Martinez, Pablo; Zaragoza Benzal, Alicia; Ferrández Vega , Daniel; Atanes Sánchez , Evangelina
The recovery of Construction and Demolition Waste (CDW) for its reincorporation into the manufacturing process of new materials is fundamental in the fight against environmental pollution, reducing the current high consumption of raw materials and boosting energy savings. The aim of this research is the study and development of a new plaster-based material in which the conglomerating material is partially replaced by dissolved recycled expanded polystyrene. In the experimental campaign, different dosages have been used in which the plaster material has been progressively replaced by the dissolved recycled expanded polystyrene, in order to subsequently carry out a physicochemical, physical and mechanical characterisation of the composites. The results obtained show how the incorporation of expanded polystyrene in solution as a partial replacement of the binder generates a homogeneous plaster composite, favouring the total integration of the waste in the matrix of the construction material finally produced. It has been observed that this new material has, in comparison with traditional plasters, a very low density, high thermal resistance and excellent plate bending behaviour. These properties position the developed material as a viable alternative in the production of more sustainable prefabricated plates and panels through the application of circular economy criteria.
New system for vibrating and orientation of steel fibers in masonry mortars
(Elsevier, 2021-11-01) Saiz Martinez, Pablo; Ferrández Vega, Daniel; Morón , Alberto; Alvarez, Manuel; Morón , Carlos
The incorporation of reinforcing fibers during the kneading process has become an efficient method to improve the flexural strength of building binder materials. In this work, a new system for the vibration and orientation of metallic fibers has been developed. This allows the fibers to be positioned perpendicular to the direction of the flexural stress. This vibrating system for construction mortars in a fresh state improves the performance of mortars made with recycled aggregate, increasing their mechanical resistance and their application within the building sector. Testswere carried out with mortars made with two types of recycled aggregates and two different percentages of reinforcing fibers. The results show thatby applying the vibrating system implemented, it is possible to increase the mechanical resistance of mortars made with recycled aggregate by more than 15%.
Study of the properties of lime and cement mortars made from recycled ceramic aggregate and reinforced with fibers
(Elsevier, 2021-03-01) Saiz Martinez, Pablo; Ferrández Vega, Daniel; Morón, Alberto; Morón , Carlos; Atanes Sánchez, Evangelina
The construction and demolition waste can be used as an alternative with a lower environmental impact compared to the use of natural aggregates in the concrete and mortar manufacture. In this work, it has been performed an analysis of lime and cement mortar properties made with ceramic recycled aggregates reinforced with three types of fibers: glass, basalt and carbon. An experimental campaign has been carried out which includes the chemical and physical characterization of the materials and the statistical analysis of the results obtained. It has been proven that the addition of fibers improves the mechanical properties of the material and decreases its retraction, which favors the incorporation of recycled aggregates in the mortars manufacture. Based on the results obtained, it can be stated that carbon fiber is the best performing reinforcing material, as it has been demonstrated in this statistical analysis.