Browsing by Keyword "Bar"
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Item Mechanical expectations of a high performance concrete based on a polymer binder and reinforced with non-metallic rebars(2008-10) San-José, José T.; Vegas, Iñigo J.; Moisés Frías, Frías; GENERALA high performance concrete, known as polymer concrete, made up of natural aggregates and an orthophthalic polyester binder, reinforced with non-metallic bars (glass reinforced polymer) has been studied. The material is described at micro and macro level, presenting the key physical and mechanical properties using different experimental techniques. Furthermore, a full description of non-metallic bars is presented to evaluate its structural expectancies, embedded in the polymer concrete matrix. Given the closed porosity obtained in polymer concrete, its microstructure continuity and organic nature of the binder, this material is highly protected against atmospheric conditions, corrosion and chemical attacks. The present research work concludes how the structural compatibility, between polymer concrete and non-metallic bars, is obtained in the monotonic bonding tests by providing higher adherence values than traditional reinforced concrete.Item Novelty FRP and TRM strengthening systems applied to stone masonry walls: Experimental programme presentation (I)(International Institute for FRP in Construction (IIFC), 2007) San-José, J. T.; García, D.; El Hadid, T.; San-Mateos, R.; Al Far, A.; Marcos, I.; Smith, Scott T.; TRAZABILIDAD CIRCULAR; E&I SEGURAS Y RESILIENTESThe use of Fibber Reinforced Polymer (FRP) and Textile Reinforced Mortars (TRM) solutions is becoming a usual solution in the strengthening concrete and masonry structures. Furthermore, these FRP systems seem to be a promising solution for cultural heritage, as in some occasions they could be a reversible system, requiring minimum interventions in the monument. Even though the general methodology is quite developed, there are no design and calculation full-recognized guidelines that allow a safety application of this technology. The purpose of this paper is to present an overall picture of the actual situation of the FRP and TRM strengthening systems, applied to ancient stone masonry walls. This paper will present the actual status of an international experimental programme dedicated to the study of mortars and stone components of the full scale wall elements (E:1/3) to be tested in future months, under static loading process. The combination of FRP and TRM strengthening solution with heritage structures (usually decayed substrates and different materials than concrete, such us masonry, adobe bricks, timber, etc.) it seems to be promising from in course research actions all around Europe. For example, in ancient structures, the anchorage problems are much more pronounced, because of the decayed situation of substrates.