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Isidro Sánchez     Institute, Department or Faculty Head 
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Isidro Sánchez published an article in September 2017.
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Top co-authors See all
Miguel-Ángel Climent

47 shared publications

University of Alicante

José Marcos Ortega

16 shared publications

Department of Civil Engineering, University of Alicante, 03690 Alicante, Spain

Marta Cabeza

16 shared publications

University of Vigo; EEI; Campus Universitario Lagoas Marcosende; 36310 Vigo Pontevedra Spain

M.P. López

6 shared publications

University of Alicante

María Dolores Esteban

5 shared publications

Departamento de Ingeniería Civil, Urbanismo y Aeroespacial, Escuela de Arquitectura, Ingeniería y Diseño, Universidad Europea, c/Tajo s/n, Villaviciosa de Odón, 28670 Madrid, Spain

Publication Record
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Article 1 Read 4 Citations Impedance Spectroscopy Study of the Effect of Environmental Conditions on the Microstructure Development of Sustainable ... José Marcos Ortega, Isidro Sánchez, Miguel Ángel Climent Published: 25 September 2017
Materials, doi: 10.3390/ma10101130
DOI See at publisher website ABS Show/hide abstract
Today, the characterisation of the microstructure of cement-based materials using non-destructive techniques has become an important topic of study, and among them, the impedance spectroscopy has recently experienced great progress. In this research, mortars with two different contents of fly ash were exposed to four different constant temperature and relative humidity environments during a 180-day period. The evolution of their microstructure was studied using impedance spectroscopy, whose results were contrasted with mercury intrusion porosimetry. The hardening environment has an influence on the microstructure of fly ash cement mortars. On one hand, the impedance resistances R1 and R2 are more influenced by the drying of the materials than by microstructure development, so they are not suitable for following the evolution of the porous network under non-optimum conditions. On the other hand, the impedance spectroscopy capacitances C1 and C2 allow studying the microstructure development of fly ash cement mortars exposed to those conditions, and their results are in accordance with mercury intrusion porosimetry ones. Finally, it has been observed that the combined analysis of the abovementioned capacitances could be very useful for studying shrinkage processes in cement-based materials kept in low relative humidity environments.
Article 1 Read 5 Citations Short-Term Behavior of Slag Concretes Exposed to a Real In Situ Mediterranean Climate Environment José Marcos Ortega, Isidro Sánchez, Marta Cabeza, Miguel Áng... Published: 08 August 2017
Materials, doi: 10.3390/ma10080915
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
At present, one of the most suitable ways to get a more sustainable cement industry is to reduce the CO2 emissions generated during cement production. In order to reach that goal, the use of ground granulated blast-furnace slag as clinker replacement is becoming increasingly popular. Although the effects of this addition in the properties of cementitious materials are influenced by their hardening conditions, there are not too many experimental studies in which slag concretes have been exposed to real in situ environments. Then, the main objective of this research is to study the short-term effects of exposure to real Mediterranean climate environment of an urban site, where the action of airborne chlorides from sea water and the presence of CO2 are combined, in the microstructure and service properties of a commercial slag cement concrete, compared to ordinary Portland cement (OPC). The microstructure was studied with mercury intrusion porosimetry. The effective porosity, capillary suction coefficient, chloride migration coefficient, carbonation front depth, and compressive strength were also analyzed. Considering the results obtained, slag concretes exposed to a real in situ Mediterranean climate environment show good service properties in the short-term (180 days), in comparison with OPC.
Article 3 Reads 8 Citations Influence of Silica Fume Addition in the Long-Term Performance of Sustainable Cement Grouts for Micropiles Exposed to a ... José Marcos Ortega, María Dolores Esteban, Raúl Rubén Rodríg... Published: 02 August 2017
Materials, doi: 10.3390/ma10080890
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At present, sustainability is of major importance in the cement industry, and the use of additions such as silica fume as clinker replacement contributes towards that goal. Special foundations, and particularly micropiles, are one of the most suitable areas for the use of sustainable cements. The aim of this research is to analyse the effects in the very long-term (for 600 days) produced by sulphate attack in the microstructure of grouts for micropiles in which OPC (ordinary Portland cement) has been replaced by 5% and 10% silica fume. This line of study is building on a previous work, where these effects were studied in slag and fly ash grouts. Grouts made using a commercial sulphate-resisting Portland cement were also studied. The non-destructive impedance spectroscopy technique, mercury intrusion porosimetry, and Wenner resistivity testing were used. Mass variation and the compressive strength have also been analysed. Apparently, impedance spectroscopy is the most suitable technique for studying sulphate attack development. According to the results obtained, grouts for micropiles with a content of silica fume up to 10% and exposed to an aggressive sulphate medium, have a similar or even better behaviour in the very long-term, compared to grouts prepared using sulphate-resisting Portland cement.
Article 0 Reads 1 Citation The erosion of the beaches on the coast of Alicante: Study of the mechanisms of weathering by accelerated laboratory tes... I. López, L. Aragonés, Javier Garcia-Barba, M.P. López, Isid... Published: 01 October 2016
Science of The Total Environment, doi: 10.1016/j.scitotenv.2016.05.026
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Article 3 Reads 13 Citations Microstructure and durability of fly ash cement grouts for micropiles José L. Pastor, J. Marcos Ortega, María Flor, M. Pilar López... Published: 01 August 2016
Construction and Building Materials, doi: 10.1016/j.conbuildmat.2016.04.154
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Article 0 Reads 6 Citations The incorporation of construction and demolition wastes as recycled mixed aggregates in non-structural concrete precast ... C. Rodríguez, C. Parra, G. Casado, I. Miñano, F. Albaladejo,... Published: 01 July 2016
Journal of Cleaner Production, doi: 10.1016/j.jclepro.2016.03.137
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