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Miguel-Ángel Climent   Professor  Senior Scientist or Principal Investigator 
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Miguel-Ángel Climent published an article in July 2018.
Top co-authors See all
Pedro Garces

53 shared publications

University of Alicante

Isidro Sánchez

23 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

Carlos Anton

8 shared publications

Universitat d’Alacant

47
Publications
17
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0
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123
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Publication Record
Distribution of Articles published per year 
(1989 - 2018)
Total number of journals
published in
 
24
 
Publications See all
Article 0 Reads 0 Citations Application of combined electrochemical treatments to reinforced concrete: Electrochemical chloride extraction plus cath... Miguel Ángel Climent, Jesús Carmona, Pedro Garcés Published: 01 July 2018
Hormigón y Acero, doi: 10.1016/j.hya.2018.05.003
DOI See at publisher website
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
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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 1 Read 16 Citations Non-Destructive Study of the Microstructural Effects of Sodium and Magnesium Sulphate Attack on Mortars Containing Silic... Mark Williams, José Marcos Ortega, Isidro Sánchez, Marta Cab... Published: 23 June 2017
Applied Sciences, doi: 10.3390/app7070648
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The microstructural effects of exposure to a 15% magnesium sulphate, 15% sodium sulphate, and mixed solutions were observed in mortars with and without silica fume, using the non-destructive impedance spectroscopy technique. The non-destructive “Wenner” resistivity test and the classical mercury intrusion porosimetry were used as contrast techniques. The compressive strength of the mortars was also studied. In view of the results obtained, impedance spectroscopy was the most sensitive technique for detecting changes in the porous network of the studied mortars. The addition of silica fume results in a more refined microstructure and a higher compressive strength in mortars exposed to aggressive sulphate solutions.
Article 1 Read 12 Citations Long-Term Behaviour of Fly Ash and Slag Cement Grouts for Micropiles Exposed to a Sulphate Aggressive Medium José Marcos Ortega, María Dolores Esteban, Raúl Rubén Rodríg... Published: 30 May 2017
Materials, doi: 10.3390/ma10060598
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Nowadays, one of the most popular ways to get a more sustainable cement industry is using additions as cement replacement. However, there are many civil engineering applications in which the use of sustainable cements is not extended yet, such as special foundations, and particularly micropiles, even though the standards do not restrict the cement type to use. These elements are frequently exposed to the sulphates present in soils. The purpose of this research is to study the effects in the very long-term (until 600 days) of sulphate attack in the microstructure of micropiles grouts, prepared with ordinary Portland cement, fly ash and slag commercial cements, continuing a previous work, in which these effects were studied in the short-term. The microstructure changes have been analysed with the non-destructive impedance spectroscopy technique, mercury intrusion porosimetry and the “Wenner” resistivity test. The mass variation and the compressive strength have also been studied. The impedance spectroscopy has been the most sensitive technique for following the sulphate attack process. Considering the results obtained, micropiles grouts with slag and fly ash, exposed to an aggressive medium with high content of sulphates, have shown good behaviour in the very long-term (600 days) compared to grouts made with OPC.
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