Results 41 to 50 of about 1,878 (204)

PCE and BNS admixture adsorption in sands with different composition and particle size distribution

Materiales de Construccion, 2017
The choice of a superplasticiser (SP) for concrete is of great complexity, as it is well known that properties of the end product are related to admixture and its compatibility with concrete components.
M. M. Alonso, R. Martínez-Gaitero, S. Gismera-Diez, F. Puertas   +3 more
doaj   +1 more source

Modeling of Corrosion Rate and Resistivity of Steel Reinforcement of Calcium Aluminate Cement Mortar

Advances in Civil Engineering, Volume 2018, Issue 1, 2018., 2018
Calcium aluminate cement (CAC) is a binder whose hydrated compounds change over time from cubic phases to hexagonal phases, producing an increase of porosity in reinforced concretes. Thereby, chloride ions, among other steel corrosion promoters, can enter the concrete more easily leading to an increase of the reinforcement corrosion process.
Cristina Argiz, Miguel Ángel Sanjuán, Pedro Castro Borges, Emiliano Álvarez, Constantin Chalioris   +4 more
wiley   +1 more source

New advanced electrochemical techniques for on site measurements of reinforcement corrosion

Materiales de Construccion, 2001
Measurement techniques of reinforcement corrosion are scarcely researched if compared with the increasing number of publications in the subject. However, numerous possibilities and challenges remain without being explored.
C. Andrade, I. Martínez, C. Alonso, J. Fullea   +3 more
doaj   +1 more source

Sensor Placement Strategies for the Seismic Monitoring of Complex Vaulted Structures of the Modern Architectural Heritage

Shock and Vibration, Volume 2018, Issue 1, 2018., 2018
Effective diagnostic and monitoring systems are highly needed in the building and infrastructure sector, to provide a comprehensive assessment of the structural health state and improve the maintenance and restoration planning. Vibration‐based techniques, and especially ambient vibration testing, have proved to be particularly suitable for both ...
Erica Lenticchia, Rosario Ceravolo, Paola Antonaci, Emanuele Reccia   +3 more
wiley   +1 more source

Análisis y propuesta de mejoras para la eficiencia energética del edificio principal del Instituto c.c. Eduardo Torroja-CSIC

Informes de la Construccion, 2014
En el marco del 80 aniversario del IETcc-CSIC se elabora una propuesta para la rehabilitación del edificio construido en 1953. Partiendo del análisis del comportamiento energético del edificio principal, se concluye que este no es eficiente ...
F. Martín-Consuegra, I. Oteiza, C. Alonso, T. Cuerdo-Vilches, B. Frutos   +4 more
doaj   +1 more source

Analysis of the Optical Response of Opaque Urban Envelope Materials: The Case of Madrid

Infrastructures, 2022
The optical response of opaque materials in an urban envelope plays an important role in a city’s energy exchange with the environment as it defines the absorption of radiation and emission of heat.
Gloria Pérez, Fernando Martín-Consuegra, Fernando de Frutos, Arturo Martínez, Ignacio Oteiza, Borja Frutos, Carmen Alonso   +6 more
doaj   +1 more source

Coal Bottom Ash for Portland Cement Production

Advances in Materials Science and Engineering, Volume 2017, Issue 1, 2017., 2017
Because of industrialization growth, the amount of coal power plant wastes has increased very rapidly. Particularly, the disposal of coal bottom ash (CBA) is becoming an increasing concern for many countries because of the increasing volume generated, the costs of operating landfill sites, and its potential hazardous effects.
Cristina Argiz, Miguel Ángel Sanjuán, Esperanza Menéndez, Giorgio Pia   +3 more
wiley   +1 more source

Spectroscopic Studies of the Behavior of Eu3+ on the Luminescence of Cadmium Tellurite Glasses

Journal of Spectroscopy, Volume 2015, Issue 1, 2015., 2015
The effect of europium doping on the photoluminescence of ZnO‐CdO‐TeO2 glasses is analyzed. TeO2‐based glasses are of high interest as hosts for laser glasses. The Eu‐doped oxide glasses were prepared by the conventional melt‐quenching method. Five different concentrations of europium nitrate hexahydrate that varied from 0.3 to 1.5 mol% were used.
I. V. García-Amaya, Ma. E. Zayas, J. Alvarado-Rivera, E. Álvarez, S. A. Gallardo-Heredia, G. A. Limón, R. Lozada-Morales, J. Ma. Rincón, Carlos Andres Palacio   +8 more
wiley   +1 more source

Reparación de revocos de morteros. Nuevos documentos normativos de AENOR

Informes de la Construccion, 2012
Los procedimientos de actuación en las fachadas de edificios muchas veces pasan por la conservación y restauración de revocos de mortero, que actualmente han sido objeto de nuevos documentos normativos de AENOR, que es la entidad responsable del ...
M. Corroto, E. Sabador, C. Medina, M. Frías, M. I. Sánchez-de Rojas   +4 more
doaj   +1 more source

Mullite production by valorization of a hydrodesulphurization catalyst waste

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Due to its high alumina and silica content, Ni–Mo catalyst waste is a suitable, amorphous raw material for producing aluminosilicate phases. Thermal treatment of the waste at 1200°C for 30 min yields a material containing 50 wt.% mullite and exhibiting 96% overall crystallinity. The addition of amorphous silica significantly enhances mullite formation:
Rafael Carrizosa, Agenor De Noni Jr., Aurora López‐Delgado, Isabel Padilla, Maximina Romero   +4 more
wiley   +1 more source