Results 61 to 70 of about 1,509,012 (214)

The Pier Luigi Nervi's concrete structure of Palazzetto dello Sport: Modeling and dynamic characterization

Structural Concrete, Volume 27, Issue 3, Page 2869-2881, June 2026.
Abstract This paper presents a numerical and experimental study aimed at the modeling and dynamic characterization of the reinforced concrete structure of the Palazzetto dello Sport in Rome, designed and by Pier Luigi Nervi with Annibale Vitellozzi, and built by Nervi & Bartoli contractors in 1956‐57.
Jacopo Ciambella, Gianluca Ranzi, Francesco Romeo   +2 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

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

Viability of the use of construction and demolition waste aggregates in alkali-activated mortars

Materiales de Construccion, 2018
This study explores the technological feasibility of using construction and demolition waste (C&DW) as recycled aggregate in alkali activated mortars, ascertaining the mechanical and microstructural behavior.
M. M. Alonso, A. Rodríguez, F. Puertas
doaj   +1 more source

Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method

Materiales de Construccion, 2021
The determination of thermal conductivity of cement-based materials is relevant from the perspective of buildings’ energy efficiency. The absence of unified tests for its measurement in mortars and concrete results in a heterogeneity of the data ...
D. Revuelta, J.L. García-Calvo, P. Carballosa, F. Pedrosa   +3 more
doaj   +1 more source

Transforming landfilled coal ash in ultralow clinker binders

Journal of the American Ceramic Society, Volume 108, Issue 9, September 2025.
Abstract The gradual shortage of fly ash caused by the closure of coal‐fired power plants in some areas has stimulated increased research into novel pozzolanic supplementary cementitious materials (SCMs), with a particular focus on landfilled coal ash (LA). A novel hybrid alkaline cement (HAC) was developed using 70% LA and 30% ordinary Portland cement
Luchang Xiong, Olga Maltseva, Ana Fernandez‐Jimenez, Zhijun Wan, Angel Palomo   +4 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

Facilitation of Lake Eutrophication by Altered Feedback Loops Between Submerged Macrophyte Vegetation and Phosphorus Retention

Freshwater Biology, Volume 70, Issue 5, May 2025.
ABSTRACT Charophytes (stoneworts) often dominate the submerged vegetation in nutrient‐poor hardwater lakes, where they support high benthic phosphorus (P) retention. As a consequence, epilimnion P concentrations remain low and water clarity high, resulting in a positive feedback.
Sabine Hilt, Klaus van de Weyer, Sebastian Meis, Jens Päzolt, Mark O. Gessner, Thomas Gonsiorczyk, Marta Maria Alirangues‐Nuñez, Michael Hupfer   +7 more
wiley   +1 more source

Carbonation of calcium aluminate cement pastes

Materiales de Construccion, 2001
This work discusses the results from accelerated tests intended to investigate the ways the different curing methods affect the carbonation of calcium aluminate cements pastes (CAC).
L. Fernández-Carrasco, F. Puertas, M. T. Blanco-Varela, T. Vázquez   +3 more
doaj   +1 more source

Epiphyton phenology determines the persistence of submerged macrophytes: Exemplified in temperate shallow lakes

Limnology and Oceanography, Volume 70, Issue 3, Page 764-774, March 2025.
Abstract Submerged macrophytes are key components in many freshwater and marine ecosystems, contributing to ecosystem functions and services. In temperate shallow lakes, spring epiphyton shading can be decisive for submerged macrophyte development, potentially leading to macrophyte collapse and a shift to undesired, turbid conditions. Global change can
Alena S. Gsell, Sven Teurlincx, Marta M. Alirangues Nuñez, Sabine Hilt   +3 more
wiley   +1 more source