Results 41 to 50 of about 6,788 (213)
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 +4 more
wiley +1 more source
New advances in the carbonation of aluminous cement. Alkaline hydrolisis
Materiales de Construccion, 1999 The carbonation process of aluminous cement in presence of high alkali content is studied. In this work, the formation of a compound which formula is close to K4Al6(CO3)11-x(OH)2x(H2O)y is shown for the studies samples. The aluminous cement carbonation
L. Fernández-Carrasco +3 more
doaj +1 more source
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 +7 more
wiley +1 more source
Calcium aluminate cement hydration in a high alkalinity environment
Materiales de Construccion, 2009 The present paper forms part of a broader research project that aims primarily to devise new cementitious products via the alkali activation of silico-aluminous materials.
C. Pastor +3 more
doaj +1 more source
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 +3 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 +4 more
doaj +1 more source
Assessment and Evaluation of the Repair Options for the Torroja Institute Winter Garden [PDF]
, 2010 In this paper, the design and causes of deterioration of the Winter Garden located in the Eduardo Torroja Institute (IETcc) in Madrid, as well as the structural rehabilitation works are discussed.
Mateo, Julio +2 more
core
Informes de la Construcción, 1961 Con motivo de la conferencia sobre "Puentes modernos", del cursillo para Inspectores y Jefes de la Dirección General de Carreteras, en el Instituto Técnico de la Construcción, el conferenciante, profesor Fernández Casado, comenzó su disertación con la siguiente exposición de la obra de Eduardo Torroja en el ramo de puentes.
openaire +4 more sources
Structural Control and Health Monitoring, Volume 2025, Issue 1, 2025.Concrete resistivity (ρ) is commonly monitored in situ using sensors based on the rebar‐disc (RDM) or four‐electrode (FEM) methods. This study validates, for the first time in reinforced concrete, an innovative corrosion sensor approach (CSA) previously tested only in simulated pore solutions.
J. E. Ramón +5 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