Results 51 to 60 of about 1,878 (204)

Carbonation of calcium aluminate cement pastes

open access: yesMateriales 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   +3 more
doaj   +1 more source

Transforming landfilled coal ash in ultralow clinker binders

open access: yesJournal 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   +4 more
wiley   +1 more source

New advances in the carbonation of aluminous cement. Alkaline hydrolisis

open access: yesMateriales 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

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

open access: yesFreshwater 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

open access: yesMateriales 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

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

open access: yesLimnology 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

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

open access: yesMateriales 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

La biblioteca del Instituto de Ciencias de la Construcción Eduardo Torroja vuelve a la actividad [PDF]

open access: yes, 2001
Sección: Noticias. Noticias internasAunque muchos de vosotros ya conoceis la biblioteca del Instituto de Ciencias de la Construcción “Eduardo Torroja” (IETcc) escribo estas líneas para la revista Enredadera, con el único propósito de transmitir a todas ...
Mendoza García, Isabel
core   +1 more source

A Concrete Resistivity Method Based on a Simple Measuring Cell for Onsite Corrosion Monitoring: Study on Concrete Under Varying Conditions

open access: yesStructural 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

On-site corrosion monitoring experience in concrete structures: potential improvements on the current-controlled polarization resistance method

open access: yesMateriales de Construccion, 2021
The need for proactive maintenance of reinforced concrete structures with non-destructive testing (NDT) is less disputable today than ever. One of the most promising strategies in this regard is the in-situ measurement of the reinforcement corrosion rate.
J. E. Ramón   +2 more
doaj   +1 more source

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