Results 21 to 30 of about 408,552 (288)

Proposal for classification of concrete quality based on accelerated carbonation tests

open access: yesCase Studies in Construction Materials, 2023
Reinforcement corrosion is a problem affecting the durability of most concrete structures. When concrete is employed without proper care, it may function inadequately as a barrier, allowing aggressive ions or acidic substances in the atmosphere to attack
Daniel V. Ribeiro   +4 more
doaj   +1 more source

Effect of Different CO2 Treatments on the Metal Leaching in Steel Slag Binders

open access: yesFrontiers in Energy Research, 2021
Carbonation is an effective method to promote the quality of the steel slag binder. In this article, two carbonation approaches, namely hot-stage carbonation and accelerated carbonation, were employed to leach the metals, and the influence mechanism on ...
Yaojun Liu   +5 more
doaj   +1 more source

Accelerating the carbon cycle: the ethics of enhanced weathering [PDF]

open access: yesBiology Letters, 2017
Enhanced weathering, in comparison to other geoengineering measures, creates the possibility of a reduced cost, reduced impact way of decreasing atmospheric carbon, with positive knock-on effects such as decreased oceanic acidity. We argue that ethical concerns have a place alongside empirical, political and social factors as we consider how to best ...
Lawford-Smith, H, Currie, A
openaire   +4 more sources

Behavior of cementitious mixtures with filler carbonate subjected to accelerated carbonation

open access: yesCase Studies in Construction Materials, 2022
Calcium carbonate limestone filler is used as a partial replacement for clinker in cements to reduce carbon dioxide emissions and fill the voids in the cement paste.
Munique Fante   +8 more
doaj   +1 more source

Carbonation Behaviour of Concrete Exposed to Natural and Accelerated Carbonation Conditions [PDF]

open access: yes, 2022
Carbonation is both one of the primary deterioration mechanisms in reinforced concrete structures and a method for sequestration of environmental CO2.

core   +2 more sources

Improvement of Recycled Aggregates Properties by Means of CO2 Uptake

open access: yesApplied Sciences, 2021
Concrete from deconstruction can have a second life in the form of recycled concrete aggregates (RCAs). They unfortunately have poor properties (high porosity and water absorption coefficient (WAC)) with respect to natural aggregates.
Marie Sereng   +4 more
doaj   +1 more source

Mineral carbonation from metal wastes: Effect of solid to liquid ratio on the efficiency and characterization of carbonated products [PDF]

open access: yes, 2014
Mineral carbonation technologies aim at permanently storing CO2 into materials rich in metal oxides. A multi-step mineralization process employing Ca-rich waste streams to precipitate calcium carbonate is investigated in this paper.
Dri, Marco   +4 more
core   +1 more source

Carbonate-bonded construction materials from alkaline residues

open access: yesRILEM Technical Letters, 2017
Accelerated carbonation is a rapidly developing technology that is attracting attention as it uses CO2 as a binder to make construction materials. Originally stemming from geochemical and environmental research into CO2 sequestration or waste remediation,
Peter Nielsen   +4 more
doaj   +1 more source

Accelerated and natural carbonation of concrete with high volumes of fly ash: chemical, mineralogical and microstructural effects [PDF]

open access: yesRoyal Society Open Science, 2019
Today, a rather poor carbonation resistance is being reported for high-volume fly ash (HVFA) binder systems. This conclusion is usually drawn from accelerated carbonation experiments conducted at CO2 levels that highly exceed the natural atmospheric CO2 ...
Philip Van den Heede   +2 more
doaj   +1 more source

Accelerated Weathering and Carbonation (Mild to Intensified) of Natural Canadian Silicates (Kimberlite and Wollastonite) for CO2 Sequestration

open access: yesCrystals, 2021
Canada’s mineral reserves can play a very important role in curbing climate change if natural alkaline minerals are used for the process of mineral carbonation.
Ye Eun Chai   +3 more
doaj   +1 more source

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