Results 21 to 30 of about 9,198 (264)

MODELLING THE CARBONATED CONCRETE REALKALIZATION

open access: yesJOURNAL OF CIVIL ENGINEERING AND MANAGEMENT, 2009
The presented model of carbonated concrete realkalization is compiled on the basis of the multi‐component medium theory equations. The process equations have been obtained from an analysis of the partial equations of mass, electric charge, momentum, energy, and entropy inequality.
Jaśniok, Mariusz, Zybura, Adam
openaire   +3 more sources

Analysis of Carbonation Behavior of Cracked Concrete

open access: yesMaterials, 2022
The crack and carbonation of concrete pose a great challenge to its durability. Therefore, this paper studies the effect of cracks on the carbonation depth of cement paste under different factors. The relationship between carbonation and cracks was determined, and the carbonation mechanism of cement paste with cracks was clarified.
Qun Guo   +3 more
openaire   +2 more sources

Sequestration of CO2 by Concrete Carbonation

open access: yesEnvironmental Science & Technology, 2010
Carbonation of reinforced concrete is one of the causes of corrosion, but it is also a way to sequester CO2. The characteristics of the concrete cover should ensure alkaline protection for the steel bars but should also be able to combine CO2 to a certain depth. This work attempts to advance the knowledge of the carbon footprint of cement. As it is one
Galán, Isabel   +3 more
openaire   +3 more sources

Optimization of gas-solid carbonation conditions of recycled aggregates using a linear weighted sum method

open access: yesDevelopments in the Built Environment, 2021
Optimization of pretreatment and various gas-solid interaction conditions is necessary for effective carbonation of recycled coarse aggregates derived from concrete wastes (RCA).
Adebayo Olatunbsoun Sojobi   +4 more
doaj   +1 more source

Experimental Methods to Evaluate the Carbonation Degree in Concrete—State of the Art Review

open access: yesApplied Sciences, 2023
The carbonation action in concrete, in which carbonation reactions transform calcium hydroxide into calcium carbonate, is considered as a multi-phase physico-chemical process.
Huyen Bui   +2 more
doaj   +1 more source

Application of Adaptive Neuro-Fuzzy Inference Systems with Principal Component Analysis Model for the Forecasting of Carbonation Depth of Reinforced Concrete Structures

open access: yesApplied Sciences, 2023
The carbonation of reinforced concrete is one of the intrinsic factors that cause a significant decrease in service performance in concrete structures. To decrease the effect of carbonation-induced corrosion during the lifetime of the concrete structure,
Juan Liu, Xuewei Bai
doaj   +1 more source

Carbonation of Functionally Graded Concrete

open access: yes, 2023
In this thesis, the carbonation of functionally graded concrete is investigated through a combination of experimental and analytical approaches. The properties of functionally graded concrete vary throughout the cross-section to satisfy performance ...

core   +1 more source

Carbonation of concrete cover of reinforcement as a cause of loss of durability of structures [PDF]

open access: yesArchives of Civil Engineering, 2023
The article discusses the physical and chemical mechanisms of the carbonation phenomenon itself, as well as points out the synergistic effect of frost destruction and concrete carbonation on reinforced concrete elements.
Kaja Kłos   +3 more
doaj   +1 more source

Study of Durability of Concrete with Fly Ash as Fine Aggregate under Alternative Interactions of Freeze-Thaw and Carbonation

open access: yesAdvances in Civil Engineering, 2019
To study the durability of concrete with fly ash as fine aggregate subjected to alternative attacks of freeze-thaw and carbonation, the appearance, mass loss, relative dynamic modulus of elasticity, relative compressive strength, and carbonation depth of
Mingjie Mao   +3 more
doaj   +1 more source

Preliminary Investigation of Carbonation Problem Progress in Concrete buildings of North Cyprus

open access: yesMATEC Web of Conferences, 2018
Carbonation process is regarded as one of the most critical durability problem in concrete. As a result of carbonation process, the pH level in concrete is reduced and corrosion of reinforcements initiates, yielding significant damage both in ...
Malami Salim Idris   +2 more
doaj   +1 more source

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