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Comparison of detection methods for carbonation depth of concrete [PDF]

Scientific Reports, 2023
This paper presents comprehensive research of the advantages and applicability of various concrete carbonation detection methods. Employing a combination of Phenolphthalein indicator (PI), Thermogravimetric analysis (TGA), X-ray phase analysis (XRD ...
Bei Li, Ye Tian, Guoyi Zhang, Yu Liu, Huiping Feng, Nanguo Jin, Xianyu Jin, Hongxiao Wu, Yinzhe Shao, Dongming Yan, Zheng Zhou, Shenshan Wang, Zhiqiang Zhang, Jin Chen, Xiaodong Chen, Yunjun Lu, Xinyi Li, Jiaxi Wang   +17 more
doaj   +4 more sources

Critical Carbonation Depth for Initiation of Steel corrosion in Fully Carbonated Concrete and Development of Electrochemical Carbonation Induced Corrosion Model

International Journal of Electrochemical Science, 2009
It is well known that carbonation of concrete initiates corrosion of reinforcing steel by lowering the pH value, but the extent and variety of possible damage has limited research data and there exists a difference of opinion between various researchers ...
Raja Rizwan Hussain, Tetsuya Ishida
doaj   +3 more sources

Predicting carbonation depth in fiber-reinforced ultra-high performance concrete (FR-UHPC) using state-of-the-art machine learning techniques [PDF]

Scientific Reports
Carbonation-induced degradation is one of the leading causes of durability loss in concrete structures. Despite advances in conventional concrete carbonation models, predictive models for fiber-reinforced ultra-high-performance concrete (FR-UHPC) remain ...
Arsalan Mahmoodzadeh, Raouf Hassan, Nejib Ghazouani, Abdulaziz Alghamdi, Abed Alanazi, Shtwai Alsubai, Abdullah Alqahtani, Sivaprakasam Palani   +7 more
doaj   +2 more sources

Effects of Environmental Factors on Concrete Carbonation Depth and Compressive Strength [PDF]

Materials, 2018
Ying Chen
exaly   +2 more sources

New modification of the hestenes-stiefel with strong wolfe line search [PDF]

, 2021
. The method of the nonlinear conjugate gradient is widely used in solving large-scale unconstrained optimization since been proven in solving optimization problems without using large memory storage.
Basri, Srimazzura, Japri, Nur Athira, Mamat, Mustafa   +2 more
core   +1 more source

Carbonation Resistance of Marine Concrete Containing Nano-SiO₂ under the Action of Bending Load

Journal of Marine Science and Engineering, 2023
In order to study the influence of nanomaterials on the carbonation resistance of marine concrete under bending loads, an appropriate amount of nano-SiO2 was added to plain concrete, and a self-developed carbonation box and bending loading device were ...
Maohua Zhang, Zenong Tian, Jiyin Cui
doaj   +1 more source

Performance of GGBS Cement Concrete under Natural Carbonation and Accelerated Carbonation Exposure

Journal of Engineering, 2021
One of the primary problems related to reinforced concrete structures is carbonation of concrete. In many cases, depth of carbonation on reinforced concrete structures is used to evaluate concrete service life.
Jun Zhao, Eskinder Desta Shumuye, Zike Wang, Gashaw Assefa Bezabih   +3 more
doaj   +1 more source

Study on carbonation of construction joints through field tests on a 30-year-old bridge and accelerated carbonation tests

Case Studies in Construction Materials, 2023
Construction joints accelerate concrete carbonation, which is one critical durability concern of concrete infrastructures. However, due to the lack of experimental data, it is still challenging to quantify its negative impact on concrete carbonation ...
Yin Shen, Yi Wang, Xiaoqing Xu, Feipeng Ruan   +3 more
doaj   +1 more source

Carbonation of concrete with construction and demolition waste based recycled aggregates and cement with recycled content [PDF]

, 2020
Durability is a major concern in concrete (particularly recycled concrete) structures exposed to carbonation-induced corrosion, given the social, economic, environmental and safety implications involved.
De Belie, Nele, Medina, C., Saez del Bosque, I. F., Sanchez de Rojas, M. I., Van den Heede, Philip   +4 more
core   +1 more source

Effect of Graphene Nanoplatelet on the Carbonation Depth of Concrete under Changing Climate Conditions

Applied Sciences, 2021
Climate change has been unprecedented in the past decades or even thousands of years, which has had an adverse impact on the mechanical properties of concrete structures. Many researchers have begun to study new concrete materials. Graphene nanoplatelet (
Yingzi Zhang, Yanze Wang, Mingqian Yang, Huatao Wang, Guofang Chen, Song Zheng   +5 more
doaj   +1 more source