Results 1 to 10 of about 2,453 (263)

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

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

A Cenozoic record of the equatorial Pacific carbonate compensation depth [PDF]

Nature, 2012
Atmospheric carbon dioxide concentrations and climate are regulated on geological timescales by the balance between carbon input from volcanic and metamorphic outgassing and its removal by weathering feedbacks; these feedbacks involve the erosion of silicate rocks and organic-carbon-bearing rocks.
Heiko Pälike, Andrew Ridgwell, Kusali Gamage   +2 more
exaly   +8 more sources

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

Limit values of accelerated carbonation resistance to meet EC2 durability requirements [PDF]

Građevinski Materijali i Konstrukcije, 2022
Although accelerated carbonation resistance has been extensively tested, there are no recommendations for the application of test results in codes of practice.
Carević Vedran, Ignjatović Ivan
doaj   +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

Experimental Investigation on Carbonation Behavior in Lime-Stabilized Expansive Soil

Advances in Civil Engineering, 2020
The carbonation behavior of lime-stabilized expansive soil is important for assessing the stabilization efficiency from the perspective of durability. In this study, the accelerated carbonation tests, measurement of pH value distribution, and the free ...
Long Xu, Fusheng Zha, Congmin Liu, Bo Kang, Jingjing Liu, Chuang Yu   +5 more
doaj   +1 more source

Artificial Neural Network Approach to Predict Carbonation Depth in Metakaolin, Brick Powder and Calcined Sediments-Modified Mortars

Modelling in Civil Environmental Engineering, 2023
This research uses Artificial Neural Network (ANN) as a soft computing technique to predict the carbonation depth and service life of cementitious materials with low clinker content.
Benamar Souheyla, Kameche Zine El Abidine, Mamoune Sidi Mohamed Aissa, Siad Hocine, Houmadi Youcef   +4 more
doaj   +1 more source