Journal ArticleDOI
Damage Evolution Analysis in Mortar, During Compressive Loading Using Acoustic Emission and X-ray Tomography: Effects of the Sand/Cement Ratio
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TLDR
In this article, the authors used acoustic emission and X-ray tomography to identify the mechanisms of damage and the fracture process during compressive loading on concrete specimens, in relation with the microstructure of the material.About:
This article is published in Cement and Concrete Research.The article was published on 2007-05-01. It has received 114 citations till now. The article focuses on the topics: Acoustic emission & Mortar.read more
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Investigation of different fracture modes in cement-based materials by acoustic emission
TL;DR: In this paper, fracture experiments on cementitious specimens are conducted, where the fracture mode is controlled by modifying the experiment geometry and the process is monitored by acoustic emission, and the distinct signature of the cracking modes is reflected on acoustic waveform parameters like the amplitude, RA-value and frequency.
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Damage quantification of intact rocks using acoustic emission energies recorded during uniaxial compression test and discrete element modeling
TL;DR: In this article, acoustic emission (AE) energies recorded during 73 uniaxial compression tests on weak to very strong rock specimens have been analyzed by looking at the variations in b-values, total recorded acoustic energy and the maximum recorded energy for each test.
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Monitoring reinforcement corrosion and corrosion-induced cracking by X-ray microcomputed tomography method
TL;DR: X-ray microcomputed tomography has been used to trace steel corrosion and corrosion-induced cracking in cement paste as discussed by the authors, which can track the time-dependent development of steel corrosion, as well as the subsequent initiation and propagation of corrosion induced cracks.
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Multiscale X-ray tomography of cementitious materials: A review
TL;DR: X-ray computed tomography (CT) is a non-destructive technique that offers a 3D insight into the microstructure of thick (opaque) samples with virtually no preliminary sample preparation as mentioned in this paper.
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Measurement of fracture mechanics parameters of concrete containing fly ash thanks to use of Digital Image Correlation (DIC) method
TL;DR: In this paper, the fracture toughness during Mode I loading of concretes containing the 0, 20% and 30% addition of class F fly ash (FA), was investigated. And the results of the research show the usefulness of the Digital Image Correlation (DIC) method in experiments of that type.
References
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Journal Article
Practical cone-beam algorithm
TL;DR: In this article, a convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections, which has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation.
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Practical cone-beam algorithm
TL;DR: In this article, a convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections, which has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation.
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Mercury porosimetry: An inappropriate method for the measurement of pore size distributions in cement-based materials
TL;DR: In this article, the conditions that must be met for MIP measurements to provide valid estimates of the pore size distribution of porous solids are reviewed and evidence is presented indicating that these conditions are not satisfied in cement-based systems.
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Backscattered electron imaging of cementitious microstructures: Understanding and quantification
TL;DR: In this article, the general microstructural features of hydrated cement pastes are described and the possibilities to quantify backscattered electron imaging images of polished surfaces are described. And an example of the potential for BSE images to study concrete durability is given.
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Effect of drying on cement-based materials pore structure as identified by mercury intrusion porosimetry: A comparative study between oven-, vacuum-, and freeze-drying
TL;DR: In this paper, the effects of four drying methods (oven-drying at 60°C and 105°C, vacuum-dough, and freeze-decompensation) on porosity and pore structure determined by MIP, were compared.