Journal ArticleDOI
Quantitative study of meso-damage process on concrete by CT technology and improved differential box counting method
TLDR
In this paper, an improved differential box counting (IDBC) method was proposed to calculate the fractal dimension of the CT images, which could describe the entire damage process of concrete.About:
This article is published in Measurement.The article was published on 2020-08-01. It has received 26 citations till now. The article focuses on the topics: Box counting & Fractal.read more
Citations
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Evaluation of Corrosion Damage in Sulfate-Attacked Concrete by CT, Ultrasonic Pulse Velocity Testing and AHP Methods
TL;DR: In this paper , the authors presented an evaluation method of corrosion damage for the sulfate-attacked concrete by CT, ultrasonic velocity testing and AHP methods, and the results show that the evaluation method proposed in this paper could more accurately evaluate the corrosion damage in the sulfately-attacking concrete structures, and their evaluation results were more in line with reality.
Journal ArticleDOI
Ultrasonic and X-CT measurement methods for concrete deterioration of segmental lining under wetting-drying cycles and sulfate attack
TL;DR: In this article , a method to assess deterioration of concrete based on X-CT scanning ultrasonic testing and sulfate attack model is proposed, which provides a potential application for the deterioration assessment of sulfate-attacked tunnel segmental lining.
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Experimental Study on the Formation and Characteristics of Mud Filtration Cake in Large-Diameter Slurry Shield Tunneling
TL;DR: In this article, the formation and characteristics of mud filtration cake on the excavation surface during large-diameter slurry shield tunneling, penetration tests of mud slurries in different soils were carried out using a self-made device, and the microstructures of different mudfiltration cakes were observed using scanning electron microscopy.
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Comprehensive Testing of Sulfate Erosion Damage of Concrete Structures and Analysis of Silane Coating Protection Effect
TL;DR: In this article , a combination of ultrasonic velocimetry, CT (Computed tomography) scan imaging, NMR (Nuclear Magnetic Resonance) pore structure analysis, strength testing and other methods are used to analyze the strength, ultrasonic wave velocity, pore structures and other characteristics of the specimens during sulfate erosion.
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A one dimensional ubiquitiform damage model for quasi-brittle materials
TL;DR: Considering the self-similar characteristic of irregular pore network of materials during the damage evolution process, a pore ubiquitiform model (PUM) was developed to characterize the multiscale pore or micro-crack network of quasi-brittle materials, and then based on the PUM, the ubiquitial damage model (UDM) is proposed to describe the damage transformation process of quasibrittle material under quasi-static uniaxial tensile loading as discussed by the authors .
References
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Journal ArticleDOI
Fractal character of fracture surfaces of metals
TL;DR: In this article, a new method, slit island analysis, is introduced to estimate the fractal dimension, D. The estimate is shown to agree with the value obtained by fracture profile analysis, a spectral method.
Journal ArticleDOI
Fractals: Form, Chance, and Dimension.
TL;DR: A condition is the on that will make you feel that you must read as mentioned in this paper, which is the condition that makes us feel that reading is a need and a hobby at once.
Journal ArticleDOI
An improved box-counting method for image fractal dimension estimation
Jian Li,Qian Du,Caixin Sun +2 more
TL;DR: A new model is proposed to assign the smallest number of boxes to cover the entire image surface at each selected scale as required, thereby yielding more accurate estimates of fractional dimension estimation accuracy.
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Two-dimensional X-ray CT image based meso-scale fracture modelling of concrete
TL;DR: In this paper, a meso-scale finite element model with realistic aggregates, cement paste and voids of concrete is developed using micro-scale X-ray Computed Tomography images.