Investigation of the permeability of porous concrete reconstructed using probabilistic description methods

Chung, Sang-Yeop; Han, Tong Seok; Kim, Se Yun; Lee, Tae Hyung

doi:10.1016/j.conbuildmat.2014.06.013

Cited by 39 publications

(12 citation statements)

References 25 publications

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“…Also, constant head permeability appears to be a function of pasted drain down, effective air void content and void size in NFC specimen. The reserve of the falling head and constant head methods agree reasonably well for laboratory sample as widely reported [91,63,125,101,124]. In order to understand the microstructure, Bentz [144] through virtual model compared the percolation characteristics and transport properties of actual NFC and found to be closest to the actual PC.…”

Section: Permeabilitysupporting

confidence: 69%

“…Later Sumanrooriya et al [90] predicted permeability of NFC mixture through planar images of specimen and through experimental investigation and reported that they were in good agreement with each Figure 10: Falling head permeability apparatus [85] Figure 11: Variation in water permeability v/s porosity from previous studies [124] other. Since clogging is biggest threat for permeability, Alamd and Haselbach [122] studies different specifications and designs to make clogging resistant NFC.…”

Section: Permeabilitymentioning

confidence: 65%

“…In order to understand the microstructure, Bentz [144] through virtual model compared the percolation characteristics and transport properties of actual NFC and found to be closest to the actual PC. Also CT image (Computed tomography) and probalistic description method were utilized to analyze the microstructure and found that void distribution strongly affects strength and percolation [124].…”

Section: Permeabilitymentioning

confidence: 99%

See 2 more Smart Citations

Recent Advancement in Proportioning of No-fine Concrete - Review

Singh

Goel

2019

J. Today’s Ideas - Tomorrow’s Technol.

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The paper highlight characteristics of no fine concrete (NFC) by evaluating and interpreting the research work undertaken by research scholars around world in past. It explains the approach for better performances. It helps to understand and identify the difference between knowledge and actual performance on ground which stops it from wide and acceptable application throughout the globe. A comprehensive investigation of proportioning of no fine Concrete has been discussed. Identification of relationship between mechanical properties with its design and pore structure of NFC will help us in studying ways of its better utilization. The specific reference has been made for India to understand level of research & development in laboratories and status of different applications at different levels.

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Section: Permeabilitysupporting

confidence: 69%

Section: Permeabilitymentioning

confidence: 65%

Section: Permeabilitymentioning

confidence: 99%

See 1 more Smart Citation

Recent Advancement in Proportioning of No-fine Concrete - Review

Singh

Goel

2019

J. Today’s Ideas - Tomorrow’s Technol.

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“…In line with that, Chung et al [18] used computer tomography images to generate 3D models of PC samples. From this models, they proposed a method using low-order probability functions to generate reconstructed 3D model from the hardened specimens.…”

Section: Introductionmentioning

confidence: 98%

Advanced numerical assessment of the permeability of pervious concrete

Pieralisi

Cavalaro

Aguado

2017

Cement and Concrete Research

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The most singular characteristic of pervious concrete is its interconnected porosity that allows water to flow through at high rates. The objective of this paper is to develop and validate an advanced DEM-CFD model to assess the permeability of pervious concrete numerically, taking into account the influence of the composition and of the compaction process. An extensive experimental program with 1 aggregate grading size, 4 paste contents and 3 degrees of compaction was conducted to validate the numerical approach. Results show that the DEM-CFD model is capable of predicting the permeability depending on the variables considered here. Moreover, flow parameters derived from the numerical simulations help understand the experimental results. The study confirms that, instead of relying on trial and error experiments, it is possible to use advanced numerical models to accelerate the definition of mixes and the production process, reducing the time, efforts and costs required.Peer ReviewedPostprint (author's final draft

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“…Here, two types of probabilistic functions, two-point correlation and lineal-path, are used to characterize the pore distribution within the foamed samples. These probabilistic functions are shown to be effective in describing the spatial distributions of pores [11,20,36]. The two-point correlation function for a pore phase, P pp (r), is the probability that any two randomly-placed points are positioned in the pore region ( Figure 6a); this function is utilized to characterize the clustering level of pores [20,22].…”

Section: Low-order Probability Functionsmentioning

confidence: 99%

Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches

et al. 2017

Self Cite

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Foamed concrete contains numerous pores inside the material, and these pores are a significant factor determining the material characteristics. In particular, the pore distribution characteristics of foamed concrete significantly affect its thermal and mechanical properties. Therefore, an appropriate investigation is necessary for a more detailed understanding of foamed concrete. Here, a set of foamed concrete samples with different densities is used in order to investigate the density effects on the pore characteristics, as well as the physical properties of the materials. The pore distribution characteristics of these samples are investigated using an X-ray micro-computed tomography (micro-CT) imaging technique with probabilistic and quantitative methods. Using these methods, the anisotropy, the pore circularity factor and the relative density of cell thickness are examined. The thermal (thermal conductivity) and mechanical (directional modulus and strength) properties of each foamed specimen are computed using numerical simulations and compared with experimental results. From the obtained results, the effects of the pore sizes and shapes on the local and global properties of the foamed concrete are examined for developing advanced foamed concrete with lower thermal conductivity by minimizing the strength reduction.

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Investigation of the permeability of porous concrete reconstructed using probabilistic description methods

Cited by 39 publications

References 25 publications

Recent Advancement in Proportioning of No-fine Concrete - Review

Recent Advancement in Proportioning of No-fine Concrete - Review

Advanced numerical assessment of the permeability of pervious concrete

Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches

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