In-situ tracking of water transport in cement paste using X-ray computed tomography combined with CsCl enhancing

Yang, Lin; Zhang, Yunsheng; Li, Yong; Zhao, Peng; Cheng, Long

doi:10.1016/j.matlet.2015.08.011

Cited by 72 publications

(34 citation statements)

References 9 publications

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“…Cesium chloride solution was chosen due to the cesium's high atomic number and because the surface tension of cesium chloride solution is close to that of the sodium chloride solution [15]. e brighter regions in X-CT images show the solution ingress into the concrete.…”

Section: Resultsmentioning

confidence: 99%

“…X-ray computed tomography (X-CT) is a nondestructive method which can obtain the microstructure information of materials and is a potential method to investigate the chloride ion penetration paths. Previous researchers have used X-CT to evaluate pore structure [11], cracks [12], ITZs [13], and water transport [14,15] of cement-based materials. In this study, chloride ion penetration paths in RAC are studied using in situ monitoring of microfocus X-ray computed tomography.…”

Section: Introductionmentioning

confidence: 99%

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Application of X‐Ray Computed Tomography in Monitoring Chloride Ion Penetration Paths in Recycled Aggregate Concrete

Zuo

Gao

et al. 2018

Advances in Materials Science and Engineering

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The penetration paths of chloride ions in recycled aggregate concrete (RAC) are of significant interest and have not been well studied previously. This study used X-ray computed tomography (X-CT) as a novel approach to investigate chloride ion penetration paths in RAC. The results indicate that X-CT can be used for the constant monitoring of chloride ion penetration paths in RAC, and the influence of mix proportions on the chloride ion penetration can be understood through the X-CT visualization.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of X‐Ray Computed Tomography in Monitoring Chloride Ion Penetration Paths in Recycled Aggregate Concrete

Zuo

Gao

et al. 2018

Advances in Materials Science and Engineering

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“…Local Portland cement (P•Ⅱ52.5R) with a 28d compressive strength of 55.3 MPa was used, which complies with Chinese standard GB175-2007 and is similar to ASTM C150 type Ⅰ cement [21]. The specific gravity of the cement was 3.1.…”

Section: Experimental Investigation 21 Raw Materialsmentioning

confidence: 99%

Investigation on effect of aggregate on three non-destructive testing properties of concrete subjected to sulfuric acid attack

Xiao

et al. 2016

Construction and Building Materials

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In order to investigate the effect of aggregates on the concrete sulfuric acid resistance, accelerated corrosion experiments were conducted with four types of concretes composed of coarse and fine aggregates with two different chemical compositions. All the concretes with the same water/cement ratio of 0.45, and the pH value was kept in the range of 0.93 to 0.97. With continuous monitoring of each concrete specimen, corrosion depth, mass loss, and dynamic modulus elasticity loss

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“…The factors affecting the test results of nanoindentation and the contact creep function of various phases in cement paste were determined (Liang et al, 2017a,b;Wei et al, 2017). CT technology was used for in-situ monitoring of water and ion intrusion into cement paste and the erosion process was visualized in three dimensions (Yang et al, 2015(Yang et al, , 2018. Based on the CT images, pore-scale modeling and micromechanical modeling of cement paste could be obtained Zhang, 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental-Computational Approach to Investigate Nanoindentation of Magnesium Potassium Phosphate Hexahydrate (MKP) With X-CT Technique and Finite Element Analysis

Zhang

Wang

2020

Front. Mater.

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The magnesium phosphate cement (MPC) is a carbon-free cementitious material, widely used in solidification of nuclear waste, heavy metals, and repair and reinforcement. The magnesium potassium phosphate hexahydrate (MgKPO 4 ·6H 2 O, MKP) is the main hydration product of MPC, seriously affecting the mechanical properties of the MPC. Therefore, this paper presented an experimental-computational approach to investigate the mechanical properties of the MKP through nanoindentation with X-ray Computed Tomography (X-CT) technique and finite element analysis. Firstly, the micro-mechanical properties and structural distribution characteristics of the MKP were tested based on the nanoindentation and the X-CT technique, respectively. Then, the 3D structure grid model of the MKP was obtained based on X-CT data, imported into the ABAQUS software for the finite element simulation. Besides, considering the effect of porosity and pore distribution on the damage, the modified MKP constitutive relation was proposed and input into the X-CT nanoindentation model and the RAP nanoindentation model, respectively. It was found that those two models can effectively describe the mechanical and deformation characteristics of the MKP, which verified the correctness of the modified constitutive relationship of MKP. Finally, the influence of pore distribution on the nanoindentation results was predicted based on the RAP nanoindentation model.

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In-situ tracking of water transport in cement paste using X-ray computed tomography combined with CsCl enhancing

Cited by 72 publications

References 9 publications

Application of X‐Ray Computed Tomography in Monitoring Chloride Ion Penetration Paths in Recycled Aggregate Concrete

Application of X‐Ray Computed Tomography in Monitoring Chloride Ion Penetration Paths in Recycled Aggregate Concrete

Investigation on effect of aggregate on three non-destructive testing properties of concrete subjected to sulfuric acid attack

Experimental-Computational Approach to Investigate Nanoindentation of Magnesium Potassium Phosphate Hexahydrate (MKP) With X-CT Technique and Finite Element Analysis

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