Prediction of the Deterioration Depth of Concrete by Accelerating Calcium Leaching Test

An Cheng; Sao Jeng Chao; Wei Ting Lin; Jia Liang Chang

doi:10.4028/www.scientific.net/AMR.365.3

Paper Titles

Preface and Organizing Committee

Prediction of the Deterioration Depth of Concrete by Accelerating Calcium Leaching Test
p.3

Factors Affecting the Performance of Molten Salt Heat Receiver
p.8

Expressions of Parts Information in Collaborative Design
p.14

Blue Fluorescent Quantum Dots-Based Probe for Detection of Influenza B Virus
p.18

Propagation of SH Wave in Composites with Parallel Cylindrical Nanoholes
p.23

Finite Element Simulation and Respond Surface Optimization on Stretch Bending of Square Tube Aluminum Profile
p.28

Classification of Fine Recycled Aggregate Used in Asphalt Concrete
p.33

Texture Analysis of Turned Surface Images Using Grey Level Co-Occurrence Technique
p.38

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 365Prediction of the Deterioration Depth of Concrete...

Prediction of the Deterioration Depth of Concrete by Accelerating Calcium Leaching Test

Abstract:

The concrete is a solid and porous composite materials, when the concrete exposure to moisture environment for a long-term, the pore water will penetrate into concrete cause hydration products leaching. Leaching of calcium ions increase in porosity and resulting in harmful ions ingress into concrete to reduce strength and durability of concrete. The purpose of this study is to evaluate the effect of water-binder ratio on calcium ion leaching behavior of cement-based material. The ammonium nitrate solution was used to accelerate leaching process. Leaching duration was 56 days, 91 days and 140 days, respectively. The leaching depth and compressive strength were measured. The results showed that leaching resistance increased with a decrease in water/binder ratio. The leaching depth showed that leaching behavior of the specimens without minerals admixtures can be divided into two stages, the first stage was leaching of calcium hydroxide and than the C-S-H gel were leaching.

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Periodical:

Advanced Materials Research (Volume 365)

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3-7

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.365.3

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Online since:

October 2011

Authors:

An Cheng, Sao Jeng Chao, Wei Ting Lin, Jia Liang Chang

Keywords:

Calcium, Concrete, Leaching

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