Next Article in Journal
Qualitative Prediction Model for Dynamic Behavior of Ballasted Tracks
Next Article in Special Issue
Durability Assessment of Recycled Aggregate HVFA Concrete
Previous Article in Journal
Secure Key Agreement and Authentication Protocol for Message Confirmation in Vehicular Cloud Computing
Previous Article in Special Issue
Properties of Foamed Lightweight High-Performance Phosphogypsum-Based Ternary System Binder
Article

Effect of Fly Ash as Cement Replacement on Chloride Diffusion, Chloride Binding Capacity, and Micro-Properties of Concrete in a Water Soaking Environment

Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(18), 6271; https://doi.org/10.3390/app10186271
Received: 16 August 2020 / Revised: 30 August 2020 / Accepted: 7 September 2020 / Published: 9 September 2020
(This article belongs to the Special Issue High-Performance Eco-Efficient Concrete)
This paper experimentally studies the effects of fly ash on the diffusion, bonding, and micro-properties of chloride penetration in concrete in a water soaking environment based on the natural diffusion law. Different fly ash replacement ratio of cement in normal concrete was investigated. The effect of fly ash on chloride transportation, diffusion, coefficient, free chloride content, and binding chloride content were quantified, and the concrete porosity and microstructure were also reported through mercury intrusion perimetry and scanning electron microscopy, respectively. It was concluded from the test results that fly ash particles and hydration products (filling and pozzolanic effects) led to the densification of microstructures in concrete. The addition of fly ash greatly reduced the deposition of chloride ions. The chloride ion diffusion coefficient considerably decreased with increasing fly ash replacement, and fly ash benefits the binding of chloride in concrete. Additionally, a new equation is proposed to predict chloride binding capacity based on the test results. View Full-Text
Keywords: fly ash; carbon dioxide emission; chloride diffusion; binding capacity of chlorine fly ash; carbon dioxide emission; chloride diffusion; binding capacity of chlorine
Show Figures

Figure 1

MDPI and ACS Style

Liu, J.; Liu, J.; Huang, Z.; Zhu, J.; Liu, W.; Zhang, W. Effect of Fly Ash as Cement Replacement on Chloride Diffusion, Chloride Binding Capacity, and Micro-Properties of Concrete in a Water Soaking Environment. Appl. Sci. 2020, 10, 6271. https://doi.org/10.3390/app10186271

AMA Style

Liu J, Liu J, Huang Z, Zhu J, Liu W, Zhang W. Effect of Fly Ash as Cement Replacement on Chloride Diffusion, Chloride Binding Capacity, and Micro-Properties of Concrete in a Water Soaking Environment. Applied Sciences. 2020; 10(18):6271. https://doi.org/10.3390/app10186271

Chicago/Turabian Style

Liu, Jun, Jiaying Liu, Zhenyu Huang, Jihua Zhu, Wei Liu, and Wei Zhang. 2020. "Effect of Fly Ash as Cement Replacement on Chloride Diffusion, Chloride Binding Capacity, and Micro-Properties of Concrete in a Water Soaking Environment" Applied Sciences 10, no. 18: 6271. https://doi.org/10.3390/app10186271

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop