Experiment Analysis of Concrete’s Mechanical Property Deterioration Suffered Sulfate Attack and Drying-Wetting Cycles
Joint Authors
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-19
Country of Publication
Egypt
No. of Pages
13
Abstract EN
The mechanism of concrete deterioration in sodium sulfate solution is investigated.
The macroperformance was characterized via its apparent properties, mass loss, and compressive strength.
Changes in ions in the solution at different sulfate attack periods were tested by inductively coupled plasma (ICP).
The damage evolution law, as well as analysis of the concrete’s meso- and microstructure, was revealed by scanning electron microscope (SEM) and computed tomography (CT) scanning equipment.
The results show that the characteristics of concrete differed at each sulfate attack period; the drying-wetting cycles generally accelerated the deterioration process of concrete.
In the early sulfate attack period, the pore structure of the concrete was filled with sulfate attack products (e.g., ettringite and gypsum), and its mass and strength increased.
The pore size and porosity decreased while the CT number increased.
As deterioration progressed, the swelling/expansion force of products and the salt crystallization pressure of sulfate crystals acted on the inner wall of the concrete to accumulate damage and accelerate deterioration.
The mass and strength of concrete sharply decreased.
The number and volume of pores increased, and the pore grew more quickly resulting in initiation and expansion of microcracks while the CT number decreased.
American Psychological Association (APA)
Tian, Wei& Han, Nv. 2017. Experiment Analysis of Concrete’s Mechanical Property Deterioration Suffered Sulfate Attack and Drying-Wetting Cycles. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1124278
Modern Language Association (MLA)
Tian, Wei& Han, Nv. Experiment Analysis of Concrete’s Mechanical Property Deterioration Suffered Sulfate Attack and Drying-Wetting Cycles. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1124278
American Medical Association (AMA)
Tian, Wei& Han, Nv. Experiment Analysis of Concrete’s Mechanical Property Deterioration Suffered Sulfate Attack and Drying-Wetting Cycles. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1124278
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124278