Study on the Law of Durability and Fracture Energy of Structural Engineering Cement Mortar in Sulfate Erosion

Yijie Zhang; Miaojun Sun; Zixuan Zhang; HaoJiang; Xingzhi Ba

doi:10.2991/978-94-6463-449-5_41

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Study on the Law of Durability and Fracture Energy of Structural Engineering Cement Mortar in Sulfate Erosion

Authors

Yijie Zhang², Miaojun Sun¹^{, 3}^{, *}, Zixuan Zhang², HaoJiang², Xingzhi Ba²^{, *}

¹Powerchina Huadong Engineering Corporation Limited, 310000, Hangzhou, China

²School of Qilu Transportation Engineering, Shandong University, 250101, Jinan, China

³Zhejiang Engineering Research Center of Marine Geotechnical Investigation Technology and Equipment, 310000, Hangzhou, China

^*Corresponding author. Email: sun_mj2@hdec.com

^*Corresponding author. Email: xingzhi_ba@sdu.edu.cn

Corresponding Authors

Miaojun Sun, Xingzhi Ba

Available Online 30 June 2024.

DOI: 10.2991/978-94-6463-449-5_41 How to use a DOI?
Keywords: sulfate ions; water-cement ratio; cement mortar; permeability; fracture energy
Abstract: The durability of cement mortar in structural engineering is very important to the structural safety and stability, especially under the action of sulfate erosion, and the deterioration speed is faster and more serious. However, the fracture performance of mortar is not clear, so this paper studies the durability and fracture energy law of cement mortar in structural engineering in the process of sulfate erosion. The sulfate corrosion test of ordinary Portland cement mortar with water-cement ratio of 0.4, 0.5 and 0.6 was carried out. The appearance damage of specimens was observed at different erosion ages and the content of sulfate ions in the samples was measured. And the permeability and transmission law of sulfate in cement mortar were studied. The results show that the sulfate attack on the mortar is from the surface to inside, and the smaller the water cement ratio is, the stronger the ability to resist sulfate attack. With the deep penetration depth, the free sulfate ion content And the content of free sulfate ions decreased with the decrease of water-cement ratio. In contrast, the content of sulfate ions in the reaction increased first and then decreased, and finally stabilized. For the mortar surface, the smaller the water-cement ratio, the more the content of sulfate ions, and for the mortar interior, high water-cement ratio of the reaction of the sulfate ion content of the reaction is higher. In the fracture energy aspect, the test pieces with small water-cement ratio first increase and then decrease, and the bigger the water-cement ratio is, the shorter the age of fracture initiation is.
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title: Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
Series: Atlantis Highlights in Engineering
Publication Date: 30 June 2024
ISBN: 978-94-6463-449-5
ISSN: 2589-4943
DOI: 10.2991/978-94-6463-449-5_41 How to use a DOI?
Open Access: Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

ris enw bib

TY  - CONF
AU  - Yijie Zhang
AU  - Miaojun Sun
AU  - Zixuan Zhang
AU  - HaoJiang
AU  - Xingzhi Ba
PY  - 2024
DA  - 2024/06/30
TI  - Study on the Law of Durability and Fracture Energy of Structural Engineering Cement Mortar in Sulfate Erosion
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 420
EP  - 432
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_41
DO  - 10.2991/978-94-6463-449-5_41
ID  - Zhang2024
ER  -

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