Proceedings of the 2024 10th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2024)

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Synthesis and Properties of an EPEG Slump Retaining Polycarboxylic Acid Superplasticizer

Authors
Qian Zhao1, Xiang-Jie Meng2, *
1Chongqing JianYan KZJ New Materials Co., Ltd, Chongqing, 402761, China
2School of Materials Science and Engineering, Chongqing University, Chongqing, 400045, China
*Corresponding author. Email: 280353277@qq.com
Corresponding Author
Xiang-Jie Meng
Available Online 3 March 2025.
DOI
10.2991/978-94-6463-658-1_78How to use a DOI?
Keywords
EPEG; conversion rate; molecular chain distribution; dispersion retention
Abstract

In order to meet the special requirements for long-term slump retention of concrete under extreme conditions such as long distance transportation and super high-rise pumping construction, an EPEG slump retaining polycarboxylic acid superplasticizer (LT-PCE) was prepared by free radical aqueous solution polymerization at room temperature, which used ethylene glycol monovinyl polyoxyethylene ether (EPEG-2400), acrylic acid (AA), hydroxypropyl acrylate (HPA) as comonomers, β-mercaptoethanol as chain transfer agent, hydrogen peroxide and binary complexes of ferrous sulfate/formaldehyde sodium bisulfate as oxidation-reduction system. The molecular structure and mechanical properties of LT-PCE and commercial high performance EPEG polycarboxylic acid slump retaining agent (CA-PCE) were compared and analyzed. The results showed that LT-PCE was a polymer containing a variety of functional groups, and its molecular chain was dominated by ether macromonomers and supplemented by ester macromonomers. Compared with CA-PCE, LT-PCE has significantly higher conversion rate and more uniform molecular chain distribution, which can significantly improve the dispersion retention performance and mechanical strength of concrete.

Copyright
© 2025 The Author(s)
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 10th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2024)
Series
Advances in Engineering Research
Publication Date
3 March 2025
ISBN
978-94-6463-658-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-658-1_78How to use a DOI?
Copyright
© 2025 The Author(s)
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

risenwbib
TY  - CONF
AU  - Qian Zhao
AU  - Xiang-Jie Meng
PY  - 2025
DA  - 2025/03/03
TI  - Synthesis and Properties of an EPEG Slump Retaining Polycarboxylic Acid Superplasticizer
BT  - Proceedings of the 2024 10th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2024)
PB  - Atlantis Press
SP  - 761
EP  - 766
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-658-1_78
DO  - 10.2991/978-94-6463-658-1_78
ID  - Zhao2025
ER  -