Title:
Synthesis and Analysis of an Anti-Segregation Admixture Based on Acrylamide Copolymer
Author(s):
Tao Ni, Serina Ng, Zhaoyang Liu, Yongmei Wang, Xin Song, Ke Feng
Publication:
Symposium Paper
Volume:
354
Issue:
Appears on pages(s):
347-356
Keywords:
acrylamide copolymer; anti-segregation admixture; compressive strength
DOI:
10.14359/51736087
Date:
7/1/2022
Abstract:
Anti-segregation can be employed to avoid the segregation of concrete. Here, we present a type of polymer-based anti-segregation agent, which is the copolymer of acrylamide and 2-acrylamide-2-methylpropane sulfonic acid. The composition and structure were characterized by FT-IR, NMR, and light scattering. Compared with the cellulose derivative, the copolymer can improve not only the homogeneity and bleeding resistance, but also increase the compressive strengths of the concrete by 4 to 5 MPa across all testing periods, up to 28 days. A highlight of the admixture is that can also be used to restore the workability of concrete isolated on site. Finally, the anti-segregation mechanism of the copolymer was analyzed in this article.
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