An amphoteric copolymer as a concrete admixture

K. C. Hsu, J. W. Chen, F. T. Jiang, D. S. Hwung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Superplasticizer is one key component to greatly increase the workability of concrete. In this study, an amphoteric copolymer (PDA) was prepared and evaluated as concrete admixture. PDA was prepared froma-N, N-dimethyl-N-(3-(bcarboxylate) acrylamino) propylammonium ethanate and acrylamide through free radical polymerization. The test results on cement pastes indicate that this polymer could uniformly disperse cement particles and enhance the fluidity of the system. Compared to a commercial sulfonated naphthalene formaldehyde condensates (NSF) superplasticizer, PDA requires less dosage to achieve good fluidity and provides better fluidity retention. Limited test data also show that PDA has better performance than NSF in terms of slump flow and flow retention of the resulting concrete.

Original languageEnglish
Title of host publication8th CanMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
EditorsV.M. Malhotra
PublisherAmerican Concrete Institute
Pages309-320
Number of pages12
ISBN (Electronic)9780870312168
Publication statusPublished - 2006 Oct 1
Event8th CanMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete - Sorrento, Italy
Duration: 2006 Oct 292006 Nov 1

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-239
ISSN (Print)0193-2527

Conference

Conference8th CanMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
Country/TerritoryItaly
CitySorrento
Period2006/10/292006/11/01

Keywords

  • Amphoteric copolymer
  • Cement
  • Concrete
  • Fluidity
  • Workability

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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