Effects of an amphoteric copolymer on the properties of cementitious materials

Yeong Nain Sheen; Chung Da Ho; Wei Hung Weng; Kung Chung Hsu

doi:10.1002/app.35284

Effects of an amphoteric copolymer on the properties of cementitious materials

Yeong Nain Sheen
, Chung Da Ho
, Wei Hung Weng
, Kung Chung Hsu^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The effects of an amphoteric copolymer, poly(acrylamide-co-(2-(3- carboxyacryloyloxy)-N-(carboxymethyl)-N,N-dimethyl-ethanaminium) (PAC) on the properties of cement pastes or mortars were investigated. PAC was prepared from acrylamide and 2-(3-carboxy-acryloyloxy)-N-(carboxymethyl)-N,N- dimethylethanaminium (CAC) through free radical polymerization. The results indicate that the presence of the polymer delayed the setting of cement pastes; it also reduced the water demand so that the resulting mortars showed improved compressive strength and reduced length change. PAC with about 16.7% CAC and a weight-average molecular weight of about 5 × 10 ⁴ was effective in promoting the material properties of mortars.

Original language	English
Pages (from-to)	2318-2324
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	124
Issue number	3
DOIs	https://doi.org/10.1002/app.35284
Publication status	Published - 2012 May 5

Keywords

amphoteric copolymer
cement
compressive strength
length change
setting
water reduction

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.35284

Cite this

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title = "Effects of an amphoteric copolymer on the properties of cementitious materials",

abstract = "The effects of an amphoteric copolymer, poly(acrylamide-co-(2-(3- carboxyacryloyloxy)-N-(carboxymethyl)-N,N-dimethyl-ethanaminium) (PAC) on the properties of cement pastes or mortars were investigated. PAC was prepared from acrylamide and 2-(3-carboxy-acryloyloxy)-N-(carboxymethyl)-N,N- dimethylethanaminium (CAC) through free radical polymerization. The results indicate that the presence of the polymer delayed the setting of cement pastes; it also reduced the water demand so that the resulting mortars showed improved compressive strength and reduced length change. PAC with about 16.7\% CAC and a weight-average molecular weight of about 5 × 10 4 was effective in promoting the material properties of mortars.",

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doi = "10.1002/app.35284",

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T1 - Effects of an amphoteric copolymer on the properties of cementitious materials

AU - Sheen, Yeong Nain

AU - Ho, Chung Da

AU - Weng, Wei Hung

AU - Hsu, Kung Chung

PY - 2012/5/5

Y1 - 2012/5/5

N2 - The effects of an amphoteric copolymer, poly(acrylamide-co-(2-(3- carboxyacryloyloxy)-N-(carboxymethyl)-N,N-dimethyl-ethanaminium) (PAC) on the properties of cement pastes or mortars were investigated. PAC was prepared from acrylamide and 2-(3-carboxy-acryloyloxy)-N-(carboxymethyl)-N,N- dimethylethanaminium (CAC) through free radical polymerization. The results indicate that the presence of the polymer delayed the setting of cement pastes; it also reduced the water demand so that the resulting mortars showed improved compressive strength and reduced length change. PAC with about 16.7% CAC and a weight-average molecular weight of about 5 × 10 4 was effective in promoting the material properties of mortars.

AB - The effects of an amphoteric copolymer, poly(acrylamide-co-(2-(3- carboxyacryloyloxy)-N-(carboxymethyl)-N,N-dimethyl-ethanaminium) (PAC) on the properties of cement pastes or mortars were investigated. PAC was prepared from acrylamide and 2-(3-carboxy-acryloyloxy)-N-(carboxymethyl)-N,N- dimethylethanaminium (CAC) through free radical polymerization. The results indicate that the presence of the polymer delayed the setting of cement pastes; it also reduced the water demand so that the resulting mortars showed improved compressive strength and reduced length change. PAC with about 16.7% CAC and a weight-average molecular weight of about 5 × 10 4 was effective in promoting the material properties of mortars.

KW - amphoteric copolymer

KW - cement

KW - compressive strength

KW - length change

KW - setting

KW - water reduction

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JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

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ER -

Effects of an amphoteric copolymer on the properties of cementitious materials

Abstract

Keywords

ASJC Scopus subject areas

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