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Polymers 2015, 7(9), 1587-1598; doi:10.3390/polym7091472

Effects of DMT and TMPTMA on Working Life of Acrylic Polymer Concrete Exposed to Low Curing Temperatures

1
Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon 200-701, Korea
2
Department of Civil and Environmental Engineering, Gachon University, Seongnam 461-701, Korea
*
Author to whom correspondence should be addressed.
Received: 19 May 2015 / Revised: 14 July 2015 / Accepted: 20 August 2015 / Published: 26 August 2015
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Abstract

Ensuring an appropriate casting time window is of great importance for achieving desired quality and performance of aging materials. In this paper, the effects of promoter and cross-linking agent on the working life—the period a mixture stays in a workable condition—of low-temperature-cured acrylic polymer concrete (PC) are investigated in order to develop mixture proportions that can be effectively applied in cold weather conditions. The experimental variables included in this study are: (1) curing temperatures (−20, −10 and 0 °C); (2) N,N-dimethyl-p-toluidine (DMT) contents (0.5, 1.0, 1.5 and 2.0 phr (parts per hundred parts of resin)); and (3) trimethylolpropane trimethacrylate (TMPTMA) contents (0, 2.5 and 5 phr). Results indicated a strong relevance between binder’s setting time and PC’s working life. Additionally, it was observed that the working life of acrylic PC was substantially shortened as the curing temperature and contents of DMT and TMPTMA increased. Results of a two-way analysis of variance (ANOVA) revealed that TMPTMA had a greater impact on the working life than DMT. Finally, this study developed an equation that can be used to estimate PC working life, based on the binder’s setting time. The findings of this study will be used as valuable information for cold weather applications of acrylic PC. View Full-Text
Keywords: acrylic polymer concrete; working life; setting time; curing temperature; promoter; cross-linking agent acrylic polymer concrete; working life; setting time; curing temperature; promoter; cross-linking agent
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yeon, K.-S.; Cha, J.-Y.; Yeon, J.H. Effects of DMT and TMPTMA on Working Life of Acrylic Polymer Concrete Exposed to Low Curing Temperatures. Polymers 2015, 7, 1587-1598.

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