Effects of TMPTMA and Silane on the Compressive Strength of Low-Temperature Cured Acrylic Polymer Concrete

초록

This study addresses the effects of additives on the compressive strength of low-temperature cured acrylic polymer concrete (PC). Three curing temperatures (0 degrees C, 210 degrees C, and 220 degrees C) and five ages (6, 12, 24, 72, and 168 h) with two different types of additives [ trimethylolpropane trimethacrylate (TMPTMA) and silane] were investigated. As a result, the compressive strength tended to decrease as the curing temperature decreased. The compressive strengths at 24 h were approximately 90% of those at 168 h at both curing temperatures of 0 degrees C and 220 degrees C, indicating that the rate of early age strength development was quite high even at a very low curing temperature range. The results of two-way variance analysis revealed that silane had a greater impact on the compressive strength than TMPTMA. About 13%-23% strength improvements with a 168-h compressive strength of over 80 MPa could be obtained at 220 degrees C by adding silane. Furthermore, this study proposed optimum mixture proportions of acrylic PC that generate a working life of 50-70 minutes with a compressive strength of 80 MPa at subzero temperatures. The findings of this study are expected to be effectively used in field applications of acrylic PC, especially in the cold regions during winter season. (C) 2014 Wiley Periodicals, Inc.

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