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연규석 ( Yeon Kyu-seok ),이현종 ( Lee Hyun-jong ),이재철 ( Yi Jai-chul ),김성기 ( Jin Xing-qi ),최상릉 ( Choi Sang-nung ) 한국농공학회 2006 한국농공학회 학술대회초록집 Vol.2006 No.-
In this study, the polymer mortar was examined experimentally to survey its strength properties, in which MMA using multi-functional admixing agent of PMMA and the reactive additive (RA) for increasing strength and shortening setting time is the main component. Results show that both compressive and flexural strengths show the maximum value when the filler-binder ratio is 1.5. Also both strengths increase as the RA content increases: Those increase 50% when the RA content is 5% and do 80% when the content is 10%. The strengths do not show much variation up to PMMA content of 10%, and rather decrease when the with increasing the content. RA accelerates the hardening to make two-hour-curing strength be 60% and four-hour-curing strength be 90% of 7-day one. Strengths hardly show its difference at above 0℃, but the hardening occurs at the temperature of -10℃ to show 70% of the room-temperature-curing strength. Regardless of RA content, the adhesive strength is about 2.1 MPa when the RA content is over 5%.