Effects of Silica Fume Content and Polymer-Binder Ratio on Properties of Ultrarapid-Hardening Polymer-Modified Mortars

• Published in: International journal of concrete structures and materials Vol. 10; no. 2; pp. 249 - 256
• Main Authors: Choi, Jong Yun, Joo, Myung-Ki, Lho, Byeong Cheol
• Format: Journal Article
• Language: English
• Published: Dordrecht 한국콘크리트학회 01.06.2016; Springer Netherlands; Springer Nature B.V
• Subjects: Building Materials; Engineering; Solid Mechanics; Structural Materials; 토목공학; polymer-binder ratio; strength; chloride ion penetration depth; water absorption; carbonation depth; polymer-modified mortar; silica fume content
• ISSN: 1976-0485; 2234-1315
• DOI: 10.1007/s40069-016-0136-9

This paper deals with the effects of silica fume content and polymer-binder ratio on the properties of ultrarapid-hardening polymer-modified mortar using silica fume and ethylene-vinyl acetate redispersible polymer powder instead of styrene-butadiene rubber latex to shorten the hardening time. The ultrarapid-hardening polymer-modified mortar was prepared with various silica fume contents and polymer-binder ratios, and tested flexural strength, compressive strength, water absorption, carbonation depth and chloride ion penetration depth. As results, the flexural, compressive and adhesion strengths of the ultrarapid-hardening polymer-modified mortar tended to increase as increasing polymer-binder ratio, and reached the maximums at 4 % of silica fume content. The water absorption, carbonation and chloride ion penetration resistance were improved according to silica fume content and polymer-binder ratio.