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

Author(s): Jong Yun Choi, Myung-Ki Joo, and Byeong Cheol Lho

Publication: IJCSM

Volume: 10

Issue: 2

Appears on pages(s): 249–256

Keywords: polymer-modified mortar, polymer-binder ratio, silica fume content, strength, water absorption, carbonation depth, chloride ion penetration depth.

DOI: 10.1007/s40069-016-0136-9

Date: 6/30/2016

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