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Title |
Durability of Ultrarapid-Hardening Polymer-Modified Mortar Using Redispersible Polymer Powder
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Keywords |
초속경 폴리머 시멘트 모르타르; 소포제 첨가율; 수밀성; 동결융해 저항성; 내약품성; ultrarapid-hardening polymer-modified mortar; antifoamer content; water absorption; freezing and thawing resistance; chemical resistance |
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Abstract |
The effects of polymer-cement ratio and antifoamer content on the durability of ultrarapid-hardening polymer-modified mortars using redispersible polymer powder are examined. As a result, regardless of the antifoamer content, the setting time of the ultrarapid-hardening polymer-modified mortars using redispersible polymer powder tend to delay with increasing polymer-cement ratio. The water absorption and chloride ion penetration depth of the ultrarapid-hardening polymer-modified mortars using redispersible polymer powder decrease with increasing polymer-cement ratio and antifoamer content. The resistance of freezing and thawing and chemicals improvement is attributed to the improved bond between cement hydrates and aggregates because of the incorporation of redispersible polymer powder
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