한국도로학회논문집 제21권 제6호 (p.77-84)

도로시설물용 콘크리트 구조물의 유지보수를 위한 유무기계 하이브리드 모르타르 보수재의 내구성능 평가

Durability Assessment of Combined Organic and Inorganic Hybrid Mortar as Repair Materials for Concrete Road Facilities
키워드 :
combined organic and inorganic hybrid mortar,repair materials,concrete road facilities,durability,aggressive environments

목차

ABSTRACT
1. 연구배경 및 목적
2. 실험개요
   2.1. 사용재료
   2.2. 배합 및 시험체 제작
   2.3. 실험방법
3. 실험결과 및 고찰
   3.1. 강도 특성
   3.2. 스케일링 저항성
   3.3. 동결융해 저항성
   3.4. 염소이온 침투저항성
   3.5. 산침식 저항성
4. 결론 및 요약
REFERENCES

초록

PURPOSES: The objective of this study is to evaluate the durable performance of combined organic and inorganic hybrid mortar as repair material (HRM mortar) for concrete road facilities via comparison with that of cement repair materials (IRM mortar).
METHODS : To produce HRM mortars, inorganic materials as binder and 2 mineral fillers were adopted. The ratio of main resin versus hardener was fixed at 1:2. For comparison, IRM mortars made with cement repair materials were also manufactured. Compressive, flexural, and bonding strengths were measured at predetermined periods. For durability assessment, the scaling resistance, freezing & thawing resistance, rapid chloride penetration resistance, and acid attack resistance of those mortars were experimentally monitored.
RESULTS: The durability performances of HRM mortars, especially with respect to freezing & thawing, rapid chloride penetration and acid attack, were identified to be much better than those of IRM mortars. This result implies that HRM is a highly promising and versatile material because of its excellent durability.
CONCLUSIONS: It is concluded that the application of the combined organic and inorganic hybrid mortars is possibly an option for the repair of concrete road facilities exposed to aggressive environments.