| Silicate계 콘크리트 침투성 함침제의 탄산화 및 염해 저항성 |
| 송훈, 추용식, 이종규 |
| 요업기술원 세라믹.건재본부 |
| Carbonation and Cl− Penetration Resistance of Alkali Silicate Impregnant of Concrete |
| Hun Song, Yong-Sik Chu, Jong-Kyu Lee |
| Ceramic & Building Materials Division, Korea Institute of Ceramic Engineering & Technology |
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| ABSTRACT |
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Every concrete structure should continue to perform its intended functions such as to maintain the required strength and durability during its lifetime. Deterioration of the concrete structure, however, occurs more progressively from the outside of the concrete exposed to severe conditions. Main deteriorations in concrete structures result from carbonation, chloride ion attack and frost attack. Concrete can therefore be more durable by applying surface protection to increase its durability using impregnants, which are normally classified into two large groups in polymeric and silicate materials. Concrete impregnants are composed of silanes and alkali silicates (sodium, potassium and lithium silicate). Thus, this study is concerned with elevating the carbonation and Cl- penetration resistance of concrete structures by applying alkali silicate hydrophilic impregnants including lithium and potassium silicates. From the experimental test results, lithium and potassium silicates produced a good improvement in carbonation resistance and are expected to be used as hydrophilic impregnants of concrete structures. |
| Key words:
Alkali Silicate, Impregnant, Hydrophilic, Carbonation, Durability |
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