Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Hydration Heat and Crack-Reducing Properties of Cement Mortar Added Fluosilicate Salt Based Hydration Heat Reducer

규불화염계 수화열 저감제가 첨가된 시멘트 모르타르의 수화열 변화 및 균열저감 특성

  • Published : 2005.03.01
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Abstract

Fluosilicate salts based hydration heat reducer(SWP-HR), used in this study, is composed of fluosilicate salts, soluble silica, aromatic polymer condensate and nitrate salt based inorganic compound with latent heat property. Effects of SWP-HR addition on the hydration heat and anti-crack property of cement mortar were investigated. Adiabatic hydration temperature and drying shrinkage length of SWP-HR added cement mortar had a tendency to decrease compared to those of cement mortar without SWP-HR addition. Also, it was confirmed through crack pattern experiment of plate-form specimen for elucidating crack-reducing characteristic that anti-crack property of SWP-HR added cement mortar was improved.

본 연구에서는 규불화염, 가용성 실리카, 방향족계 고분자 축합물 그리고 잠열특성을 지닌 질산염계 무기화합물로 구성된 규불화염계 수화열 저감제를 시멘트 모르타르의 수화열 및 건조수축에 미치는 영향을 조사하였다. 규불화염계 수화열 저감제의 첨가로 시멘트 모르타르의 단열상승온도 및 건조수축에 의한 길이변화가 저감되는 특성을 나타내었다. 또한, 규불화염계 수화열 저감제가 첨가된 판상형 시멘트 모르타르 시험체의 균열 패턴을 측정한 결과, 수화열 저감과 건조수축에 의해 길이변화가 저감되는 복합적 효과를 통해 시멘트 모르타르의 균열저감성이 개선되는 것을 확인하였다.

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References

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