Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Expansion Properties of Mortar Using Waste Glass and Industrial By-Products

폐유리와 산업부산물을 사용한 모르터의 팽창특성

  • Published : 2002.06.01
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Abstract

Waste glass has been increased with the development of industry. The utilization of waste glass for concrete can cause the concrete to be cracked and to be weakened due to an expansion by alkali-silica reaction(ASR). In this study, ASR expansion and properties of strength were analyzed in terms of waste glass color(amber, emerald-green), industrial by-products(ground granulated blast-furnace slag, fly ash), and the content of industrial by-products for reducing ASR expansion caused by the waste glass. The possibility of using glass ground as pozzolanic properties was also analyzed. From the result of this study, the pessimum size of waste glass was 2.5∼1.2 mm regardless of waste glass color. And the smaller than 2.5∼1.2 mm waste glass is, the more decreasing expansion of ASR is. Also, the combination of waste glass with industrial by-products have an effect on reducing the expansion and strength loss caused by ASR between the alkali in the cement paste and the silica in the waste glass, and the glass ground of less than 0.075 mm is applicable as a pozzolanic material.

산업의 발달과 더불어 폐유리의 발생량은 점차 증가되고 있다. 콘크리트에 폐유리를 사용할 경우 알칼리 실리카 반응(ASR)에 의한 팽창으로 콘크리트에 균열이 발생하여 성능저하를 일으킬 수 있다. 본 연구에서는 폐유리의 색깔(갈색, 녹색), 입도 및 폐유리로 인해 발생되는 ASR팽창을 저감시키기 위해 산업부산물의 종류(플라이애시, 고로슬래그 미분말)와 혼입율에 따른 ASR팽창과 강도특성을 분석하였다. 또한, 포졸란 재료로서 폐유리 분말의 사용가능성을 분석하였다. 연구결과, 폐유리의 색깔에 관계없이 폐유리의 퍼시멈 입도는 2.5~l.2mm로 나타났으며, 폐유리의 입도가 2.5~l.2 mm보다 작을수록 팽창은 점차 감소하는 것으로 나타났다. 또한, 폐유리에 산업부산물의 혼입은 ASR로 인한 팽창과 강도저하를 억제시키는데 효과적이며, 0.075 mm미만의 폐유리 분말이 포졸란 재료로서 적용이 가능한 것으로 나타났다.

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References

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