Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of Foaming Agent on the Characteristic of Mortar

기포제(起泡劑)가 모르터의 특성(特性)에 미치는 영향(影響)

  • Kim, Seong Wan (Dept. of Agricultural Engineering, Call. of Agriculture, Chungnam Natl. Univ.) ;
  • Kang, Sin Up (Dept. of Agricultural Engineering, Call. of Agriculture, Chungnam Natl. Univ.) ;
  • Cho, Seong Seup (Dept. of Agricultural Engineering, Call. of Agriculture, Chungnam Natl. Univ.) ;
  • Sung, Chan Yong (Dept. of Agricultural Engineering, Call. of Agriculture, Chungnam Natl. Univ.)
  • 김성완 (충남대학교 농과대학 농공학과) ;
  • 강신업 (충남대학교 농과대학 농공학과) ;
  • 조성섭 (충남대학교 농과대학 농공학과) ;
  • 성찬용 (충남대학교 농과대학 농공학과)
  • Published : 1984.06.30
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Abstract

To study the effect of foaming agent on the characteristic of mortar, the tests of water-cement ratio and bulk density of mortar were done under the different mixing ratio with G. U and J foaming agents. The results obtained were summarized as follows: 1. At the mixing ratio of 1 : 4 and 0.5% of foaming agent, the highest water-cement ratio was 90% by G, 88.3% by U and 70% by J foaming agent, respectively, being lower than 91.6% of that of cement mortar. 2. At the mixing ratio of 1 : 3 and 3.0% of foaming agent, the water-cement ratio was decreased up to 22.0% by G and 24.1% by U foaming agent, respectively, but it gradually was increased in richer and poorer mixing ratio. At the mixing ratio of 1 : 4 and 3.0% of foaming agent, the water-cement ratio was decreased up to 53.1% by J foaming agent, but it gradually was increased in richer mixing ratio. 3. At the mixing ratio of 1 : 1 and 0.5% of foaming agent, the highest bulk density was $1.981g/cm^3$ by G, $1.863g/cm^3$ by U and $1.149g/cm^3$ by J foaming agent, respectively, being lower than $2.048g/cm^3$ of that of cement mortar. 4. At the mixing ratio of 1 : 2 and 3.0% of foaming agent, the bulk density was decreased up to 20.7% by G, 23.7% by U and 56.5% by J foaming agent, respectively, but it gradually was increased in richer and poorer mixing ratio. 5. The water-cement ratio and bulk density were decreased in more addition of foaming agent, respectively, multiple regression equations of water-cement ratio and bulk density were computed depending on a function of mixing ratios and addition of foaming agents.

본(本) 연구(硏究)는 기포제(起泡劑)가 모르터의 특성(特性)에 미치는 영향(影響)을 연구(硏究)하기 위(爲)하여 기포(氣泡) 모르터의 물-시멘트 비(比)시험(試驗)과 밀도시험(密度試驗)을 배합별(配合別), 기포제별(起泡劑別)로 실시(實施)하였으며, 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 물-시멘트비(比)는 배합비(配合比) 1 : 4, G, U 및 J 기포제(起泡劑) 첨가량(添加量) 0.5%에서 90.0%, 88.3% 및 70.0%로 가장 크게 나타났으나, 보통(普通)모르터의 물-시멘트비(比) 91.6%보다는 작게 나타났다. 2. 물-시멘트비(比)의 감소율(減少率)은 보통(普通)모르터에 비(比)하여 G 및 U 기포(氣包)모르터에서 배합비(配合比) 1 : 3, 기포제(起包劑) 첨가량(添加量) 3.0%일 때 22.0%와 24.1%로 가장 크게 나타났고, 이 보다 부배합(富配合)이나 빈배합(貧配合)일수록 작게 나타났다. 또한 J 기포제(起包劑)에서는 배합비(配合比) 1 : 4, 기포제(起包劑) 첨가량(添加量) 3.0%에서 물-시멘트 비감소율(比減少率)이 53.1%로 가장 크게 나타났고 이보다 부배합(富配合) 일수록 작게 나타났다. 3. 밀도(密度)는 배합비(配合比) 1 : 1, G, U 및 J 기포제(起包劑) 첨가량(添加量) 0.5%에서 $1.981g/cm^3$, $1.863g/cm^3$ 및 $1.149g/cm^3$로 가장 크게 나타났으나, 보통(普通)모르터의 밀도(密度) $2.048g/cm^3$보다는 작게 나타났다. 4. 밀도(密度)의 감소율(減少率)은 보통(普通)모르터에 비(比)하여 G, U 및 J 기포(氣泡)모르터에서 배합비(配合比) 1 : 2, 기포제(起包劑) 첨가량(添加量) 3.0%일 때 20.7%, 23.7% 및 56.5%로 가장 크게 나타났으나, 이보다 부배합(富配合)이거나 빈배합(貧配合)일수록 밀도(密度)의 감소율(減少率)은 작게 나타났다. 5. 물-시멘트비(比)와 밀도(密度)는 기포제(起泡劑)의 첨가량(添加量)이 증가(增加)할수록 감소(減少)되었으며, 또한 배합비(配合比)와 기포제(起包劑) 첨가량(添加量)에 따라 물-시멘트비(比)와 밀도(密度)를 추정(推定)할 수 있는 다중회귀방정식(多重回歸方程式)도 유도(誘導)되었다.

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