한국콘크리트학회:학술대회논문집 (Proceedings of the Korea Concrete Institute Conference)
- 한국콘크리트학회 1995년도 봄 학술발표회 논문집
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- Pages.94-99
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- 1995
나프탈렌술폰산축합물과 무수말레인산계 공중합체를 첨가한 시멘트의 분산효과 및 경시변화에 관한 연구
A Study on the Dispersion Effects and Slump for Elapsed Time of Cement Admixed with Naphthalene Sulfonated Condensate and Maleic Anhydride Copolymer
초록
Naphthalene sulfonated condensatd(NSF) has been widely using for the superplasticizing of ement and concrete. But NSF has a very large mobility loss with elapsed tiom. To retain mobility of NSF during a certain time, maleic anhydride and acrylic acid copolymer(MA) was polymerized and mixed with NSF in order to perpare admixture holding mobility-retention property of cement. By applying this admixture for ement paste, we examined the fluidity and mobility retention property as a function to elapsed time and measured the compressive strength of mortar with curing time. As a result, NSF containing 20wt% of MA showed very excellent fluidity and mobility-retention property. These properties were affected by the added amount of admixture and the ratio of water to cement.
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