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J. Korean Ceram. Soc. > Volume 31(9); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(9): 941.
수중에서 시멘트 모르타르의 재료분리저항성에 관한 연구
정민철, 남기웅, 정윤중
명지대학교 공과대학 무기재료공학과
A Study on the Material Resistance Against Segregation of Cement Mortar in Water
An underwater grout on material resistance against segregation in water were studied by water soluble polymer (methyl cellulose and acrylic acid ester and styrene). The mechanical properties of the grout agents were investigated through the observation of the microstructure and application of fracture mechanic. When the soluble polymer MC+AAES added with 0.6 wt% to the underwater grout agents the compressive strength, flexural strength and Young's modulus were about 58 MPa, 10 MPa and 3.2 GPa respectively, and critical stress intensity was about 0.8 MNm-1.5. It can be considered that the strength improvement and fracture toughness increase may be due to the pore decrease and bonding force by material resistance against segregation in water.
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