지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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It has been well known that concrete structures exposed to acid and sulfate environments such as sewer etc. show significant decrease in their durability due to chemical attack. Such deleterious acid and sulfate attacks lead to expansion and cracking in concrete,and thus, eventually result in damage to cement mortar by forming expansive hydration products due to the reaction between cement hydration products and acid and sulfate ions. In this study, the effect of fly ash and blast furnace slag on the bond performances of structural synthetic fiber in latex modified cement mortar under sulfate environments. Fly ash and blast furnace slag contents ranging from 0 % to 20 % are used in the mix proportions. The latex modified cement mortar specimens were immersed in fresh water, 8 %sodium sulfate (Na2SO4) solutions for 28 and 50 days, respectively. Pullout tests are conducted to measure the bond performance of structural synthetic fiber from latex modified cement mortar after sulfate environments exposure. Test results are found that the incorporation of fly ash and blast furnace slag can effectively enhance the PVA fiber-latex modified cement mortar interfacial bond properties (bond behavior, bond strength and interface toughness) after sulfate environments exposure. The microstructural observation confirms the findings on the interface bond mechanism drawn from the fiber pullout test results under sulfate environments.
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참고문헌 (16)
참고문헌 신청
Al-Amoudi, O. S. B. / 1998 / Sulfate Attack and Reinforcement Corrosion in Plain and Blended Cements Exposed to Sulfate Environments / Building and Environment 33 (1) : 53 ~
Bentur, A. / 1990 / Fibre reinforced cementitious composites / Elsevier Applied Science
Chan, Y. W. / 2004 / Effect of silica fume on steel fiber bond characteristics in reactive powder concrete / Cement and Concrete Research 34 (7) : 1167 ~ 1172
Kim, J. H. / 2008 / Effects of the geometry recycled PET fiber reinforcement on shrinkage of cement-based composites / Composites Part B: Engineering 39 (3) : 442 ~ 450
Mangat, P. S. / 1995 / Influence of Fly Ash, Silica Fume, and Slag on Sulfate Resistance of Concrete / ACI Materials Journal 92 (5) : 542 ~ 552
Bentur, A. / 1990 / Fibre reinforced cementitious composites / Elsevier Applied Science
Chan, Y. W. / 2004 / Effect of silica fume on steel fiber bond characteristics in reactive powder concrete / Cement and Concrete Research 34 (7) : 1167 ~ 1172
Kim, J. H. / 2008 / Effects of the geometry recycled PET fiber reinforcement on shrinkage of cement-based composites / Composites Part B: Engineering 39 (3) : 442 ~ 450
Mangat, P. S. / 1995 / Influence of Fly Ash, Silica Fume, and Slag on Sulfate Resistance of Concrete / ACI Materials Journal 92 (5) : 542 ~ 552
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