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Title |
A Study on the Performance Improvement and Long-Term Strength Properties of Eco-cement Concrete
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Keywords |
에코시멘트 ; 플라이애쉬 ; 강도개선 ; 세공구조 eco-cement ; fly ash ; improvement in strength ; pore structure |
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Abstract |
Concrete using eco-cement has a problem with long-term strength development. However, currently, a long-term strength development mechanism is not confirmed, resulting in a lack of application of eco-cement in construction fields. In this study, the curing humidity influence on development in long-term strength of concrete using eco-cement and the relationship between strength and pore structure were examined. The results showed that wet cured eco-cement with a high water/cement ratio showed serious long-term strength reduction due to non-reduction of pore volume (pore size over 10 nm) in mortar caste with eco-cement. Also, the study results on improvement of long-term strength of eco-cement by partial replacement with ordinary portland cement and finely-ground fly ash showed that both of these alternatives improved long-term strength of concrete caste with eco-cement due to gradual refinement of their micro-structure.
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