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Title |
Evaluation on the Performance of Silica Fume Blended Cement Matrix Exposed to External Sulfate Attack
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Keywords |
실리카 퓸 ; 황산염침식 ; 성능저하 ; 공극특성 Silica fume ; Sulfate attack ; Deterioration ; Characteristic of pore |
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Abstract |
The present study evaluates the resistance to sulfate attack of cement matrix with or without silica fume. The main variable was the replacement levels of silica fume. In order to introduce sulfate attack to cement matrix, mortars and pastes was exposed to sodium sulfate solution for 510 days. Visual examination, expansion and compressive strength loss of mortars in addition to characteristics of pore for the paste samples were regularly investigated. From the test results, it was clearly observed that the cement matrix with silica fume was very resistant to sulfate attack irrespective of the replacement levels of silica fume. However, the severe deterioration due to sulfate attack was found in cement matrix without silica fume.
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