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Architecture & Urban Research Institute

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³í¹®¸í »ê¾÷ºÎ»ê¹° ġȯ ¹× ÀúÁ¡µµÇü °í¼º´É °¨¼öÁ¦¸¦ »ç¿ëÇÑ ½Ã¸àÆ® °è¿­ Àç·áÀÇ Á¡µµÀúÇÏ ¹æ¾È ¿¬±¸ / A Study on Viscosity Reducing of Cement-Based Materials by Replacing Byproducts and Adding Low-Viscosity Type HRWR
ÀúÀÚ¸í ¼Õ¹è±Ù½Äº°ÀúÀÚ ; Çѵ¿¿±
¹ßÇà»ç Çѱ¹°Ç¼³¼øÈ¯ÀÚ¿øÇÐȸ
¼ö·Ï»çÇ× Çѱ¹°Ç¼³¼øÈ¯ÀÚ¿øÇÐȸ ³í¹®Áý, Vol.5 No.4 (2017-12)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(353) ÃÑÆäÀÌÁö(6)
ISSN 2288-3320
ÁÖÁ¦ºÐ·ù Àç·á
ÁÖÁ¦¾î ¼Ò¼ºÁ¡µµ ; »ê¾÷ºÎ»ê¹° ºÐ¸» ; ÀúÁ¡µµÇü °í¼º´É °¨¼öÁ¦ ; °í¼º´É °¨¼öÁ¦ ; °í¼º´É ½Ã¸àÆ® ÆäÀ̽ºÆ® ; Plastic viscosity ; Byproduct powders ; Low viscosity type water HRWR ; High range water reducer ; High performance cement paste
¿ä¾à2 The aim of this research is providing a fundamental idea on reducing viscosity of high performance cementitous materials. In rheological aspect, to determine the fluidity of the cementitious materials, both yield stress and viscosity should be controlled. For the high performance cementitious materials with low water-to-binder ratio and high volume fraction, it was difficult to reduce the viscosity with superplasticizer while reducing yield stress was relatively easy. Hence, in this research, with the goal of reducing viscosity of the cementitious materials, both ways of reducing viscosity were suggested: achieving proper combination of powder conditions, and adding low-viscosity typed water reducer. First, by replacing various byproduct powders, specifically, raw coal ash and wasted limestone powder showed favorable results on reducing viscosity of the cement paste. Regarding the low viscosity typed superplasticizer, it showed a good performance on reducing viscosity comparing with generic superplasticizer. Therefore, based on the results of this research, it is expected to provide a fundamental idea on reducing viscosity of cementitious materials by various methods.
¼ÒÀåó Çѱ¹°Ç¼³¼øÈ¯ÀÚ¿øÇÐȸ
¾ð¾î Çѱ¹¾î
DOI https://doi.org/10.14190/JRCR.2017.5.4.353
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