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  Journal Paper


Paper Title :
Influence of Silica Fume on the Rheological Properties and Autogenous Shrinkage of UHPC Paste

Author :Caglar Yalcinkaya, Halit Yazici

Article Citation :Caglar Yalcinkaya ,Halit Yazici , (2017 ) " Influence of Silica Fume on the Rheological Properties and Autogenous Shrinkage of UHPC Paste " , International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) , pp. 39-43, Volume-4,Issue-1

Abstract : High amount of cementitious material and low water/binder (W/B) ratio increase shrinkage strain which also increases the crack formation risk of ultra-high performance concrete (UHPC). The effects of silica fume replacement ratio on the rheological properties and autogenous shrinkage of UHPC paste were investigated in this study. Four pastes with a very low W/B ratio (0.20) were produced. Besides the rheometer with a ball measuring system, mini slump-flow and V-funnel tests were applied to determine rheological properties. Moreover, autogenous shrinkage was measured by using a laser system at early-age, whereas a mechanical comparator was used for long-term measurements. As a result, the pastes which have SF up to 20% showed dilatant behavior. It was found that early-age shrinkage is much higher than long-term shrinkage. Both early-age and total autogenous deformation was increased as a result of SF replacement. The long-term and total deformations were significantly increased as a result of increasing SF replacement from 20% to 30%. Index Terms- Rheology, Shrinkage, Silica Fume, UHPC.

Type : Research paper

Published : Volume-4,Issue-1


DOIONLINE NO - IJAMCE-IRAJ-DOIONLINE-6908   View Here

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