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Fine Aggregates Size Effect on Rheological Behavior of Mortar
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 Title & Authors
Fine Aggregates Size Effect on Rheological Behavior of Mortar
Lee, Jin Hyun; Kim, Jae Hong; Kim, Myeong Kyu;
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 Abstract
Physical characteristics of aggregates affect the workability and strength of mortar and concrete, which include their fineness ratio, particle size distribution and water absorption. The workability of construction materials decreases if the incorporated fine aggregates show improper size distribution of their particles. This study shows the particle size effect on the rheological behavior of mortar and provides basic information for evaluating its workability. A mini-slump flow test was adopted to evaluate the workability of mortar. In addition, its plastic viscosity and yield stress were measured using a rheometer for building materials. The sand samples were prepared by sieving river sand and sorting out with their particle sizes. As a result, it was observed that the fines less than 0.7 mm increases the yield stress and plastic viscosity of the mortar samples. If the fines are less than 0.34 mm, the water absorption of the fines dominates change on the workability.
 Keywords
Aggregate;Concrete;Mortar;Particle Size;Rheology;
 Language
Korean
 Cited by
1.
Correlation between Channel-Flow Test Results and Rheological Properties of Freshly Mixed Mortar, Journal of the Korea Academia-Industrial cooperation Society, 2016, 17, 7, 237  crossref(new windwow)
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