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Title:Role of Aggregate Packing in Segregation Resistance and Flow Behavior of Self -Consolidating Concrete
Author(s):Shen, Lin
Doctoral Committee Chair(s):Leslie Struble
Department / Program:Civil Engineering
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Civil
Abstract:A numerical model based on rheology and mechanics analysis is developed to predict dynamic segregation. The calculated dynamic segregation agrees well with values obtained in the laboratory, using the flow trough, and in the field. It is found that smaller aggregate size, continuous aggregate gradation, lower aggregate density, and higher paste viscosity and yield stress reduce dynamic segregation. Among these factors, aggregate size, gradation, density, and paste rheology have bigger effects than aggregate volume and initial concrete flow velocity. A simple method is introduced to set the maximum flowing distance for SCC mixes based on the flow trough result and mix proportions.
Issue Date:2007
Description:178 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.
Other Identifier(s):(MiAaPQ)AAI3290373
Date Available in IDEALS:2015-09-25
Date Deposited:2007

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