Shrinkage Cracking Test and Analytical Model for Concrete Considering Creep Behaviour at Early Age

Yun Feng Li; Yan Yao; Ling Wang

doi:10.4028/www.scientific.net/AMR.33-37.435

Paper Titles

A Study of Creep Properties of Polymer Bonded Explosives
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Analysis of Finite Element Viscoelastic Displacement Based on Kelvin Model
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Experimental and Numerical Study of Cyclic Creep of Cast Magnesium Alloy at High Temperature
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Numerical Back Inversion Method of Compressive Creep Parameters of Rock Masses under Rigid Bearing Plate and its Application
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Shrinkage Cracking Test and Analytical Model for Concrete Considering Creep Behaviour at Early Age
p.435

Numerical Simulation of Void Growth Induced Creep Rupture in HAZ at Elevated Temperature
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Dynamic Behavior of Tungsten Alloys
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Influences of RE-Ti Composite Modification on the Structure and Properties of W6Mo5Cr4V2 Alloy
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Influence of Heat Treatment on Structures and Mechanical Properties of Cast Fe-B-C Alloy
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Shrinkage Cracking Test and Analytical Model for Concrete Considering Creep Behaviour at Early Age

Abstract:

Cracking due to the restrained shrinkage stress has been frequently observed at early age in concrete construction. The early-age shrinkage cracking reduce the structural performance of concrete and may accelerate deterioration to shorten the service life. Two kinds of strategies and instrumentation have been developed to assess early age cracking: ring tests with a restraining core, longitudinal tests where the restraint is at the end grips of the specimen. Early-age concrete exhibits creep or relaxation behavior that is a typical response of viscoelastic materials. Viscoelastic constitutive model should be used to analyze stress development of the restrained concrete. The assessment of the risk of cracking can be based on the model with input of the estimated concrete deformation.