Experimental and theoretical investigation of the shear resistance of steel fibre reinforced prestressed concrete X-beams - Part II: Theoretical analysis and comparison with experiments

Title: Experimental and theoretical investigation of the shear resistance of steel fibre reinforced prestressed concrete X-beams - Part II: Theoretical analysis and comparison with experiments
Author(s): K. S. Elliott, C. H. Peaston, K. A. Paine
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 35
Issue: 253
Issue date: 2002-11-01
Publication year: 2002
Pages: 528 - 535
Total Pages: 8
Nb references: 28
Language: English

Abstract: In structural elements consisting of concretes of different ages,physical and chemical deformations induced by heat release and autogenous shrinkage during the hydration of new concrete are restrained by the old concrete.
Depending on the amplitude of these deformations and on the degree of restraint of the hybrid element,full-depth cracks can be induced in the new concrete layer at an early age.
An experimental investigation on four hybrid elements was conducted to study this early age behaviour.
The temperature evolution and global strains (measured using optical fiber sensors)during hydration are presented.
Comparison of the experimental results with a numerical model shows that autogenous shrinkage has the most important influence on the evolution of the strains and internal stresses in the tested hybrid elements at early age.

Online publication: 2002-09-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13809