Improvement of flexural behavior of reinforced high strength concrete members by reducing autogenous shrinkage

Title: Improvement of flexural behavior of reinforced high strength concrete members by reducing autogenous shrinkage
Author(s): M. Tanimura, Y. Shimoyama, H. Omori, R. Sato
Paper category : conference
Book title: International RILEM Conference on Early Age Cracking in Cementitious Systems
Editor(s): K. Kovler and A. Bentur
Print-ISBN: 2-912143-29-2
e-ISBN: 2351580362
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 343 - 353
Total Pages: 11
Nb references: 10
Language: English

Abstract: In addition to the effect of using expansive additive (EX) and/or shrinkage reducing agent (SRA) on reduction of autogenous shrinkage and shrinkage induced stress of high strength concrete, the mechanical behavior of reinforced concrete members made of high strength concrete containing EX and/or SRA was experimentally investigated. The use of both EX and SRA was particularly effective in reducing autogenous shrinkage and its induced stress. Flexural cracking load of reinforced concrete beam (RC beam) made of high strength concrete using both EX and SRA (NES) was approximately 2.0 times as large as that of conventional high strength concrete (NC). Deflection and average crack width of NES-RC beam were reduced to approximately 60% and 70% of that of NC-RC beam, respectively, when the stress in tension steel bar is 150 MPa, calculated based on the conventional method. These results showed that the flexural behavior of reinforced high strength concrete members could be significantly improved by reducing autogenous shrinkage.

Online publication: 2010-06-02
Publication type : full_text
Public price (Euros): 0.00