Early-age behavior of reinforced concrete under restrained conditions

Title: Early-age behavior of reinforced concrete under restrained conditions
Author(s): W. Jiang, Y. Yaun, and G. De Schutter
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 294 - 300
Total Pages: 7
Nb references: 6
Language: English

Abstract: Concrete structures are prone to cracking due to the shrinkage at early-age. Shrinkage cracks can influence the durability of the structure by inducing reinforcement corrosion. Furthermore, cracking can influence the normal use of the concrete, especially for underground structures under water level. A special rigid restrained frame device for axialrestrained shrinkage test is devised by which the degree of restraint can be completely controlled. A multi-signal data collecting system is also designed for measuring the restrained load and deformation of the specimen. Axial-restrained shrinkage tests on both normal concrete and high strength concrete are performed with this system. Reinforced concrete with three different reinforcement ratios (0.5%, 1.13%, and 2.01%) was also tested. Based on the experiments and theoretical analysis, the influence of water cement ratio and percentage of reinforcement on the early-age behavior of reinforced concrete under restrained conditions, such as the development of constrained tensile stress and cracking behavior has been studied.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00

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