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JACKETING OF EXISTING PIERS: EVALUATION OF THE RISK OF CRACKING DUE TO HYDRATION HEAT WHEN DIFFERENT TYPES OF APPLICATION TECHNIQUES ARE USED



Author(s): F. Macobatti, C. Zanotti, A. Meda, G. Plizzari
Book Title: Seventh International RILEM Conference on High Performance Fiber Reinforced Cement Composites (HPFRCC7)
Editor: H.W. Reinhardt, G.J. Parra-Montesinos, H. Garrecht
ISBN: 978-2-35158-145-2
e-ISBN: 978-2-35158-146-9
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 465-472
Total Pages: 8
Language: English


Abstract: Early-age thermal cracking is a typical problem in concrete repairs and is affected by several factors, including material properties, structural restraints, adjacent elements, environmental conditions, and construction technologies. A typical retrofitting solution for concrete columns is represented by the application of a new jacket of cementitious material. Yet, the effectiveness of such technique can be jeopardized by early-age cracks. A numerical study on the risk of early-age thermal cracking in a bridge pier column retrofitted with Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is presented in this paper. Nonlinear coupled heat transfer-flow stress analysis is performed and the effects of different materials and application techniques, including pouring the repair in wooden or steel formworks or shotcreting the repair without using any mold, are compared and discussed.


Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00