ASSESSMENT OF SPALLING RISKS FROM GRADUALLY EXPANDING STEEL BAR IN CONCRETE
This paper describes experiments simulating the effect of reinforcement corrosionat the bottom comer of a reinforced concrete beam on spalling risks. Moreover,an analyticalapproach is presented for estimating characteristic stages in the damage evolution process inthe cover layer. Order of magnitude of these analytical predictions was found in agreementwith experimental values. Plain and steel fiber reinforced mortar and concrete specimens weretested. Fibers were found to delay the occurrence of major crack formation. Moreover,alimited number of specimens covered with a 5mm thick monofilament polypropylene fiber-reinforced mortar layer were tested. Such layers also reduce spalling risks. Tests wereadditionally analyzed by FE approach of which results supported the experimental findings.
Analytical solution bar expansion concrete corrosion cracking experiments
P. Stroeven A.T. Mozcko
Faculty of Civil Engineering and Geosciences,Delft University of Technology,The Netherlands Faculty of Civil Engineering,Wroclaw University of Technology,Poland
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
831-836
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）