To control the alignment of prestressed concrete bridge during construction, it is reasonable to treat the prediction of the deflection as an uncertainty. This paper presents a Bayesian updating approach to predict the deflection of prestressed concrete girders. A prior distribution is developed by using Monte Carlo stimulation with a proposed deterministic model under a variety of prestressing...

Some Problems on High Strength Concrete for Prestressing by Kanji YAMAZAKI (Research Laboratory of Nihon Cement Co., Ltd., Tokyo) This paper describes some problems on high strength concrete studied in our laboratory in recent years. Summary of this report is as follows: (1) In order to make high strength concrete for prestressing, it is necessary to lower the water-cement ratio. But, in the ca...

Acoustic emission (AE) is studied to monitor stress corrosion cracking (SCC) of prestressing strands. This nondestructive method seems particularly recommended because it has the capacity to realize a real time and a remote detection of active defects. In this study corrosion mechanisms are generated in an accelerated way. A particular attention has been made on hydrogen embrittlement process b...

The repair of structural elements for the prestressing reinforced concrete is necessary when existing wires are damaged or after a certain period time. objective this paper to describe methodology life assessment corroded wires, sampled from prestressed few decades use. aim presented research was determine real properties wire in terms evaluation remaining load capacity using Theory Critical Di...