Influence of Alkali Silica Reaction on Fatigue Resistance of Rc Bridge Deck

Computational Life Assessment of ASR-damaged RC Decks by Site-Inspection Data Assimilation

“…Though the live load deflection at the first cycle in the ASR case is larger than no-ASR, the fatigue life is one-order (10 times) longer than that of non-ASR. It was mentioned that chemical pre-stress can partly restrain the increase in the deflection of live loads (Maeshima et al 2016). Here interestingly, the effect of water is not so significant for the ASR cases when we compare the results of R-d and R-w, although it is known that the existence of water generally reduces fatigue life dramatically in the no-ASR concrete cases (Matsui 1987;Hiratsuka and Maekawa 2015).…”

“…Just after 100 million equivalent cycles, the R-d specimen reached to the fatigue limit. According to the experimental results, 1.63 mm in live load deflection can be regarded as the fatigue limit of R-d specimen (Maeshima et al 2016). These crack location, orientation and their width on the surface will be used for data assimilation of remaining life assessment in this paper (see Chapter 5).…”

“…However, full information about individual bridge has been rarely recorded for ASR deteriorated structures, and the initial quality and used materials of constructed concrete on which the scientific discussion can be based is generally unknown nor unrecorded in practice. Then, the fatigue loading experiments of high quality and reliability with real scale specimens by Maeshima et al (2016) are referred for verification and validation processes of the proposed model in this study. Maeshima et al (2016) conducted experimental studies on the fatigue life of RC slabs, as shown in Fig.…”

“…Then, the fatigue loading experiments of high quality and reliability with real scale specimens by Maeshima et al (2016) are referred for verification and validation processes of the proposed model in this study. Maeshima et al (2016) conducted experimental studies on the fatigue life of RC slabs, as shown in Fig. 1.…”

“…One is rapid acceleration and the specimen is stored in the environmental control room which are kept 50 ºC and RH 80% and its top surface is kept covered by saturated sodium chloride solution ( Fig. 1 Overview of wheel type loading (Maeshima et al 2016). …”