CAN/CSA-S originally consisted of pages (x preliminary and text), each dated. May It now consists of the following pages. 1 Scope. General This Standard. CAN/CSA-A/A Concrete Materials and Methods of Concrete .. CAN/CSA-C (R) Performance Standard for Dusk-to-Dawn Luminaires .. Canadian Standards Association > Standards > CAN/CSA-S 12 – Design. Preface This is the second edition of CSA S, Design and construction of building structures with fibre-reinforced polymers. It supersedes the first edition.
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Microstructural analysis shows that the increase in creep strain, after the hour period, is negligible for GFRP bars under allowable service load. Phase 1 deals with the cxa performance of two types of GFRP bars subjected to different levels of sustained axial load; causing creep rupture at higher levels.
CAN/CSA-S (R) | Standards Council of Canada – Conseil canadien des normes
The long-term to immediate deflection ratio. These predictions showed that both models can serve as upper bound and lower bound limits for the measured long-term deflection curves, respectively.
Satisfactory results were found when the k b bond-coefficient factor is taken as 1. Immediate crack width results were compared to the prediction equations adopted by ACI Show full document record.
For both equations the time-dependent kt multiplier is deduced as 1.
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Author s Youssef, Tarik A. The theoretical curves were in very good agreement with the measured values. In Phase 2, six different types of GFRP bars are tested under two levels of allowable service load, according to the currently available North American standards.
Numerical modelling took place using a computer program Fortran based on the age-adjusted effective modulus method, to predict the long-term deflection of the beams. Results showed that the North American standards are conservative as regards long-term deflection prediction. Phase 4 deals with four full-scale GFRP reinforced concrete beams, of dimensions mm x mm x mmsubjected to uniform distributed load for a period of six months.
As regards crack width prediction, the equations adopted by ACI Residual tensile tests and microstructural analysis followed the long-term testing period.
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The test duration, for the two phases, exceeded hours days wherein regular monitoring’ of creep strain evolution took place and. The dimensions of which are mm x mm x mm, installed under third-point sustained load, for a period exceeding one year.
The program, consisting of four phases, studies the creep performance of FRP bars as well as the overall long-term behaviour of FRP reinforced concrete beams.