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Fig.3.11. Design stress-strain curves with bilinear formation

Fig. 3.12 shows the comparison for the "basic" design stress - strain relations (derived from the mean curve by taking the characteristic value and dividing it by yc = 1.5) and the "simplified" design curves,

Nilson, A., "High Strength Concrete- An Overview of Concrete Research", Proceedings of the Conference Utilisation of High Strength Concrete", Stavanger 1987.

Walraven, J.C., "High Performance Concrete Bridges", a European Perspective", Conference on Developments in Short and Medium Span Bridge Engineering, Calgary, Canada, '98, Proceedings, Part I, pp 1-14.

Walraven, J.C., "Size effects: their nature and their recognition in building codes", STUDI E RICERCHE - Vol. 16, 1995, pp. 113-134.

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