Issue 60

A. Taibi et alii, Frattura ed Integrità Strutturale, 60 (2022) 416-437; DOI: 10.3221/IGF-ESIS.60.29

With Early Age

Without Early Age

No initial stresses

yy 

Stress

No Damage

Damage

Crack Openings No Crack Openings Figure 8: Stress, damage and crack openings due to early age hydration without cooling.

G LOBAL AND LOCAL BEHAVIOURS UNDER TENSILE LOADING o study the mechanical analysis of the consequences brought by the hydration initial state, the behaviour of the (20×20) cm² s ample is simulated under tensile loading. Fig. 9 shows stress-displacement evolution of early age concrete and concrete without early age under traction. Concrete with initial state shows a premature non-linear behaviour due to the existence of initial stresses (The elastic phase in not linear). Regarding the peak strength, the two T

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