Abstract
Mortar specimens cured at various conditions were first subjected to bending repeated loads, and it was made clear that insufficient cure reduced fatigue resistance of them. Next, fatigue tests that the stress levels are lower than the ones of fatigue rupture were carried out, and the improved scale based on the Gompertz curve was proposed for expressing fatigue of specimens. The effect of curing conditions in early age on carbonation was furthermore studied using the scale, and it was made clear that insufficient cure is also susceptible to their carbonation. Finally, the reason for rapid carbonation of fatigued mortars insufficiently cured was discussed from the view point of changes in pore structure of them.
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