This paper discusses applying a two-parameter “residual strength” phenomenological model to plain concrete. The model accounts for the concrete strength's stochastic nature and relates it to fatigue life scatter through the Strength-Life Equal-Rank Assumption (SLERA). Checked on a series of literature data, the model allows recovering the static strength statistical distribution from the fatigue data inherently accounting for the stress ratio and loading rate. It is shown that the model's and the Weibull static strength's parameters represent the fingerprint for a given materials category. Its predictive capabilities indicate that the model's physical prerogatives deserve to be considered in the world of concrete.

本文讨论了将双参数“残余强度”现象学模型应用于素混凝土。该模型考虑了混凝土强度的随机性，并通过强度-寿命等阶假设 (SLERA) 将其与疲劳寿命分散相关联。检查一系列文献数据，该模型允许从疲劳数据中恢复静态强度统计分布，固有地考虑应力比和加载速率。结果表明，模型和威布尔静态强度的参数代表了给定材料类别的指纹。其预测能力表明，该模型的物理特权值得在混凝土领域加以考虑。