【摘要】 粉煤灰贫混凝土具有优良的路用性能和经济适用性.水泥混凝土路面设计以综合疲劳为依据,因此,研究其疲劳性能对确定适宜的路面设计参数具有重要意义.通过室内贫混凝土小梁的弯曲疲劳试验,采用Weibull模型,得出了3种不同形式的粉煤灰贫混凝土疲劳方程,并利用已有的各种混凝土的疲劳方程和弯拉强度,提出了适用于不同强度混凝土的综合疲劳方程.更多还原

【Abstract】 Lean concrete with fly ash has excellent performance and economic applicability.The cu-rrent concrete pavement design is based on fatigue,therefore it has important significance for determining suitable pavement design parameter to research its fatigue performance.According to fatigue flexural test of lean concrete beam in the laboratory,this article puts forwards three different kinds of fatigue ~equations .Furthermore,utilizing fatigue equations and flexural strength of different kinds of concretes,a comprehensive fatigue equation which is suitable to concretes with different strength is brought forward.更多还原