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首页> 外文期刊>Materials and structures >Mechanical behavior model for ASR-affected dam concrete under service load: formulation and verification
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Mechanical behavior model for ASR-affected dam concrete under service load: formulation and verification

机译：ASR影响的大坝混凝土在服务荷载下的力学行为模型：公式和验证

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摘要

In this paper, a mechanical behavior model for concrete undergoing Alkali-Silica Reaction (ASR) expansions is presented. The relation between evolution of expansions and external pressure is specifically taken into account in the model, including a procedure to calculate inhibition pressure (defined as the com-pressive stress threshold beyond which no expansion can take place) from experimental data. Creep is represented by means of an eight element ageing Maxwell chain based on the shape proposed in the B3 model. An application of the model is provided for a case study using experimental data. Verification of the model is performed against data from the same batch of tests different from those used for calibration.
机译：本文提出了一种碱-硅石反应（ASR）膨胀混凝土的力学行为模型。该模型中特别考虑了膨胀的演变与外部压力之间的关系，包括从实验数据计算抑制压力（定义为压应力阈值，超过该阈值将不会发生膨胀）的过程。基于B3模型中提出的形状，通过八元素老化的麦克斯韦链表示蠕变。使用实验数据为案例研究提供了该模型的应用。针对来自同一批测试的数据（不同于用于校准的数据）执行模型验证。

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