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Reliability of standard methods for evaluating the early-age cracking risk of thermal-shrinkage origin in concrete walls

机译：用于评估混凝土墙热收缩起因的早期开裂风险的标准方法的可靠性

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The paper is focused on the reliability of existing guidelines for both the design and evaluation of early-age cracking risk in concrete structures. The study considers the recommendations for reinforced concrete tank walls and bridge abutments, which are especially prone to early-age cracking. A thorough review and discussion of the American, European and Japanese guidelines are supplemented by the analytical procedure for simple evaluation of thermal loads and more precisely considering shrinkage strains. The results obtained using the guidelines were compared with actual observations of crack width in tank walls and bridge abutments. An example of using standards in wall design is also presented. Finally, the usefulness of the presented methods is highlighted with suggestions for a possible path for considering early-age thermal and shrinkage effects in reinforced concrete wall structures. (C) 2019 Elsevier Ltd. All rights reserved.
机译：本文的重点是用于设计和评估混凝土结构早期裂缝风险的现有准则的可靠性。该研究考虑了钢筋混凝土罐壁和桥台的建议，这些建议特别容易出现早期裂缝。分析程序补充了对美国，欧洲和日本准则的全面回顾和讨论，以简化热负荷的评估，并更精确地考虑收缩应变。使用指南获得的结果与罐壁和桥台裂缝宽度的实际观察结果进行了比较。还提供了在墙体设计中使用标准的示例。最后，通过对钢筋混凝土墙体结构中考虑早期热和收缩效应的可能途径的建议，突出了所提出方法的实用性。 （C）2019 Elsevier Ltd.保留所有权利。

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