Fire resistance of structural members is dependent on the thermal and mechanical properties of constituent materials and these properties vary as a function of temperature. Currently, there are limited standardized test procedures for evaluating thermal and mechanical properties of construction materials at elevated temperatures. This paper provides a review and assessment of test methods and procedures for evaluating high temperature thermal and mechanical properties of concrete. The drawbacks and variations in currently available test procedures and methods in standards are discussed. Recommendations on the most suitable methods and procedures for measuring thermal and mechanical properties at elevated temperature is presented. In addition, applicability of the proposed high temperature test methods and procedures is illustrated through a case study on conventional concrete specimens. Further, the need for developing standards by organizations such as American Society for Testing and Materials (ASTM), with standardized specifications and test procedures for measuring high temperature properties of construction materials, is laid out.

中文翻译：

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高温下表征混凝土性能的试验方法

结构构件的耐火性取决于组成材料的热和机械性能，并且这些性能随温度而变化。当前，用于评估建筑材料在高温下的热和机械性能的标准化测试程序有限。本文对评估混凝土高温热和机械性能的测试方法和程序进行了回顾和评估。讨论了标准中当前可用的测试程序和方法的缺点和变化。提出了有关在高温下测量热和机械性能的最合适方法和程序的建议。此外，通过对常规混凝土试样进行案例研究，说明了所提出的高温测试方法和程序的适用性。此外，提出了对诸如美国测试和材料协会（ASTM）之类的组织制定标准的需求，该标准具有用于测量建筑材料的高温特性的标准化规范和测试程序。