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首页> 外文期刊>Materials and structures >Tensile behaviour identification in Ultra-High Performance Fibre Reinforced Cementitious Composites: indirect tension tests and back analysis of flexural test results
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Tensile behaviour identification in Ultra-High Performance Fibre Reinforced Cementitious Composites: indirect tension tests and back analysis of flexural test results

机译：超高性能纤维增强水泥复合材料中的拉伸行为鉴定：间接张力试验及弯曲试验结果的返回分析

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摘要

Within the framework of the European Programme Horizon 2020, the Research Project ReSHEALience is currently running with the objective of developing a new approach for the design of structures exposed to extremely aggressive environments, based on Durability Assessment based Design and Life Cycle Analysis. To this aim, new advanced Ultra-High Performance Fibre Reinforced Cementitious Composites with improved durability, called Ultra-High Durability Concretes, are under investigation to characterize their tensile response in both ordinary and very aggressive conditions. In this context, the first step is to develop an effective approach for identifying the main parameters describing the overall behaviour in tension. In the present study, indirect tension tests have been performed via two techniques, based on Double Edge Wedge Splitting and 4-Point Bending Tests. Starting from the test results, a combined experimental-numerical identification procedure has been implemented in order to evaluate the effective material behaviour in direct tension in terms of stress-strain law. In the paper, the mechanical characterization for the reference mix is reported so to describe the identification procedure adopted.
机译：在欧洲课程地平线2020的框架内，研究项目重新启动目前正在运行目的，即在基于耐久性评估的设计和生命周期分析，开发暴露于极其侵略性环境的结构的新方法。为此目的，新的先进超高性能纤维增强水泥复合材料，具有改善的耐用性，称为超高耐久性混凝土，正在调查中，以表征其在普通和非常侵略性条件下的拉伸反应。在这种情况下，第一步是开发一种有效的方法，用于识别描述张力中整体行为的主要参数。在本研究中，基于双边缘楔分裂和4点弯曲测试，通过两种技术进行了间接张力测试。从测试结果开始，已经实施了组合的实验 - 数值识别程序，以便在应力 - 应力法方面评估直接张力的有效材料行为。在本文中，报告了参考混合物的机械表征，以描述所采用的识别程序。

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