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首页> 外文会议>RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT) >UNIAXIAL TENSILE TEST ON A NEW CEMENT COMPOSITE HAVING A HARDENING BEHAVIOUR
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UNIAXIAL TENSILE TEST ON A NEW CEMENT COMPOSITE HAVING A HARDENING BEHAVIOUR

机译：具有硬化性能的新型水泥复合材料的单轴拉伸试验

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摘要

The LCPC patented a new cement composite (CEMTEC_(multiscale)~®), which have been developed to be stress hardening in tension and to have an ultra-high tensile strength. It is a multi-scale cement composite. One of the industrial applications aimed is related to thin slabs. Consequently, the research objective is to characterize the tensile behaviour of this material used in a thin bended slab. To achieve that, this tensile behaviour is measured from a bending test (easier to perform than an uniaxial tensile test) by an inverse approach. In order to validate the pertinence of this inverse approach, it is necessary to compare its results with those given by an uniaxial tensile test. So, an uniaxial test has been developed especially with this objective. This development has been done by using finite element analysis to determine the test specimen dimensions and the test set-up. The specimen retained is a dog bone specimen with 75 cm overall length. This paper presents in details the different steps which have permitted to conceive this uniaxial tensile test, and some experimental results obtained with it. These results confirms without ambiguity that this material is stress hardening in tension, very ductile, and has a uniaxial tensile strength of about 20 MPa.
机译：LCPC获得了一种新型水泥复合材料（CEMTEC_（multiscale）〜®）的专利，该复合材料的开发目的是在拉伸过程中进行应力硬化，并具有超高的拉伸强度。它是一种多尺度水泥复合材料。目标工业应用之一涉及薄板。因此，研究目的是表征这种材料在薄弯板中的拉伸性能。为此，通过反向方法从弯曲测试（比单轴拉伸测试更容易执行）测量该拉伸行为。为了验证这种反向方法的适用性，有必要将其结果与单轴拉伸试验给出的结果进行比较。因此，特别为此目的开发了单轴测试。通过使用有限元分析来确定测试样品的尺寸和测试设置，可以完成此开发。保留的标本是狗骨头标本，全长75厘米。本文详细介绍了允许进行此单轴拉伸试验的不同步骤，以及由此获得的一些实验结果。这些结果毫无疑问地证实了该材料在拉伸中的应力硬化，非常易延展并且具有约20MPa的单轴拉伸强度。

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