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首页> 外文会议>6th International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials, (PTEBM'03) Pt.1 Apr 14-16, 2003 Zurich, Switzerland >EVALUATION OF THE INDIRECT TENSILE STIFFNESS MODULUS TEST
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EVALUATION OF THE INDIRECT TENSILE STIFFNESS MODULUS TEST

机译：间接拉伸刚度模量试验的评估

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摘要

In view to enhance its experience in the field of characterization of asphalt mixes and to develop new test methods, RTE (the central laboratory of SCREG) has acquired a universal testing machine designed to conduct indirect tensile stiffness modulus testing. The interest of this technique is that it is time-saving compared to complex modulus and direct tension modulus tests. It also makes it possible to use both moulded or cored samples ( cored samples are actually easier to make). It also facilitates the monitoring of work on site, because it is possible to measure the modulus directly on cores taken in situ from the pavement. Nevertheless, in spite of the standards' guidelines, there are still many ways to carry out the test using different loading signals and specimen sizes. It is also important to establish a possible correlation with other commonly used tests in France. We have studied a possible correlation with direct tension modulus measurement using the MAER (servo-controlled machine for rheological tests). A comparison has also been made between two completely different methods of modulus measurement in light of the fact that direct tension leads to a fairly homogenous stress distribution in samples, and does not require previous knowledge of Poisson's ratio. This article presents the first results obtained, mainly regarding hot mixes, but also cold mixes.
机译：为了增强其在沥青混合料表征领域中的经验并开发新的测试方法，RTE（SCREG的中央实验室）已购买了一种通用测试机，旨在进行间接拉伸刚度模量测试。与复数模量和直接拉伸模量测试相比，此技术的好处在于节省时间。它还可以使用模制样品或带芯样品（带芯样品实际上更易于制造）。由于可以直接在从人行道现场取下的型芯上测量模量，因此它也便于现场工作的监测。尽管如此，尽管有标准指南，仍然有许多方法可以使用不同的加载信号和样本大小进行测试。建立与法国其他常用测试的可能关联也很重要。我们研究了使用MAER（流变试验的伺服控制机器）与直接拉伸模量测量的可能相关性。考虑到直接拉伸会导致样品中应力分布相当均匀这一事实，并且不需要先有泊松比的知识，就可以对两种完全不同的模量测量方法进行比较。本文介绍了获得的第一个结果，主要涉及热混合，但也涉及冷混合。

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