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Dimensional stability of materials based on Portland cement at the early stages

机译:早期基于波特兰水泥的材料的尺寸稳定性

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In this work two fiber optic sensing techniques are used to study the dimensional stability in fresh state of different cementitious materials. A conventional Portland cement mortar and two commercial grouts were selected. The measurements were performed by using a Bragg grating embedded in the material and a non-contact Fizeau interferometer. The first technique was applied in a horizontal sample scheme, and the second one, by using a vertical configuration. In addition, a mechanical length comparator was used in the first case in order to compare the results. The evolution with time of the dimensional changes of the samples and the analysis of the observed behavior are included.
机译:在这项工作中,使用了两种光纤传感技术来研究不同胶结材料在新鲜状态下的尺寸稳定性。选择了常规的波特兰水泥砂浆和两个商业灌浆。通过使用嵌入材料中的布拉格光栅和非接触式Fizeau干涉仪进行测量。第一种技术是在水平样本方案中应用的,第二种是通过使用垂直配置应用的。此外,在第一种情况下使用了机械长度比较器,以便比较结果。包括样品尺寸变化的随时间变化和观察到的行为分析。

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