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Hydration and drying of Nirex Reference Vault Backfill

机译：Nirex Reference Vault回填的水化和干燥

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摘要

The short-term hydration and drying response of Nirex Reference Vault Backfill (NRVB) grout is presented. Low-frequency electrical conductance measurements were used in conjunction with gravimetric and internal temperature measurements to study NRVB grout from initial mixing up to 7 days hydration. The grout was subjected to ambient temperatures of 25℃, 55℃ and 70℃ at relative humidities of 50-55% and 85-90%. By taking measurements at discrete depths from the exposed surface, the influence of the external environment on setting and hardening and drying effects could be studied. An empirical relationship, based on a simplified electrical model, was established between moisture loss and electrical measurements.
机译：介绍了Nirex Reference Vault回填（NRVB）灌浆的短期水合作用和干燥响应。将低频电导率测量值与重量和内部温度测量值结合使用，以研究从初始混合直至水化7天的NRVB灌浆。灌浆在相对湿度为50-55％和85-90％的条件下分别经受25℃，55℃和70℃的环境温度。通过在距裸露表面不连续的深度进行测量，可以研究外部环境对凝固，硬化和干燥效果的影响。在水分损失和电气测量之间建立了基于简化电气模型的经验关系。

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