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Hydration and drying of Nirex Reference Vault Backfill

McCarter, W.J. / Crossland, I. / Chrisp, T.M.

AbstractThe 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°C, 55°C and 70°C 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.

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Hydration and drying of Nirex Reference Vault Backfill

McCarter, W.J. / Crossland, I. / Chrisp, T.M.

AbstractThe 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°C, 55°C and 70°C 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.

Hydration and drying of Nirex Reference Vault Backfill

McCarter, W.J. / Crossland, I. / Chrisp, T.M.

AbstractThe 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°C, 55°C and 70°C 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.

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Title:

Hydration and drying of Nirex Reference Vault Backfill

Contributors:

McCarter, W.J. (author) / Crossland, I. (author) / Chrisp, T.M. (author)

Published in:

Building and Environment ; 39 ; 211-221

Publication date:

2003-08-16

Size:

11 pages

ISSN:

DOI:

https://doi.org/10.1016/j.buildenv.2003.08.010

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Cement , Hydration , Drying , Monitoring , Conductance

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