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Assessing hydration disturbances from concrete aggregates with radiation shielding properties by isothermal calorimetry

Wadsö, Lars LU ; Cooper-Jensen, Carsten P. LU and Bentley, Phillip M. (2017) In Physical Review Accelerators and Beams 20(4).
Abstract

Spallation sources create a large amount of neutrons with energies up to the GeV range. To shield for these neutrons, steel and concrete are important materials. By adding different aggregates to normal concrete, one can improve the shielding effect of the concrete. Some of these aggregates can influence the rate of hydration (reaction) of the cement or even completely inhibit the hydration. It is thus good practice to start the investigation of new shielding concretes by assessing the rate of cement hydration in the presence of new aggregates. This is preferably made with isothermal (heat conduction) calorimetry. In this paper we describe such tests made with a large number of different potential aggregates for a shielding concrete. We... (More)

Spallation sources create a large amount of neutrons with energies up to the GeV range. To shield for these neutrons, steel and concrete are important materials. By adding different aggregates to normal concrete, one can improve the shielding effect of the concrete. Some of these aggregates can influence the rate of hydration (reaction) of the cement or even completely inhibit the hydration. It is thus good practice to start the investigation of new shielding concretes by assessing the rate of cement hydration in the presence of new aggregates. This is preferably made with isothermal (heat conduction) calorimetry. In this paper we describe such tests made with a large number of different potential aggregates for a shielding concrete. We found a full range of influence on the hydration, from no influence to severely disturbed. In some cases smaller particles gave more disturbance.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Accelerators and Beams
volume
20
issue
4
publisher
American Physical Society
external identifiers
  • scopus:85025130594
  • wos:000400244900003
ISSN
2469-9888
DOI
10.1103/PhysRevAccelBeams.20.043502
language
English
LU publication?
yes
id
bad3be7b-60af-429f-b1ed-558a8e458ec0
date added to LUP
2017-07-31 12:56:42
date last changed
2018-01-07 12:13:46
@article{bad3be7b-60af-429f-b1ed-558a8e458ec0,
  abstract     = {<p>Spallation sources create a large amount of neutrons with energies up to the GeV range. To shield for these neutrons, steel and concrete are important materials. By adding different aggregates to normal concrete, one can improve the shielding effect of the concrete. Some of these aggregates can influence the rate of hydration (reaction) of the cement or even completely inhibit the hydration. It is thus good practice to start the investigation of new shielding concretes by assessing the rate of cement hydration in the presence of new aggregates. This is preferably made with isothermal (heat conduction) calorimetry. In this paper we describe such tests made with a large number of different potential aggregates for a shielding concrete. We found a full range of influence on the hydration, from no influence to severely disturbed. In some cases smaller particles gave more disturbance.</p>},
  articleno    = {043502},
  author       = {Wadsö, Lars and Cooper-Jensen, Carsten P. and Bentley, Phillip M.},
  issn         = {2469-9888},
  language     = {eng},
  month        = {04},
  number       = {4},
  publisher    = {American Physical Society},
  series       = {Physical Review Accelerators and Beams},
  title        = {Assessing hydration disturbances from concrete aggregates with radiation shielding properties by isothermal calorimetry},
  url          = {http://dx.doi.org/10.1103/PhysRevAccelBeams.20.043502},
  volume       = {20},
  year         = {2017},
}