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ASTM Selected Technical Papers
Durability of Building Materials and Components
By
PJ Sereda
PJ Sereda
1Division of Building Research,
National Research Council of Canada
,
Ottawa,
Canada
;
editors
.
Search for other works by this author on:
GG Litvan
GG Litvan
1Division of Building Research,
National Research Council of Canada
,
Ottawa,
Canada
;
editors
.
Search for other works by this author on:
ISBN-10:
0-8031-0325-5
ISBN:
978-0-8031-0325-2
No. of Pages:
1047
Publisher:
ASTM International
Publication date:
1980

It is shown that creep velocity is proportional to that part of swelling or shrinkage which is caused by a change in particle distance. To prove this it has been outlined first that shrinkage and swelling are caused by two mechanisms: (1) expansion or contraction of gel particles due to a change in surface energy, and (2) an expansion or contraction of the whole structure, that is, a change in particle distance. Both effects can be distinguished from one another, because they are dominant in the respective region of water vapor pressure. Finally, creep velocity is also dependent on the water content. It is raised in the upper water vapor pressure region where particle distances are enlarged too. The theoretical explanation is made by adopting the “Munich Model” for describing hardened cement paste.

1.
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,
F. H.
,
Schriftenreihe DAfStb
, No.
290
,
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2.
Setzer
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,
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, No.
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,
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3.
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,
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,
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, Vol.
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,
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4.
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,
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in
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,
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5.
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,
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,
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, Vol.
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,
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6.
Bazant
,
Z. P.
,
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,
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7.
Bazant
,
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,
Nuclear Engineering Design
, Vol.
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,
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Feldman
,
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and
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,
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, Vol.
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,
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Feldman
,
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, 5th International Symposium on the Chemistry of Cement,
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, Vol.
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,
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,
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,
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,
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, and
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,
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11.
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,
R.
and
Diamond
,
M.
, 6th International Congress on the Chemistry of Cement,
Moscow
,
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.
12.
Wittmann
,
F. H.
,
State Institute of Technical Research
, Rep. Series 2, Vol.
167
, Finland,
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.
13.
Setzer
,
M. J.
, “
Surface Energy and Mechanical Behavior of Hardened Cement Paste
,” thesis,
Technical University of Munich
,
1972
.
14.
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,
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and
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,
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,
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 0039-6028, Vol.
41
,
1974
, p. 504.
15.
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,
M. J.
and
Whittman
,
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,
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 0340-3793, Vol.
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,
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16.
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,
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and
Wittmann
,
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,
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,
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.
17.
Setzer
,
M. J.
,
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, Nos.
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,
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, p. 29.
18.
Feldman
,
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,
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 0008-8846, Vol.
2
,
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, p. 521.
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,
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in
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,
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and
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,
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,
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,
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in
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,
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, Vol.
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,
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22.
Setzer
,
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and
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,
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in
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, International Symposium on Pore Structure and Properties of Materials, Vol.
4
,
RILEM/IUPAC
,
Prague
,
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, p. C-69.
23.
Setzer
,
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in
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, International Symposium on Pore Structure and Properties of Materials, Vol.
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,
RILEM/IUPAC
,
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,
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, p. D329.
24.
Niklas
,
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,
Zangew. Physki
, Vol.
6
,
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, p. 470.
25.
Wittmann
,
F. H.
and
Setzer
,
M. J.
,
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 0008-8846, Vol.
1
,
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, p. 679.
26.
Shank
,
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, Bulletin No. 91,
Ohio State University
,
Engineering Experimental Station
,
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.
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