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ASTM Selected Technical Papers
Insulation Materials: Testing and Applications: 4th Volume
By
AO Desjarlais
AO Desjarlais
1
Oak Ridge National Laboratory
?
Oak Ridge, TN
Search for other works by this author on:
RR Zarr
RR Zarr
2
National Institute of Standards and Technology
?
Gaithersburg, MD
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ISBN-10:
0-8031-2898-3
ISBN:
978-0-8031-2898-9
No. of Pages:
427
Publisher:
ASTM International
Publication date:
2002

This paper presents a proposal for a standardized method for creep tests and techniques for predicting densities necessary to prevent settling of loose-fill insulation in walls. Experimental techniques and a theoretical framework needed for determining the associated creep parameters are described.

The theoretical framework allows a quantitative approach to the problem of achieving non-settling of a loose-fill insulation material in a given wall.

The theory leads to a set of equations to estimate stresses in a loose-fill insulation material as a function of the geometry of the wall, material parameters for the loose-fill insulation material and friction coefficients between the wall and the loose-fill. A theoretical description of creep and a technique that allows the determination of the relevant material parameters from the proposed creep tests is shown together with the test results. Furthermore, the necessary loose-fill density for long-term stability in a wall exposed to varying relative humidity is predicted.

1.
Rasmussen
,
T. V.
,
“Sætningsfri indblæsning af løsfyldsisolering i vægge,” (Settling of loose-fill insulation materials in walls; in Danish, summary in English)
, By og Byg Dokumentation 011,
Danish Building and Urban Research
,
Hørsholm, Denmark
,
2001
.
2.
Rasmussen
T. V.
, “
Modelling Settling of Loose-fill Insulation in Walls, Part I
,”
Journal of Thermal Envelope & Building Science
, Vol.
25
, No.
2
, October, 2001.
3.
Andersen
,
T.
,
Fynholm
,
P.
,
Hansen
,
M. H.
, and
Nicolajsen
,
A.
,
“Fugtsikre traefacader — Fugtindhold i højisolerede træfacader,” (Moisture content in highly insulated wood frame walls; in Danish)
, By og Byg Dokumentation 025,
Danish Building and Urban Research
,
Hørsholm, Denmark
,
2002
.
4.
Nielsen
A.
, “
Rheology of Building Materials
,”
National Swedish Building Research
,
Stockholm, Sweden
,
1972
.
5.
Burgers
J. M.
, “
Mechanical Considerations, Model Systems, Phenomenological Theories, in Akademie van Wetenschappen, First Report on Viscosity and Plasticity
,” Amsterdam, Holland,
1935
, pp. 21–33.
6.
Clouser
W. S.
, “
Creep of Small Wood Beams under Constant Bending Load
,” U.S. Forest Products Lab. Report 2150, Washington D.C., USA,
1959
.
7.
Flügge
,
W.
, “
Viscoelasticity
,”
Blaisdell Publishing Company
,
London
,
1967
.
8.
Nielsen
,
L. F.
, “
Rheologische Eigenshaften für isotrope linear-viskoelastische Kompositmaterialien
.”
Cement and Concrete Research
 0008-8846 
3
,
1973
, pp. 751.
9.
Wesche
,
K.
, “
Baustoffe für tragende Bauteile 1
,”
Bauverlag GMBH
,
Wiesbaden und Berlin, Germany
,
1977
, pp. 68–84.
10.
Nielsen
,
L. F.
,
“Materialemekanik grundkursus II i bygningsmaterialer,” (Materials mechanics; in Danish)
, Technical Report 169/86,
Building Materials Laboratory, Technical University of Denmark
,
1986
.
11.
Nielsen
,
L. F.
,
“Materialemekanik,” (Materials mechanics; in Danish)
, Technical Report 286/1993, ISSN 0908-3871,
Building Materials Laboratory, Technical University of Denmark
,
1993
.
12.
Wenzel
,
F.
, “
Unterschungen über die Druckverhältnisse in Silozellen
,” Diss.
TU Braunschweig
,
1962
.
13.
Hartlen
,
J.
, “The strength parameters of grain, European Symposium on Particle Technology,” 3–5 June,
Amsterdam
,
1980
, pp. 9.
14.
Munch-Andersen
,
J.
and
Nielsen
,
J.
, “
Pressures in slender grain silos
,”
CHISA
1990
, Second European Symposium on Stress and Strain in Particulate Solids,
Prague
, 26–31 August, 1990, pp. 9.
15.
Hartlen
,
J.
;
Nielsen
,
J.
;
Ljunggren
,
L.
;
Martensson
,
G.
and
Wigram
,
S.
The wall Pressure in large Grain Silos
,”
Swedish Council for Building Research
,
Stockholm
, Document D2:1984,
1984
.
16.
Barfod
,
N.
,
“En introduktion til partikelteknologi,” (An introduction to particle technology; in Danish)
,
Department of Chemical Engineering, Technical University of Denmark
,
1982
.
17.
Rasmussen
T. V.
, “
Modelling Settling of Loose-fill Insulation in Walls, Part II, Determination of Coefficients
,” accepted for publication in
Journal of Thermal Envelope & Building Science
,
2002
.
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