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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
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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

A program of work involving measurement of moisture transport properties coupled with guarded hot plate thermal conductivity of some typical masonry materials containing different amounts of moisture has been carried out in support of a large European Union investigation involving the thermal performance of masonry walls. The basic property data were required to assist in both the verification of different hot-box methods and in the development and verification of a simple model that could be used to estimate the thermal performance of moist masonry walls with typical moisture contents.

The five materials studied were an aerated concrete, a high-density hollow concrete block, a hollow clay block and two mortars of widely different density. Measurements were carried out by a number of thermal conductivity laboratories in accordance with appropriate ISO and CEN standards on each material in the dry state and conditioned at 23°C/50%RH and 23°C/90%RH. In addition the moisture absorption/desorption and the water vapor permeability were measured for each material.

The results are discussed with respect to their use and value to the overall program and to previous work on masonry materials. In particular the validity of previous relationships for thermal conductivity with density and for the effects of moisture are also discussed.

1.
Hemminger
,
W.
and
Jugel
,
R.
, “
A Guarded Hot Plate Apparatus for Thermal Conductivity Measurement over the Temperature Range -75 to 200 °C
,”
International Journal of Thermophysics
, Vol.
6
, No.
5
,
1985
, pp 483.
2.
Tye
,
R. P.
and
Spinney
S. C.
, “
Thermal Conductivity of Concrete: Measurement Problems and the Effect of Moisture
,” Proceedings of Commission B1 of International Institute of Refrigeration,
Washington DC
,
Institut International du Froid
,
Paris
,
1976
, pp. 119–127.
3.
Corsan
,
J. M.
and
Williams
,
I.
, “
Errors Associated with Imperfect Surfaces in Standard Hot Plate Thermal Conductivity Measurements
,” NPL Report QU57,
02
1980
.
(See also
Williams
,
I.
and
Shawyer
,
R. E.
, NPL Special Report QUS46,
02
1990
).
4.
Valore
,
R. C.
 Jr.
, “
Insulating Concretes
,”
Journal of American Concrete Institute
 0002-8061, Vol.
28
No.
5
,
1956
, pp 509–532.
5.
Valore
,
R. C.
 Jr.
, “
Calculation of U-values of Hollow Concrete Masonry
,”
American Concrete Institute, Concrete International — Design and Construction
,
1980
, pp. 40–63.
6.
Valore
,
R. C.
 Jr.
,
Tuluca
,
A.
and
Caputo
,
A.
, “
Assessment of the Thermal and Physical Properties of Masonry Block Products
,” Report number ORNL/Sub/86-22020/1,
Oak Ridge National Laboratory
,
1986
.
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