Abstract

Earlier studies have shown that the repeatability of Marshall stability, flow, and air voids content measurements on 6-in. (152.4-mm) diameter specimens of large stone mixes is better than the repeatability on 4-in. (101.6-mm) diameter specimens. A round robin study involving twelve participating laboratories was conducted to provide information for developing a precision statement for the ASTM Test Method for Resistance to Plastic Flow of Bituminous Mixtures Using Marshall Apparatus (6 inch-Diameter Specimen) (D 5581). Difference two-sigma (d2s) limits were developed to determine acceptable single and multilaboratory differences for bulk specific gravity, percent voids, Marshall stability, and Marshall flow measurements. Analysis of other data collected during the study indicated that stability and flow measurements are not sensitive to minor differences in various 6-in. (152.4-mm) diameter breaking heads currently in use.

Issue Section:
Research Papers
Keywords:
large stone mixes, Marshall stability, Marshall flow, percent voids, precision statement

References

1.
Kandhal
,
P. S.
 and
Koehler
,
W. S.
, “
Marshall Mix Design Method: Current Practices
,”
Proceedings, Association of Asphalt Paving Technologists
, Vol.
54
,
1985
.
2.
Acott
,
M.
, “
The Design of Hot Mix Asphalt for Heavy Duty Pavements
,” QIS 111/86,
National Asphalt Pavement Association
,
10
1987
.
3.
“
Superior Performance Pavement-SUPERPAVE™, The Product of the SHRP Asphalt Research Program
,”
Strategic Highway Research Program
,
National Research Council
,
03
1993
.
4.
Hafez
,
I. H.
 and
Witczak
, “
Comparison of Marshall and SUPERPAVE™ Level I Mix Design for Asphalt Mixes
,” paper prepared for presentation at
74th Annual Meeting of Transportation Research Board
,
1995
.
5.
“
Comparison of 4 and 6-in. Diameter Molded Specimens
,”
Pennsylvania Department of Transportation. Bureau of Materials, Testing and Research
, Status Report,
21
02
1969
.
6.
Kandhal
,
P. S.
, “
Large Stone Asphalt Mixes: Design and Construction
,”
Journal of the Association of Asphalt Paving Technologists
, Vol.
59
,
1990
.
7.
Kandhal
,
P. S.
 and
Brown
,
E. R.
, “
Comparative Evaluation of 4-Inch and 6-Inch Diameter Specimens for Testing Large Stone Asphalt Mixes
,” in
Proceedings of the First Materials Engineering Congress
, Vol.
1
,
American Society of Civil Engineers
,
1990
.
8.
Beaudoin
,
M.
,
Langlois
,
P.
, and
Proteau
,
D.
, “
Programme d'Echange Canadien 1991–1992 sur les Enrobés Bitumineux
,”
Canadian Technical Asphalt Association Proceedings
, Vol.
XXXVII
,
1992
.
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