ASTM D4074-91(1996)e1
(Test Method)Standard Test Method for Bitumen and Aggregate Content of Bitumen-Aggregate Mixtures From Roofing Samples
Standard Test Method for Bitumen and Aggregate Content of Bitumen-Aggregate Mixtures From Roofing Samples
SCOPE
1.1 This test method covers the determination of the bitumen content of adhered aggregate surfacing on a roof, and the approximate mass per unit area of the flood coat and adhered aggregate.
1.2 The values stated in inch-pound units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability and regulatory limitations prior to use.
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e1
Designation: D 4074 – 91 (Reapproved 1996)
Standard Test Method for
Bitumen and Aggregate Content of Bitumen-Aggregate
Mixtures From Roofing Samples
This standard is issued under the fixed designation D 4074; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Footnote 1 was changed editorially in July 1996.
1. Scope 5. Apparatus
1.1 This test method covers the determination of the bitu- 5.1 Beaker, 500-mL capacity, without a pour spout.
men content of adhered aggregate surfacing on a roof, and the 5.2 Glass Cover Plate,5 3 5 3 0.12 in. (127 by 127 by 3
approximate mass per unit area of the flood coat and adhered mm).
aggregate. 5.3 Balance, 1000 6 0.1-g capacity.
1.2 The values stated in inch-pound units are to be regarded
6. Materials
as the standard.
1.3 This standard does not purport to address all of the 6.1 Isopropyl Alcohol, (CH ) CHOH, commercial grade.
3 2
6.2 Paper Cups, paraffin-coated, 2.4 in. (61 mm) in diam-
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- eter by 3 in. (76 mm) high, 5-oz (150-mL) capacity.
priate safety and health practices and determine the applica-
7. Sampling
bility and regulatory limitations prior to use.
7.1 Obtain samples in the field in accordance with Practice
2. Referenced Documents
D 2829.
2.1 ASTM Standards:
8. Procedure
D 71 Test Method for Relative Density of Solid Pitch and
2 5
8.1 Cut either a 5 ⁄8-in. or a 100-mm square specimen from
Asphalt (Displacement Method)
the roofing sample and collect any associated loose, bitumen-
D 2829 Practice for Sampling and Analysis of Built-Up
free aggregate in a tared paper cup.
Roofs
8.2 Add additional loose, bitumen-free aggregate to the cup
3. Summary of Test Method
from the remaining sample, if necessary, to obtain a 100 to
200-g specimen of the aggregate. Weigh the aggregate to the
3.1 The proportions of bitumen and aggregate in a mixture
are determined from their relative densities and the relative nearest 0.1 g and record as M .
a
8.3 Place the roofing specimen on aluminum foil or release
density of their mixture.
paper and carefully remove the adhered aggregate and top
4. Significance and Use
coating with a hot knife or scraper without damaging the top
4.1 This test method offers a convenient alternative to felt.
solvent extraction for the approximate determination of top-
2 2
NOTE 1—This will usually leave 4 to 8 lb/100 ft (200 to 400 g/m )of
coating bitumen and adhered aggregate in roofing samples,
bitumen on the surface of the roofing felt.
particularly when the bitumen is coal tar pitch.
This test method is under the jurisdiction of ASTM Committee D-8 on Roofing,
Waterproofing, and Bituminous Materials and is the direct responsibility of
Subcommittee D08.20 on Roof Membrane Systems.
Current edition approved Oct. 15, 1991. Published December 1991. Originally Catalog No. 1040 500-mL beaker, available from Corning Glass Works,
published as D 4074 – 85. Last previous edition D 4074 – 85. Houghton Park, Corning, NY 14830, may be used if the glass nub extending above
Annual Book of ASTM Standards, Vol 04.04. the lip of the beaker is removed with emery cloth.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 4074
8.4 Collect the adhered aggregate and top coating removed
where:
in 8.3 in a tared paper cup and add any associated loose,
M 5 weight of the mixture in air, g,
m
bitumen-coated aggregate. Weigh to the nearest 0.1 g and
T 5 weight of the covered beaker filled with alcohol, g,
record as M . and
m
W 5 weight of the covered beaker containing the mixture
8.5 Overfill the clean 500-mL b
...
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