ASTM D995-95b(2002)
(Specification)Standard Specification for Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures (Withdrawn 2009)
Standard Specification for Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving Mixtures (Withdrawn 2009)
ABSTRACT
This specification covers the standards for plants suitable for producing hot-mixed, hot-laid bituminous paving mixtures. The plant shall be able to uniformly combine and mix different sizes of aggregate from stockpiles, reclaimed asphalt pavement and bituminous material. This specification shall also describe the various components of batch, continuous mix, and drum mix plants. This standard can also be used to evaluate existing plants. This specification however does not cover plant operation and control or mixture production.
SCOPE
1.1 This specification covers requirements for plants suitable for producing hot-mixed, hot-laid bituminous paving mixtures.
1.2 The values stated in inch-pound units are to be regarded as the standard.
WITHDRAWN RATIONALE
This specification covers requirements for plants suitable for producing hot-mixed, hot-laid bituminous paving mixtures.
Formerly under the jurisdiction of Committee D04 on Road and Paving Materials, this specification was withdrawn in August 2009. This standard is being withdrawn without replacement due to its limited use by industry.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 995 – 95b (Reapproved 2002)
Standard Specification for
Mixing Plants for Hot-Mixed, Hot-Laid Bituminous Paving
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Mixtures
This standard is issued under the fixed designation D 995; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Requirements for All Plants
1.1 This specification covers requirements for plants suit- 4.1 Uniformity—The plant shall be capable of uniformly
able for producing hot-mixed, hot-laid bituminous paving combining and mixing various sizes of aggregate from stock-
mixtures. piles, reclaimed asphalt pavement, if required, and bituminous
1.2 The values stated in inch-pound units are to be regarded material.
as the standard. 4.2 Equipment for Preparation of Bituminous Material:
4.2.1 Tanks for storage of bituminous material shall be
2. Referenced Documents
equipped for heating the material, under effective and positive
2.1 ASTM Standards:
control at all times, to the temperature required in the paving
C 136 Test Method for Sieve Analysis of Fine and Coarse mixture specifications. Heating shall be by steam or oil coils,
2
Aggregates
electricity, or other means such that no flame shall contact the
D 8 Terminology Relating to Materials for Roads and Pave- heating tank.
3
ments
4.2.2 The circulating system for the bituminous material
3
D 140 Practice for Sampling Bituminous Materials shall be of adequate capacity to provide proper and continuous
circulation between storage tank and proportioning units dur-
3. Terminology
ing the entire operating period.
3.1 For definitions of terms see Terminology D 8.
4.2.2.1 The discharge end of the bituminous material circu-
3.2 Definitions of Terms Specific to This Standard:
lating pipe shall be kept below the surface of the bituminous
3.2.1 batch plant, n—a manufacturing facility for producing
material in the storage tank to prevent discharging the hot
bituminous paving mixtures that proportions the aggregate and
bituminous material into the open air.
bituminous constituents into the mix by weighed batches, adds
4.2.2.2 All pipe lines and fittings shall be steam or oil-
bituminous material by either weight or volume, and mixes the
jacketed or otherwise properly insulated to prevent heat loss.
blend.
When the bituminous material is emulsified asphalt, provisions
3.2.2 continuous mix plant, n—a manufacturing facility for
should be made in the bitumen transfer system that will enable
producing bituminous paving mixtures that continuously pro-
the operator to turn off or reduce the heat media from all lines,
portionstheaggregateandbituminousconstituentsintothemix
pumps, and jacketed bituminous material buckets as soon as
by a continuous volumetric proportioning system without
the system is open and circulating properly.
definite batch intervals.
4.2.3 Storage tank capacity shall be such as to ensure
3.2.3 drum mix plant, n—a manufacturing facility for pro-
continuous operation of the plant and uniform temperature of
ducing bituminous paving mixtures that continuously propor-
the bituminous material when it is introduced into the aggre-
tions aggregates, heats and dries them in a rotating drum, and
gate. Tanks shall be calibrated accurately to 100-gal (378.5-L)
simultaneously mixes them with a controlled amount of
intervals and shall be accessible for measuring the volume of
bituminous material. The same plant may produce cold-mixed
bituminous material at any time.
bituminous paving mixtures without heating and drying the
4.2.4 A sampling tap, complying with the requirements of
aggregates.
Practice D 140, shall be provided in the bituminous material
feed lines connecting the storage tanks to the bituminous
control unit.
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This specification is under the jurisdiction of ASTM Committee D04 on Road
4.2.5 When filled or native bituminous materials are used,
and Paving Materials and is the direct responsibility of Subcommittee D04.23 on
Plant-Mixed Bituminous Surfaces and Bases.
means shall be provided for agitation to maintain a uniform
Current edition approved Sept. 10, 1995. Published November 1995. Originally
product.
published as D 995 – 48 T. Last previous edition D 995 – 95a.
2
Annual Book of ASTM Standards, Vol 04.02.
3
Annual Book of ASTM Standards, Vol 04.03.
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D 995 – 95b (2002)
4.3 Mineral Filler—Adequate dry storage shall be provided 4.10.3 Ample unobstructed space shall be pro
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