ASTM D8038-16(2022)e1
(Practice)Standard Practice for Reclamation of Recycled Aggregate Base (RAB) Material
Standard Practice for Reclamation of Recycled Aggregate Base (RAB) Material
SIGNIFICANCE AND USE
4.1 Use of recycled aggregate base has become commonplace in transportation applications.
4.2 RAB may be used alone or in mixtures with other aggregate materials (virgin and/or recycled) in the production of unbound base course materials.
4.3 Quality of RAB is critical for successful reuse in pavement base applications. This practice is intended to provide a common baseline framework for assuring material, operator, and facility quality for production of RAB.
SCOPE
1.1 This practice covers selected aspects for reclamation of recycled aggregate base (RAB) material derived from asphalt pavement or concrete. RAB may be called recycled asphalt pavement (RAP) or recycled concrete aggregate (RCA).
1.2 This practice is provided related to material quality, material quality control testing, and also operator and facility qualifications.
1.3 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.
Note 1: Sieve size is identified by its standard designation in Specification E11. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.
1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title means only that the document has been approved through the ASTM consensus process.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Designation: D8038 − 16 (Reapproved 2022)
Standard Practice for
Reclamation of Recycled Aggregate Base (RAB) Material
This standard is issued under the fixed designation D8038; 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 (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Reapproved with editorial changes in June 2022.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This practice covers selected aspects for reclamation of
recycled aggregate base (RAB) material derived from asphalt
2. Referenced Documents
pavement or concrete. RAB may be called recycled asphalt
2.1 ASTM Standards:
pavement (RAP) or recycled concrete aggregate (RCA).
C117 Test Method for Materials Finer than 75-µm (No. 200)
1.2 This practice is provided related to material quality,
Sieve in Mineral Aggregates by Washing
material quality control testing, and also operator and facility
C131/C131M Test Method for Resistance to Degradation of
qualifications.
Small-Size Coarse Aggregate by Abrasion and Impact in
the Los Angeles Machine
1.3 Units—The values stated in SI units are to be regarded
as the standard. No other units of measurement are included in C136/C136M Test Method for Sieve Analysis of Fine and
Coarse Aggregates
this standard.
C535 Test Method for Resistance to Degradation of Large-
NOTE 1—Sieve size is identified by its standard designation in Speci-
Size CoarseAggregate byAbrasion and Impact in the Los
fication E11. The alternative designation given in parentheses is for
Angeles Machine
information only and does not represent a different standard sieve size.
C702/C702M Practice for Reducing Samples of Aggregate
1.4 This practice offers a set of instructions for performing
to Testing Size
one or more specific operations. This document cannot replace
D8 Terminology Relating to Materials for Roads and Pave-
educationorexperienceandshouldbeusedinconjunctionwith
ments
professional judgment. Not all aspects of this practice may be
D653 Terminology Relating to Soil, Rock, and Contained
applicable in all circumstances. This ASTM standard is not
Fluids
intended to represent or replace the standard of care by which
D75/D75M Practice for Sampling Aggregates
the adequacy of a given professional service must be judged,
D2940/D2940M Specification for Graded Aggregate Mate-
nor should this document be applied without consideration of
rial for Bases or Subbases for Highways or Airports
a project’s many unique aspects. The word “Standard” in the
D6307 Test Method forAsphalt Content ofAsphalt Mixture
title means only that the document has been approved through
by Ignition Method
the ASTM consensus process.
D6928 Test Method for Resistance of Coarse Aggregate to
1.5 This standard does not purport to address all of the
Degradation by Abrasion in the Micro-Deval Apparatus
safety concerns, if any, associated with its use. It is the
E11 Specification for Woven Wire Test Sieve Cloth and Test
responsibility of the user of this standard to establish appro-
Sieves
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 3. Terminology
1.6 This international standard was developed in accor-
3.1 Definitions:
dance with internationally recognized principles on standard-
3.1.1 For definitions of common technical terms in this
ization established in the Decision on Principles for the
standard, refer to Terminology D653 and D8.
Development of International Standards, Guides and Recom-
3.2 Definitions of Terms Specific to This Standard:
3.2.1 asphalt/concrete recycling facility (facility), n—the
physical plant (or plants) where disposed asphalt and concrete
This test method is under the jurisdiction ofASTM Committee D18 on Soil and
are received, processed, tested, and stockpiled. This may
Rock and is the direct responsibility of Subcommittee D18.14 on Geotechnics of
Sustainable Construction.
include material handling operations.
Current edition approved June 1, 2022. Published June 2022. Originally
3.2.2 asphalt/concrete recycling operator (operator), n—the
approved in 2016. Last previous edition approved in 2016 as D8038 – 16. DOI:
10.1520/D8038-16R22E01 company or companies that receive disposed asphalt and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8038 − 16 (2022)
concrete material and transform these materials into a finished trash; wood; roots; vegetation; soft, friable, thin, elongated or
recycled aggregate product. laminated pieces; disintegrated material; and hazardous
materials, and also shall be free from solvents or other
3.2.3 recycled aggregate base (RAB), n—aggregate derived
contaminating substances.
from processed/crushed asphalt or concrete pavement or struc-
5.2.2 Eachincomingloadofasphaltand/orconcreteshallbe
tural concrete.
visually inspected at the facility for deleterious materials prior
4. Significance and Use to loading materials to the crusher.
4.1 Use of recycled aggregate base has become common- 5.3 The requirements for finished product are:
place in transportation applications. 5.3.1 The final recycled aggregate shall be free (total of no
more than 1 % by mass) of organic and deleterious materials
4.2 RAB may be used alone or in mixtures with other
such as wood, metal, plaster, rubbery material (for example,
aggregate materials (virgin and/or recycled) in the production
tires, carpet pads), glass, and geosynthetics, when these mate-
of unbound base course materials.
rials are not classified as solid waste.
4.3 Quality of RAB is critical for successful reuse in
5.3.2 The final recycled aggregate may contain clay brick or
pavement base applications. This practice is intended to
clay tile up to 20 % by weight. Users can specify a different
provide a common baseline framework for assuring material,
value for brick or clay tile content.
operator, and facility quality for production of RAB.
5.3.3 The final recycled aggregate product shall conform to
the gradation requirement given in Table 1 based on ASTM
5. Material Quality Specifications
D2940/D2940M and shall be of such nature that it can be
5.1 General—The material quality specifications are de-
compacted readily under watering and rolling to form a firm
signed to ensure that the operator and the facility produce a
stable base.
RAB product that meets appropriate, generic quality specifi-
NOTE 3—Additional material characteristics also can be specified for
cations. Therefore, the limits contained within this ASTM
RAB. Durability can be evaluated and having a loss of no more than 50 %
standard may be considered as minimum quality standards.
by the Los Angeles abrasion test (following C131/C131M or C535 as
Individual RAB users and local agencies may make th
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