ASTM D4552/D4552M-20
(Classification)Standard Classification for Hot-Mix Recycling Agents
Standard Classification for Hot-Mix Recycling Agents
SIGNIFICANCE AND USE
3.1 Recycling of deteriorated asphalt pavements is being used with increasing frequency for its economy and benefit of conserving raw materials. The objective of recycling is to reuse the two ingredients of asphalt concrete-aggregate and asphalt binder and to restore the desired properties to the mixture. Recycling is carried out hot or cold, depending on the condition of the deteriorated pavement, construction procedure, availability of equipment, and cost. This classification is for classifying recycling agents to be used in recycled asphalt mixtures.
Note 3: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.
SCOPE
1.1 This standard covers a standardized method whereby recycling agents to be used in hot recycling of asphalt concrete can be classified. The recycling agents are classified by viscosity in mm2/s measured at 60 °C [140 °F]. This classification does not apply to emulsified recycling agents.
1.2 This standard does not address the performance of asphalt binder blends with recycling agents, or that of hot-mix asphalt mixture containing recycling agents. Adherence of a recycling agent to this specification does not necessarily relate to the performance of asphalt binders and mixtures containing the recycling agents.
Note 1: The impact of recycling agents has been evaluated by extracting the asphalt binder from the pavement to be recycled, and combining with the recycling agent to meet the appropriate grade within Specification D946/D946M or Table 1, 2, or 3 of Specification D3381/D3381M. More recently, some specifications have referred to performance grading as described in Specification D6373 or D8239.
Note 2: Efforts are underway to utilize performance-based testing of the asphalt mixture containing recycling agents as a measure of compliance.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.4 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.
1.5 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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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.
Designation: D4552/D4552M −20
Standard Classification for
1
Hot-Mix Recycling Agents
This standard is issued under the fixed designation D4552/D4552M; 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.
1. Scope 2. Referenced Documents
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1.1 This standard covers a standardized method whereby 2.1 ASTM Standards:
recycling agents to be used in hot recycling of asphalt concrete D70 Test Method for Density of Semi-Solid Asphalt Binder
can be classified. The recycling agents are classified by (Pycnometer Method)
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viscosity in mm /s measured at 60 °C [140 °F]. This classifi- D92 Test Method for Flash and Fire Points by Cleveland
cation does not apply to emulsified recycling agents. Open Cup Tester
D140/D140M Practice for Sampling Asphalt Materials
1.2 This standard does not address the performance of
D946/D946M Specification for Penetration-Graded Asphalt
asphalt binder blends with recycling agents, or that of hot-mix
Binder for Use in Pavement Construction
asphalt mixture containing recycling agents. Adherence of a
D1298 Test Method for Density, Relative Density, or API
recycling agent to this specification does not necessarily relate
Gravity of Crude Petroleum and Liquid Petroleum Prod-
to the performance of asphalt binders and mixtures containing
ucts by Hydrometer Method
the recycling agents.
D2007 Test Method for Characteristic Groups in Rubber
NOTE 1—The impact of recycling agents has been evaluated by
Extender and Processing Oils and Other Petroleum-
extracting the asphalt binder from the pavement to be recycled, and
Derived Oils by the Clay-Gel Absorption Chromato-
combining with the recycling agent to meet the appropriate grade within
graphic Method
Specification D946/D946M or Table 1, 2, or 3 of Specification D3381/
D2170/D2170M Test Method for Kinematic Viscosity of
D3381M.Morerecently,somespecificationshavereferredtoperformance
grading as described in Specification D6373 or D8239.
Asphalts
NOTE 2—Efforts are underway to utilize performance-based testing of
D2872 Test Method for Effect of Heat and Air on a Moving
the asphalt mixture containing recycling agents as a measure of compli-
Film of Asphalt (Rolling Thin-Film Oven Test)
ance.
D3381/D3381M Specification for Viscosity-Graded Asphalt
1.3 The values stated in either SI units or inch-pound units
Binder for Use in Pavement Construction
are to be regarded separately as standard. The values stated in
D3666 Specification for Minimum Requirements for Agen-
each system may not be exact equivalents; therefore, each
cies Testing and Inspecting Road and Paving Materials
system shall be used independently of the other. Combining
D6373 Specification for Performance Graded Asphalt
values from the two systems may result in nonconformance
Binder
with the standard.
D8239 Specification for Performance-Graded Asphalt
1.4 This standard does not purport to address all of the
Binder Using the Multiple Stress Creep and Recovery
safety concerns, if any, associated with its use. It is the
(MSCR) Test
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3. Significance and Use
mine the applicability of regulatory limitations prior to use.
3.1 Recycling of deteriorated asphalt pavements is being
1.5 This international standard was developed in accor-
used with increasing frequency for its economy and benefit of
dance with internationally recognized principles on standard-
conservingrawmaterials.Theobjectiveofrecyclingistoreuse
ization established in the Decision on Principles for the
the two ingredients of asphalt concrete-aggregate and asphalt
Development of International Standards, Guides and Recom-
binder and to restore the desired properties to the mixture.
mendations issued by the World Trade Organization Technical
Recycling is carried out hot or cold, depending on the
Barriers to Trade (TBT) Committee.
condition of the deteriorated pavement, construction
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This classification is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.40 on
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Asphalt Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2020. Published July 2020. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 1986. Last previous edition approved in 2016 as D4552/D4552M – 10 (2016). Standards volume info
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
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Designation: D4552/D4552M − 10 (Reapproved 2016) D4552/D4552M − 20
Standard PracticeClassification for
1
Classifying Hot-Mix Recycling Agents
This standard is issued under the fixed designation D4552/D4552M; 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.
1
ε NOTE—The words ‘asphalt’ and ‘asphalt cement’ were changed editorially to ‘asphalt binder’ in December 2016.
1. Scope
1.1 This practice covers a standardized method whereby petroleum product additives to be used in hot recycling of asphalt
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concrete can be identified. The products are classified by viscosity in mm /s measured at 60 °C [140 °F]. This practice does not
apply to emulsified materials.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in nonconformance with the standard.
1.3 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
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2.1 ASTM Standards:
D70 Test Method for Density of Semi-Solid Asphalt Binder (Pycnometer Method)
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D140 Practice for Sampling Asphalt Materials
D946 Specification for Penetration-Graded Asphalt Binder for Use in Pavement Construction
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D1754 Test Method for Effects of Heat and Air on Asphaltic Materials (Thin-Film Oven Test)
D2007 Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the
Clay-Gel Absorption Chromatographic Method
D2170 Test Method for Kinematic Viscosity of Asphalts
D2171 Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
D2872 Test Method for Effect of Heat and Air on a Moving Film of Asphalt (Rolling Thin-Film Oven Test)
D3381 Specification for Viscosity-Graded Asphalt Binder for Use in Pavement Construction
3. Significance and Use
3.1 Recycling of deteriorated asphalt pavements is being used with increasing frequency for its economy and benefit of
conserving raw materials. The objective of recycling is to reuse the two ingredients of asphalt concrete-aggregate and asphalt
binder and to restore the desired properties to the mixture. Recycling is carried out hot or cold, depending on the condition of the
deteriorated pavement, construction procedure, availability of equipment, and cost. This practice is for classifying recycling agents
to be used in hot recycling.
4. Classification
4.1 This practice describes recycling agents (RA) as belonging to one of the following six groups: RA 1, RA 5, RA 25, RA 75,
RA 250, or RA 500, as shown in Table 1. The viscosity ranges are designed to avoid overlap and to provide sufficient flexibility
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This practiceclassification is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.40 on
Asphalt Specifications.
Current edition approved Dec. 1, 2016July 1, 2020. Published December 2016July 2020. Originally approved in 1986. Last previous edition approved in 20102016 as
D4552/D4552M – 10.D4552/D4552M – 10 (2016). DOI: 10.1520/D4552_D4552M-10R16E01.10.1520/D4552_D4552M-20.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D4552/D4552M − 20
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TABLE 1 Physical Properties of Hot-Mix Recycling Agents
NOTE 1—Compliance requires the asphalt binder be extracted from the pavement to be recycled and combined with the recycling agent being tested. This combination should be in accordance
with ratio of recycling agent t
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