ASTM D3628-15

Standard Practice for Selection and Use of Emulsified Asphalts

SIGNIFICANCE AND USE
4.1 As indicated by Specifications D977 and D2397, emulsified asphalts are classified by type (rapid medium or slow setting) and by grade within type (viscosity in the case of the rapid-setting type or characteristic of the residual asphalt in the case of the medium and slow-setting types). Selection for use of a particular type and grade is controlled by type of construction (whether an application or a mix type), properties of the mineral aggregate (both grading and mineral composition), and environmental conditions during construction. For surface treatments and seals, emulsified asphalts are formulated to set rapidly upon contact with the mineral aggregate or pavement surface. When used in mix types, slower breaking is required to allow time for mixing and laydown. If the mix aggregate is open graded without appreciable fines, a medium-setting emulsified asphalt may be used that deposits a relatively hard asphalt. If the aggregate is dense-graded but does not contain a large amount of very fine material (dust), a medium-setting emulsified asphalt with a soft residue may be a good choice. However, if the dense-graded aggregate contains a large amount of very fine mineral matter, a slow-setting emulsified asphalt may be required.  
4.2 The recommendations in Table 1 should be considered only as a general guide for the selection of an emulsion for use. If the user is uncertain as to which to select for an intended use, the emulsified asphalt supplier should be contacted. (A) For definitions of terms used in this table, refer to Section 3 or Terminology D8.(B) RS-1 and CRS-1 may be used as a tack coat in special cases where night construction or high humidity exists.(C) Grades of emulsified asphalt other than MS-2h may be used where experience has shown that they give satisfactory performance.(D) May dilute with water by manufacturer or contractor per state regulation. Refer to specifying agency.
SCOPE
1.1 This practice covers the selection of emulsified asphalts for various paving and allied uses.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2015
• ICS: 91.100.50 - Binders. Sealing materials
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.41 - Emulsified Asphalt Specifications

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:D3628 −15
Standard Practice for
1
Selection and Use of Emulsified Asphalts
This standard is issued under the fixed designation D3628; 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 typically with a nominal maximum size of about 19 mm, and
containing sufficient sand that the emulsified asphalt will be
1.1 This practice covers the selection of emulsified asphalts
required to penetrate upward into the aggregate cover; the
for various paving and allied uses.
nominal maximum aggregate size may vary depending on the
1.2 The values stated in SI units are to be regarded as
course thickness desired and aggregate availability. It is an
standard. No other units of measurement are included in this
application method used in lieu of a chip seal to provide a
standard.
lower cost road.
1.3 This standard does not purport to address all of the 3.2.4.1 Discussion—In this case, nominal maximum size
safety concerns, if any, associated with its use. It is the
refers to the definition in Terminology D8.
responsibility of the user of this standard to establish appro-
3.2.5 multiple surface treatment—two or more single sur-
priate safety and health practices and determine the applica-
face treatments placed one on the other. The maximum
bility of regulatory limitations prior to use.
aggregate size of each successive treatment is usually one half
that of the previous one, and the total thickness is about the
2. Referenced Documents
same as the nominal maximum size aggregate particles of the
2
2.1 ASTM Standards:
first course.
D8 Terminology Relating to Materials for Roads and Pave-
3.2.6 pavement bases and surfaces—the lower or underly-
ments
ing pavement course atop the subbase or subgrade and the top
D977 Specification for Emulsified Asphalt
or wearing course. Cold-laid mixtures that are bound together
D2397 Specification for Cationic Emulsified Asphalt
with emulsified asphalts use either open or dense aggregate
gradations.
3. Terminology
3.2.7 sand—a mineral aggregate material consisting of par-
3.1 For definitions of terms used in this practice, refer to
ticles of rock passing a 4.75-mm sieve and only about 5 %
Terminology D8.
passing the 75-µm sieve.
3.2 Definitions of Terms Specific to This Standard:
3.2.8 sand seal—a bituminous-sand application to an exist-
3.2.1 bituminous-aggregate applications—applications of
ing pavement surface to seal the surface and to function as a
emulsified asphalt to a prepared aggregate base or pavement
light-wearing course.
surface followed by the application of aggregate.
3.2.9 sandy soil—a material consisting essentially of fine
3.2.2 bituminous-aggregate mixtures—a combination of
aggregate particles smaller than 2.00-mm sieve and usually
emulsified asphalt and aggregate that is physically mixed by
containing material passing a 75-µm sieve. This material
mechanical means, spread on the job site, and compacted.
usually exhibits plasticity characteristics.
3.2.3 bituminous applications—the application of sprayed
3.2.10 single-surface treatment (chip seal)—a wearing sur-
emulsified asphalt not involving the use of aggregates.
faceofemulsifiedasphaltandaggregateinwhichtheaggregate
3.2.4 graded aggregate seal, n—a single surface treatment
is placed uniformly over the applied emulsified asphalt in a
in which the aggregate is graded with little or no mineral filler,
single layer, the thickness of which approximates the nominal
maximum size of the aggregate used.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
3.2.11 treatments and seals—a bituminous aggregate appli-
Paving Materials and is the direct responsibility of D04.41 on Emulsified Asphalt
Specifications.
cation to any type of road or pavement surface for the purpose
Current edition approved Dec. 1, 2015. Published January 2016. Originally
of providing a wearing course, or a surface seal, or both.
approved in 1978. Last previous edition approved in 2008 as D3628 – 08. DOI:
10.1520/D3628-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4. Significance and Use
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.1 As indicated by Specifications D977 and D2397, emul-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. sified asphalts are classified by type (rapid medium or slow
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D3628−15
setting) and by grade within type (viscosity in the case of
...

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.
Designation: D3628 − 08 D3628 − 15
Standard Practice for
1
Selection and Use of Emulsified Asphalts
This standard is issued under the fixed designation D3628; 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
1.1 This practice covers the selection of emulsified asphalts for various paving and allied uses.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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
2
2.1 ASTM Standards:
D8 Terminology Relating to Materials for Roads and Pavements
D977 Specification for Emulsified Asphalt
D2397 Specification for Cationic Emulsified Asphalt
3. Terminology
3.1 For definitions of terms used in this practice, refer to Terminology D8.
3.2 Definitions:Definitions of Terms Specific to This Standard:
3.2.1 bituminous-aggregate applications—applications of bituminous materialemulsified asphalt to a prepared aggregate base
or pavement surface followed by the application of aggregate.
3.2.2 bituminous-aggregate mixtures—a combination of bituminous materialemulsified asphalt and aggregate that is physically
mixed by mechanical means, spread on the job site, and compacted.
3.2.3 bituminous applications—the application of sprayed bituminous coatingsemulsified asphalt not involving the use of
aggregates.
3.1.4 crack filler—the bituminous material used to fill and seal cracks in existing pavements.
3.1.5 dense-graded aggregate—aggregate that is graded from the maximum size, down to and including filler, with the object
of obtaining a bituminous mix with a controlled void content and high stability.
3.1.6 dust binder—a light application of bituminous material for the express purpose of laying and bonding loose dust.
3.1.7 fog seal—a light spray application of asphalt to an existing pavement as a seal to inhibit raveling, or seal the surface, or
both.
3.2.4 graded aggregate seal, n—a single surface treatment in which the aggregate is graded with little or no mineral filler,
typically with a nominal maximum size of about 19 mm, and containing sufficient sand that the bituminous materialemulsified
asphalt will be required to penetrate upward into the aggregate cover; the nominal maximum aggregate size may vary depending
on the course thickness desired and aggregate availability. It is an application method used in lieu of a chip seal to provide a lower
cost road.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of D04.41 on Emulsified Asphalt
Specifications.
Current edition approved Jan. 1, 2008Dec. 1, 2015. Published January 2008January 2016. Originally approved in 1978. Last previous edition approved in 20062008 as
D3628 – 06.D3628 – 08. DOI: 10.1520/D3628-08.10.1520/D3628-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.2.4.1 Discussion—
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D3628 − 15
In this case, nominal maximum size refers to the definition in Terminology D8.
3.1.9 maintenance mix—a mixture of bituminous material and mineral aggregate applied at ambient temperature for use in
patching holes, depressions, and distress areas in existing pavements, using appropriate hand or mechanical methods in placing and
compacting the mix. These mixes may be designed for immediate use or for use out of a stockpile at a later date without further
processing.
3.1.10 mixed-in-place—the procedures by which the bituminous material and mineral aggregrate are mixed on the job site by
means of travel plants, blade mixing, or other special road-mixing equipment.
3.1.11 mulch treatment—a spray application of bituminous material used to temporarily stabilize a recently seeded area. The
bituminous mat
...