Saudi Arabian Oil Company: SECTION 02513 Sub-Base/Base Course and Asphalt Concrete Paving
Saudi Arabian Oil Company: SECTION 02513 Sub-Base/Base Course and Asphalt Concrete Paving
PMT OPRNS
SAUDI ARABIAN OIL COMPANY
SECTION 02513
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
SUB-BASE/BASE COURSE AND ASPHALT CONCRETE PAVING
ENGG CERT
SUBSECTION INDEX
Part 1 - General
1.01 Description
1.02 Related Work
DESCRIPTION
Part 2 - Products
Part 3 - Execution
DATE
PART 1 - GENERAL
DATE:
CONSTRUCTION
AGENCY 1.01 Description
DATE:
A. Work in this Section includes, but is not limited to; site grading, granular sub-base,
OPERATIONS
aggregate base course, prime coat, tack coat, asphalt concrete paving, sampling and
testing for the new construction (asphalt road travel lines and asphalted parkings
DATE: inclusive) as indicated on the Drawings.
CONTROL NUMBER
VERIFICATION
DATE:
APPROVAL/CERTIFICATION REQUIREMENTS,
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
A. Ministry of Transport, The Technical Administration for Roads and Ports - General
ENGG CERT
Soils.
NO.
REV
7. T 176 (latest edition) - Plastic Fines in Graded Aggregate and Soils by Use of
DISCIPLINE
ENGINEER the Sand Equivalent Test.
DATE:
8. T 179 (latest edition) - Effect of Heat and Air on Asphalt Materials (Thin-film
PROJECT
ENGINEER oven test).
3. ASTM D 4254 - Test Method for Minimum Index Density and Unit Weight of
VERIFICATION
DATE:
BY:
REVISIONCERTIFICATION
APPROVAL/CERTIFICATION REQUIREMENTS,
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
2.01 Sub-Base Course
ENGG CERT
A. General: Sub-base course material shall consist of mixture of gravel and stone
fragments with sand, silt and clay.
C. Gradation Requirements: Sub-base course material shall be gravel, mixed with fine
material consisting of natural material, of suitable binding quality.
The combined materials shall consist of a mixture of well graded gravel or uniformly
graded from coarse to fine to conform to the following gradation requirements:
* If less than 30% of the sample is retained on a ¾ in. sieve use (ASTM
DATE: D1557). If 30% or more of the sample is retained on a ¾ in. sieve use
CERTIFIED
(AASHTO T180).
DATE:
CONSTRUCTION
D. Physical Requirements: Sub-base course aggregate shall conform to the following
AGENCY physical requirements:
DATE:
1. Loss of Magnesium Sulfate Soundness Test (ASTM C88):
OPERATIONS
2. Loss by Abrasion Test (ASTM C131 or ASTM C535)- 50% maximum for
DATE:
Classes A&B.
BY:
REVISIONCERTIFICATION
APPROVAL/CERTIFICATION REQUIREMENTS,
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
E. CBR Ratio: When tested in accordance with ASTM D-1883, California Bearing Ratio,
after four days soaking, shall not be less than 25 for Class `A' and Class 'B' of the
ENGG CERT
A. General: All aggregates for base course shall consist of clean, tough, durable, sharp
angle fragments free of any excess of thin or elongated pieces, and reasonably free
of soft, disintegrated or decomposed stone, dirt, organic matter, shale, clay, clay lump
or other deleterious matter.
DESCRIPTION
B. Production: Crushed gravel or stone fragments for base shall consist of the product
obtained by crushing gravel that has first been screened in such a manner that not
less than 90% of the material to be crushed is retained on a one-quarter (1/4) in
sieve. The amount of crushing shall be regulated so that at least 80%, by weight, of
the pieces retained on the No. 4 sieve have at least one (1) mechanically fractured
face.
C. Aggregate Mix and Gradation Requirements: Base Course material shall be crushed
rock or crushed gravel, mixed with fine material consisting of quarry screening, or
JO/EWO
The combined materials shall consist of a mixture of all aggregate uniformly graded
DATE
DATE:
2-1/2 in. 100 -
PROJECT
ENGINEER 2- in. 90-100 -
1-1/2 in. 60-90 100
DATE: 1 in. 42-77 60-100
CERTIFIED
3/4 in. 35-70 55-85
1/2 in. 25-60 -
DATE:
CONSTRUCTION
No. 4 15-40 35-60
AGENCY No. 10 10-26 25-50
No. 40 5-15 15-30
DATE:
No. 200 2-9 8-15
OPERATIONS
DATE:
APPROVAL/CERTIFICATION REQUIREMENTS,
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
Classes A&B.
ENGG CERT
3. Thin and Elongated Pieces, by Weight (larger than 1 in., thickness less than
1/5 length) - Maximum 5% for Classes A&B.
E. CBR Ratio: When tested in accordance with ASTM D-1883, California Bearing Ratio,
after four days soaking, shall not be less than 50 for Class `B' and 100 for Class 'A'.
A. Liquid asphalt for tack coat shall be rapid curing type cutback grades RC-250
conforming to Ministry of Transport.
DATE
DATE:
General Requirements AASHTO Test Method
PROJECT
ENGINEER Grade 60-70 and Acceptable Limits
5 seconds percent of
VERIFICATION
original T 49 52 min.
EDSD
DATE:
APPROVAL/CERTIFICATION REQUIREMENTS,
Solubility in organic
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
character and shall not foam when heated to 176.7 degrees C.
ENGG CERT
B. Mineral Aggregate:
1. Gradation: When tested according to ASTM C-117 and ASTM C-136, the
combined mineral aggregate shall conform to the following grading:
a. Class A:
b. Class B:
DISCIPLINE
ENGINEER
APPROVAL/CERTIFICATION REQUIREMENTS,
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
(ASTM D-2419) 50 minimum
Plasticity Index
ENGG CERT
Loss by Abrasion %
(ASTM C-131) 40% maximum
A. The job-mix formula shall combine the mineral aggregates and asphalt in such
proportion as to produce a mixture conforming to the following composition limits by
NO.
REV
Mix Item %
DATE:
PROJECT
ENGINEER Total Mineral Aggregates 93-96
Asphaltic Binder 4-7
DATE:
CERTIFIED
When tested according to the Marshall Method, the bituminous mixture shall conform
to the following requirements:
DATE:
CONSTRUCTION
AGENCY Characteristics Asphalt Base Surface
DATE:
Stability (kg) 700 min. 800 min.
OPERATIONS
Flow (mm) 2.4-5.0 2.4-4.0
stability by sub-merging
VERIFICATION
specimens in water at
EDSD
compared to stability
BY:
APPROVAL/CERTIFICATION REQUIREMENTS,
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
mix % 3.0-7.0 3.0-5.0
ENGG CERT
B. Maximum Variation: Upon receiving the job-mix formula, approved by Saudi Aramco
Representative, Contractor shall adjust his plant to proportion the individual
aggregates, mineral filler and asphalt to produce a final mix that, when compared to
the job-mix formula, shall be within the following limits:
Tolerance
Material Sieve Size Asphalt Base Wearing
½” + 5.0% + 6.0%
DATE
DISCIPLINE
ENGINEER No. 80 + 3% + 3%
DATE:
No. 200 + 1.5% + 1.5%
PROJECT
ENGINEER Asphalt Content + 0.4% + 0.4%
DATE:
CERTIFIED Submit asphalt mix design to Saudi Aramco Representative for review and approval
at least 30 days prior to use. The asphalt concrete shall be graded from a
DATE: Government approved batch plant.
CONSTRUCTION
AGENCY
C. The mixture temperature shall have a temperature between 139 degrees C and 163
DATE:
degrees C when it leaves the plant and shall be transported from the mixing plant to
OPERATIONS the point of use in pneumatic-tired vehicles having tight bodies, previously cleaned of
all foreign materials. The mixture shall be delivered on the road or surface to be
DATE:
paved, between the temperature of 139 degrees C and 163 degrees C.
CONTROL NUMBER
VERIFICATION
EDSD
PART 3 - EXECUTION
DATE:
APPROVAL/CERTIFICATION REQUIREMENTS,
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
A. Demolition and Existing Material Cuts: Existing asphalt, or other materials identified
OF THIS DRAWING IS COVERED, FOR ALL
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
saw cut, providing clean, neat vertical edges that will provide a suitable surface for
matching of new asphalt.
ENGG CERT
B. Subgrade preparation: Contractor shall, as a part of the Work and prior to delivery of
materials for the sub-base course, prepare the roadbed surface including parking
areas by sprinkling, blading, rolling and lightly scarifying where necessary, until the
proper crown is obtained. When compacted and ready for sub-base course
construction, the roadbed shall be well compacted, smooth hard and uniform, all
irregularities having been bladed out and rolled smooth.
DESCRIPTION
C. Sub-grade Compaction: Subgrade shall be compacted to not less than 95% of ASTM
D 1557 or AASHTO T 180, method D, or to 85% of relative density determined by
ASTM D 4253 and D 4254.
A. Sub-Base Course Placement: Do not place any sub-base course material until the
subgrade upon which it is to be placed has been approved by Saudi Aramco
DATE
Representative.
NO.
REV
B. The sub-base course shall be compacted to not less than 95% of the maximum
DISCIPLINE
ENGINEER laboratory density as determined by ASTM D-1557, Method D, or AASHTO- T180.
DATE:
C. Sub-Base Course Maintenance: Following the construction of the granular sub-base,
PROJECT
ENGINEER the compacted sub-base course shall be maintained by Contractor. Contractor shall
blade, broom and otherwise maintain the sub-base, keeping it free from raveling, and
DATE: other defects until such time as the other surface is applied. Water shall be applied at
CERTIFIED
such time and in such quantities as directed by Saudi Aramco Representative.
DATE:
CONSTRUCTION
3.03 Base Course Placement, Compaction and Maintenance
AGENCY
A. Base Course Placement: Do not place any base course material until the sub-base
DATE:
upon which it is to be placed has been approved by Saudi Aramco Representative.
OPERATIONS
B. The base course shall be compacted to not less than 100% of the maximum
DATE: laboratory density as determined by ASTM D-1557, Method D, or AASHTO- T180.
CONTROL NUMBER
VERIFICATION
C. Base Course Maintenance: Following the construction of the aggregate base, the
EDSD
broom and otherwise maintain the base, keeping it free from raveling, and other
BY:
defects until such time as the bituminous prime or other surface is applied. Water
REVISIONCERTIFICATION
APPROVAL/CERTIFICATION REQUIREMENTS,
shall be applied at such time and in such quantities as directed by Saudi Aramco
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Representative.
(DCC) NO. _____________________
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
A. A prime coat consists of the initial application of liquid asphalt onto the surface of a
ENGG CERT
B. Cleaning Surface: Immediately before applying the bituminous primer material, the
surface shall be cleaned of all loose dirt and other objectionable materials with a
power broom, hand broom, or blower. If so ordered by Saudi Aramco Representative,
the surface shall be lightly bladed and rolled immediately prior to the application of the
bituminous material, in which case brooming or blowing will not be required. Saudi
Aramco Representative may order a light application of water, just before application
DESCRIPTION
C. Application: Prime coat shall be applied only when the surface to be treated is dry
and when the temperature in the shade is 8 degrees C and rising. Bituminous
material shall be applied by means of a distributor at a rate of 1.75 liters per sq.m and
at a temperature between 50 degrees to 80 degrees C. If the material is applied in
two lanes, there shall be an overlap of at least 200 mm. Any prescribed application
may be divided into two applications to prevent flowing of the surface and additional
bituminous material shall be applied where surface conditions indicate it is required.
JO/EWO
D. Drying Time: The primed surface shall be kept free from all traffic and in a clean
condition pending placement of the covering asphaltic concrete pavement. A
minimum period of 24 hours shall be allowed for the absorption and curing of the
DATE
A. 1. Concrete Surfaces: Tack coat shall be applied to all concrete surfaces that
DATE:
will be in contact with the asphalt pavement. Tack coat applications shall take
PROJECT
ENGINEER place prior to the paving operations and shall include contact surfaces of
concrete gutters and other drainage structures.
DATE:
CERTIFIED
2. Asphalt Surfaces: Tack coat shall be applied between the binder course and
the surface course; new and old asphalt surface, and vertical cut of adjacent
DATE:
CONSTRUCTION
to a new asphalt. If application of the surface is delayed by more than 3 days,
AGENCY or if dirt, sand or other impurities have contaminated the tack coat, then a new
tack coat shall be applied after the original one has been swept clean.
DATE:
OPERATIONS
B. Method of Application: The bituminous material shall be applied on the binder course
by means of a bituminous distributor at a maximum rate of 0.25 liters per sq.m or as
DATE: directed by Saudi Aramco Representative. A hand broom shall be used for
CONTROL NUMBER
application of the tack coat to concrete surfaces not covered by the bituminous
VERIFICATION
distributor.
EDSD
DATE:
APPROVAL/CERTIFICATION REQUIREMENTS,
with tarpaulins until unloaded, and unless it has a temperature of at least 139 degrees
(DCC) NO. _____________________
C.
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION
THIS DRAWING AND THE INFORMATION CONTAINED HEREIN ARE THE SOLE PROPERTY OF SAUDI ARAMCO. NO REPRODUCTION IN FULL OR IN PART SHALL BE OBTAINED FROM THIS DOCUMENT WITHOUT THE WRITTEN CONSENT OF ITS OWNER.
B. Placement and Compaction: Placement and compaction of the bituminous mixture
shall progress in sections not more than 90 m in length. The bituminous mixture shall
ENGG CERT
be spread, shaped and finished with the power machine with automatic adjustable
grade controlled by a ski or a straight line. The mixture shall be placed one-half width
or one traffic lane at a time. After the first width has been compacted, the second
width shall be placed, finished and compacted as specified for the first width. Do not
place asphaltic concrete when the atmosphere temperature is below 4 degrees C, nor
during fog, rain, wind or other unsuitable conditions.
C. Spreading: Spread material in a placement thickness so that after rolling the nominal
DESCRIPTION
thickness of the compacted bituminous material shall not be more than 80 mm per
layer and not less than 50 mm per layer.
D. Rolling: After a layer has been placed the full width, the surface shall be rolled.
Rolling shall be longitudinal, and shall commence at the outer edge of the road
overlapping it and progress towards the center. Rolling shall continue until the
surface is of uniform texture and degree of compaction is achieved, and is true to
grade and cross section. Under no circumstances shall the center of the surface
course be rolled first.
JO/EWO
E. Asphalt Compaction Density: The requirement shall be equal to or greater than 96%
of the Marshall density of each day production.
DATE
F. Protection of Work: Protect those portions of curbs, manholes, valve boxes and other
structures, that will be visible upon completion of the project, from bituminous
NO.
REV
material. Remove any bituminous material from asphalt fouled surfaces and clean
DISCIPLINE
ENGINEER these surfaces to the satisfaction of Saudi Aramco Representative.
DATE:
3.07 Compaction Sampling and Testing
PROJECT
ENGINEER
APPROVAL/CERTIFICATION REQUIREMENTS,
- END OF SECTION -
THIS INDICATES THAT REV. NO.__________
CERTIFICATE
Section 02513
Construction Specifications & Scope of Work DWG.TYPE PLANT NO. INDEX DRAWING NO. SHT.NO. REV.NO.
REVISION