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When to Use What Grade of Asphalt and Why

Asphalt and Why Ellis G. W illiams, District Engineer The Asphalt Institute Asphalt is one of the oldest adhesives and waterproofing materials known to man. Its early uses, dating back as far as 3800 B. C., were as mortar for building stones, reservoir and canal linings, and paving blocks.

Georgia DOT Asphalt Pavement Selection Guidelines

9.5, 12.5, 19, and 25 mm. An approved mix design of a given type is assigned an alpha-numeric code indicating the sources of the aggregate, the mix type and size, and the certified commercial lab which authored it. For example, a mix with the identifier 16-12.5SP-10-6 would be a 12.5mm

SECTION 400 – ASPHALT PAVEMENTS SECTION 401 – …

SECTION 400 – ASPHALT PAVEMENTS SECTION 401 – QUALITY CONTROL/QUALITY ASSURANCE, QC/QA, HOT MIX ASPHALT, HMA, PAVEMENT 401.01 Description This work shall consist of one or more courses of QC/QA HMA base, intermediate, or surface mixtures constructed on prepared foundations in accordance with 105.03. 401.02 Quality Control

GUIDE FOR SPECIFYING ASPHALT PAVEMENTS FOR LOCAL ...

mix types. It also defines the appropriate method to calculate the percentage of RAP and/or RAS allowed as % Binder Replacement . That is, the % of recycled materials is calculated on the basis mass (weight) of asphalt binder contained in each of the respective materials compared to the total weight (mass) of asphalt binder of the mix.

Mix Types – Pavement Interactive

5 Different Types of Asphalt Pavement #1: Hot Mix Asphalt. Hot mix asphalt is considered the most effective choice for driveways because it produces a strong & durable surface that is easy to repair and maintain. Hot mix asphalt consists of a combination of 95% stone, gravel, or sand that is held together by asphalt cement, a product of crude oil.

SCDOT Asphalt Mixes (compared to other states), Asphalt ...

Asphalt Mix Type Comparisons. South Carolina. Old Designation(s) 12.5mm SuperPave. Surface Type 1D Surface CM. Surface Type 1 Surface Type 3 9.5mm SuperPave. Surface Type 4. 4.75mm SuperPave Thin Lift. Popcorn Porous Asphalt. 19mm SuperPave. Surface Type 1C Old Surface B. Binder Type 1 Old Intermediate B. Binder Type 2. Base Type 1.

Section 400 BITUMINOUS PAVEMENTS

2. The "F" designation in the mix type indicates that high friction coarse aggregates are required. 3. When slag aggregates are used in the mix, the asphalt content shall be increased accordingly5 minimum 25 percent for an all slag mix. 4. The asphalt content job mix tolerance of ±0.4% shall not apply to Marshall Design mixtures. 5.

Item 341 Dense-Graded Hot-Mix Asphalt

Dense-Graded Hot-Mix Asphalt 1. DESCRIPTION Construct a hot-mix asphalt (HMA) pavement layer composed of a compacted, dense-graded mixture of aggregate and asphalt binder mixed hot in a mixing plant. Payment adjustments will apply to HMA placed under this specification unless the HMA is deemed exempt in accordance with Section 341.4.9.4., "Exempt

Are There Different Types Of Asphalt And If So, What ...

The two types of asphalt are very similar, but they do have a slight difference. The 41A is also known as the driveway mix, as it is commonly used for driveways. The 41A has a mixture of rock and sand that is very fine in diameter with an oil content up to a 6.0%. The oil content is added to the mixture to combine, then applied to the area for ...

Roadside Management Toolbox: Asphalt Concrete | Caltrans

Asphalt concrete (AC) is a standard Type B asphalt concrete mixed, spread and compacted as noted in the Caltrans standards. Base material (4 -8 inches) and AC depth (2 - 6 inches) will vary depending on site specific requirements.

ASPHALT CONCRETE SECTION 39 SECTION 39 ASPHALT …

Asphalt concrete shall conform to Section 39 of the Caltrans Standard Specifications and these City Standard Specifications. 39-1.01 Description. -Asphalt concrete is designated as Type A, Type B, Type C, or Open Graded. Type C asphalt concrete shall be as specified in the special provisions. Asphalt concrete is also designated by gradation ...

2019 Asphalt Specification Update

• Use Intermediate B when there are drop off restrictions • High volume primary & secondary B 5.1 PG 64-22 200 • Old Surface Type B Mixture • Interstate & High volume primary B 5.4 PG 64-22 200 - 500 • Specialty warm mix – only used on high volume routes for …

What is Superpave? All You Need to Know - Gilson Co.

A New Approach to Asphalt Mix Design Rather than a specific process or procedure, Superpave is a performance-based specification for asphalt binder and volumetric mixture design. The idea was to allow asphalt pavement designs that could handle the unique weather and traffic conditions of a given site in any geographic area of the U.S.

» Asphalt Mixes

Gap-graded (stone matrix asphalt (SMA)) is a type of mix usually reserved for high-traffic and truck volumes on interstates and primary roads. These mixes generally cost more due to the strict aggregate requirements, higher asphalt cement contents, and the specialized asphalt plant equipment required.

SECTION 13 –HOT MIX ASPHALT, HMA, PAVEMENT 13.1 …

GIFE HOT MIX ASPHALT, HMA, PAVEMENT SECTION 13 Rev. 12-16-20 13-1 SECTION 13 –HOT MIX ASPHALT, HMA, PAVEMENT 13.1 INTRODUCTION (Rev. 09-29-09) INDOT has specifications for both QC/QA HMA (Section 401) and nonQC/QA HMA - (Section 402) mixtures. The major differences between the two specifications are the

DENSE-GRADED HOT-MIX ASPHALT (METHOD)

will be available at the location shown on the plans. When RAP is used, determine asphalt content and gradation for mixture design purposes. Perform other tests on RAP when shown on the plans. When RAP is allowed by plan note, use no more than 30% RAP in Type A or B …

SECTION 402 – HOT MIX ASPHALT, HMA, PAVEMENT

SECTION 402 – HOT MIX ASPHALT, HMA, PAVEMENT 402.01 Description. This work shall consist of one or more courses of HMA base, ... Mixture Type Type A Type B Type C Design ESAL 200,000 1,000,000 11,000,000 Surface 9.5 mm 9.5 mm 9.5 mm Surface - PG Binder 64-22 64-22 70-22 ...

TxDOT Specifications

REFERENCE ITEMS (210), (300), (301), (320), (520), (585) Go to Top. 341 - DENSE GRADED HOT MIX ASPHALT (QCQA) SPECIFICATION REQUIREMENTS 1) Specify the type and grade of Performance Grade (PG) asphalt binder on the set of plans. 2) If different aggregate quality requirements (listed in Table 1) are desired, specify on the set of plans. 3) Specify the surface …

Types of Asphalt | Asphalt Materials

There are three main types of asphalt: Hot Asphalt, MC Cold Mix, and UPM. There are also different varieties of these asphalts for summer and winter use. Below is a brief overview of each type of asphalt. Hot Asphalt is the type of asphalt that you mostly see when driving past a construction crew. Use mostly for paving and patching, Hot Asphalt ...

Choosing the Right Asphalt Mix For the Right Road

Asphalt Mix For the Right Road Clark Morrison Pavement Management Unit . What is the Difference Between Asphalt Surface Mixes? SF9.5A S9.5B S9.5C ... Mix Type 20 Year Loading (Million ESALS) Liquid AC SF9.5A Less than 0.3 PG 64-22 S9.5B Less than 3 PG 64-22 S9.5C 3 to 30 PG 70-22

Asphalt Mixtures Calculator - Vulcan Materials Company

Asphalt Mixtures Calculator. Enter the width, length and thickness, then hit the "Calculate" button to calculate your estimate. You may also revise the default density value of 145 lbs/cubic ft. Actual densities may vary depending on the components of the mix.

Hot Mix Asphalt | Asphalt Calculator | Calculate Aggregate ...

Overview Hot mix asphalt (HMA) pavement refers to the bound layers of a flexible pavement structure. Asphalt pavement material is a precisely engineered product composed of about 95 percent stone, sand, and gravel by weight, and about 5 percent asphalt cement, a petroleum product. Asphalt cement acts as the glue to hold the pavement together. Our HMA is mixed at our asphalt production ...

SECTION 334 SUPERPAVE ASPHALT CONCRETE 334-1 …

substitute a Type SP mix one traffic level higher than the traffic level specified in the Contract, at no cost to the Department. Where Type S Asphalt Concrete is specified in the Contract, if approved by the Engineer, the equivalent fine Type SP Asphalt Concrete mixture (Traffic Level 4) may be selected as an

AASHTO Pavement Thickness Design Guide

b. Load transfer coefficients for jointed and continuous reinforced pavements. The one item which distinguishes concrete pavement, is the type of joint used to control cracking and whether or not steel dowels are used in the joint for load transfer. Each design provides a

What Are The Different Types Of Asphalt Pavement?

5 Different Types of Asphalt Pavement #1: Hot Mix Asphalt. Hot mix asphalt is considered the most effective choice for driveways because it produces a strong & durable surface that is easy to repair and maintain. Hot mix asphalt consists of a combination of 95% stone, gravel, or sand that is held together by asphalt cement, a product of crude oil.

STANDARD CONSTRUCTION SPECIFICATIONS FOR ASPHALT …

to make check tests of the asphalt received on the Project site, and if the asphalt is not in accordance with the certified analysis, he may reject the material. The asphalt required by these Specifications shall conform to the requirements of The Asphalt Institute for the type and grade shown below: Asphalt for Seal Coating CRS-2 or CRS-2P

Understanding the differences between hot mix asphalt and ...

This type of asphalt is the most commonly used asphalt type in the United States for highways, interstates and roads due to its flexibility, weather resistance and ability to repel water. Hot mix asphalt is used when the outside air temperature is above 40 degrees, due to its propensity for rapid cooling.

Section 5: Surface Test Type B for Concrete and Hot-Mix ...

Surface Test Type B is the default for the final riding surface of travel lanes with the exceptions noted in Section 5 above. The ride quality specification for concrete and hot-mix asphalt surfaces includes incentives and disincentives based on the contractor's performance in constructing a smooth surface.

Three Hot Mix Asphalt Types

Due to the process of production, this asphalt mix is more expensive than regular dense-graded mixes. Its design is based on higher asphalt content, modified asphalt binder, and fibers. This asphalt type has been used since the 1980s and can be used in …

General Information for Hot Mix Asphalt Operations

At Graniterock, all of our hot mix aggregates are crushed and thus qualify as for producing Type A asphalt hot mix. Type A has a Los Angeles Rattles Specification of 10% material breakdown at 100 revolutions and 45% at 500 revolutions. The Type B Specification has only a Specification for 50% breakdown at 500 revolutions.