asphalt mix design what means number k


ROADWAY DESIGN MANUAL PART II REV. DATE 07/18/18 REV. NO. 08-16 PAVEMENT SCHEDULE (continued) 6-1D The %, type of Asphalt Binder and rate to be used for calculation of quantities are as follows: Mix Type % Asphalt Binder Asphalt Binder Grade Rate (Lbs/SY/in) Friction OGAFC, TYPE FC-1 MODIFIED 6.1 PG 76-22 70-90 Lbs/SY Surface

Properties Considered in Mix Design Superpave Mix Design Method

Voids filled with asphalt (VFA) are the void spaces that exist between the aggregate particles in the compacted paving HMA that are filled with binder. VFA is expressed as a percentage of the VMA that contains binder. Including the VFA requirement in a mix design helps prevent the design of HMA with marginally acceptable VMA.


It is almost impossible to separate and identify all the different molecules of asphalt, because the number of molecules with different chemical structure is extremely large". Asphalt may be confused with coal tar, which is a visually similar black, thermoplastic of .

Hot Mix Asphalts 101

Asphalt Rubber Applications • Asphalt rubber is the process of adding recycled, crumb rubber to hot mix asphalt (called dry process) or the asphalt binder (called wet process) to modify the final mixture • Difficult to use in dense-graded mixtures due to residual crumb rubber • Best used in gap-graded type mixtures (SMA and OGFC)

What is ESAL?

million ESALs will be designed as a “perpetual pavement” which essentially is full depth asphalt pavement design. Perpetual pavement consists of the following layers: subgrade, rich bottom layer (RBL), stiff rut resistant hot mix asphalt (HMA) base, a nd

Transverse Cracking of Asphalt Pavements

Transverse Cracking of Asphalt Pavements US. Department at Transportation Federal Highway Admlnlshallon '• Summary Report of a Cooperative Analysis by Teams from Iowa, Kansas, Nebraska North Dakota and Oklahoma Office of Research and Development

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Licence - Asphalt

or design capacity Approved premises production or design capacity 35 Asphalt manufacturing: premises on which hot or cold mix asphalt is produced using crushed or ground rock aggregates mixed with bituminous or asphaltic materials for use at place or premises other than those premises Not applicable 30,000 tonnes per year

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Equivalency Chart

traffic loads in entirely different ways. This means that the thickness design procedures for concrete and asphalt pavements are also different. The structural number concept has, however, been used to estimate concrete and asphalt pavement sections. The structural number of a particular pavement section is simply the summation of the layer


DESIGN OF HOT ROLLED ASPHALT BY THE MARSHALL METHOD. Hot rolled asphalt (HRA) wearing course mixtures are specified in BS 594 (1973) according to either the recipe method or the design method. In the design method binder content is based upon an optimum value determined for the asphalt mortar portion of the mix by means of the Marshall test ...

What is Marshall Mix Design for Bituminous Materials?

The Marshall Mix Design method was originally developed by Bruce Marshall of the Mississippi Highway Department in 1939. The main idea of the Marshall Mix Design method involves the selection of the asphalt binder content with a suitable density which satisfies minimum stability and range of flow values.

Asphalt repair, pothole repair made easy with EZ Street cold mix

EZ Street asphalt patch can be used in any season and any month to repair roads and pavement. Because EZ Street cold asphalt is permanent, patching crews don't have to make wasted trips filling the pothole first with a temporary cold patch and then returning

Stone Mastic Asphalt

SMA is best explained as two-component hot mix asphalt HMA which comprises a coarse aggregate skeleton derived from a gap-graded gradation and a high bitumen content mortar. Since 1960s, Stone Mastic Asphalt (SMA) pavement surfaces have been used ...

Pavement Layer - an overview

The mix design for each asphalt sublayer will then be performed. If the mix design fails the specifications, the thickness of asphalt layer may be adjusted and the mix design for the adjusted sublayers should be reconducted. The asphalt layer is considered as an unique parameter in the structural equation.

Asphalt Pavement Construction

Mix temperature will be dependent on the grade of asphalt used in the mix. The less viscous the asphalt, the lower the temperatures should be. The more viscous the asphalt, the higher the temperature can be. During mix design temperatures are specified for proper mixing and for compaction. These are good targets with which to start a project.

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How asphalt cement is made - material, used, processing

Asphalt paving mixes made with asphalt cement are usually prepared at an asphalt mixing facility. There are two types of asphalt mixes: hot-mix and cold-mix. Hot-mix asphalt (HMA) is more commonly used while cold-mix asphalt (generally mixes made with emulsified or cut-back asphalts) is usually used for light to medium traffic secondary roads ...


Aug 05, 2015 · SCOPE: In January 2013, NCHRP Report_752 Entitled: “Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement” was completed. NCAT (Randy West) was the PI on the project and he reported to the ETG during the Spring 2013 ETG meeting of its availability.

Evaluation of functional characteristics of laboratory mix design

1. Introduction Porous pavements consist of one or more layers of high porosity to provide one or more of the following functional benefits: lower traffic-generated noise , , , improved wet-weather pavement skid resistance , , , lower peak flow load of stormwater runoff , , …

Compaction of Hot Mix Asphalt Concrete

COMPACTION OF HOT MIX ASPHALT CONCRETE BY F. N. Finn and J. A. Epps RESEARCH REPORT 214-21 Engineering, Economy and Energy Considerations in Design, Construction and Materials 2-9-74-214 Sponsored by State Department of Highways and Public Transportation August 1980 Texas Transportation Institute

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Road Standards and Paving Standards

ASTM's road and paving standards provide the specifications and test methods pertinent to the material, physical, mechanical, performance, and application requirements of road surfaces and pavements.

Mix design practice (bituminous mix) ce 463

Aug 30, 2011 · MODIFIED HUBBARD-FIELD METHOD OF BITUMINOUS MIX DESIGN This method was developed by P.Hubbard and F.C. Field This method was in fact intended to design sheet bituminous mix It was later modified for the design of bituminous mixes having coarse aggregate size up to 19 mm 35.

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Why asphalt? - AIA The Asphalt Industry Alliance

Asphalt is the surfacing material for over 95% of all UK roads as well as for footpaths, playgrounds, cycle ways and car parks. Its inherent qualities of flexibility, efficiency of construction, ease of maintenance and value for money make it the number one choice with 20 million tonnes of asphalt produced each year in the UK.

Design of Overlay for Flexible Pavement

Design of Overlay (IRC) Design curves relating characteristic pavement deflection to the cumulative number of standard axles are to be used. The Deflection of the pavement after the corrections i.e., Characteristic Deflection is to be used for the design purposes. The design traffic in terms of cumulative standard

Warm Mix Asphalt Final Report

Mix Design WSDOT tested the Class ½ inch mix design using Superpave volumetric design procedures (WSDOT SOP 732 - Standard Operating Procedure for Superpave Volumetric Design for Hot-Mix Asphalt). The target air voids were 4.0 percent with a gyration level of 100. The job mix formula (JMF) resulting from the mix design is shown in Tables 3 and 4.


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