Compaction of Hot Mix Asphalt Concrete
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Compaction of Hot Mix Asphalt Concrete.

Compacting Hot Mix Asphalt Pavements: Part I Roads Bridges

Dec 28, 2000  The compaction process causes the asphalt-concrete mix to be compressed and its volume reduced. As the density of the hot-mix asphalt material increases, the air-void content of the mix decreases (they are inversely proportional to each other). Properly designed, a HMA mix should have an air-void content in the range of 3% to 5%.

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Mixing and Compaction Temperatures for Hot Mix Asphalt ...

A research study was undertaken to determine the shear rate during compaction so that the effect of this parameter could be included during viscosity measurements. The use of practical shear rate results in reasonable mixing and compaction temperatures for hot mix asphalt design and construction with modified asphalt binders.

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Hot-Mix Asphalt Laydown and Compaction

Hot-Mix Asphalt Laydown and Compaction . 9727-13/Sec13 12/20/00 17:43 Page 114. 9727-13/Sec13 12/20/00 17:43 Page 115. SECTION. 13 . Mix Delivery. The purpose of the haul vehicle is to transport the asphalt mixture from the asphalt plant to the paver. This must

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MIXING AND COMPACTION TEMPERATURES FOR HOT MIX

MIXING AND COMPACTION TEMPERATURES FOR HOT MIX ASPHALT CONCRETE According to Superpave mixture design, gyratory specimens are mixed and compacted at equiviscous binder temperatures corresponding to viscosities of 0.17 and 0.28 Pa*s, respectively.

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How to Compact Asphalt Pavements For Construction Pros

May 09, 2016  Asphalt concrete mixtures cool quickly so it’s important to compact while the mix is hot. Typically, asphalt comes out of the plant at about 300° F. At that temperature, it

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Mixing and Compaction Temperatures for Hot Mix Asphalt ...

A research study was undertaken to determine the shear rate during compaction so that the effect of this parameter could be included during viscosity measurements. The use of practical shear rate results in reasonable mixing and compaction temperatures for hot mix asphalt design and construction with modified asphalt binders.

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MIXING AND COMPACTION TEMPERATURES FOR HOT MIX ASPHALT ...

MIXING AND COMPACTION TEMPERATURES FOR HOT MIX ASPHALT CONCRETE. According to Superpave mixture design, gyratory specimens are mixed and compacted at equiviscous binder temperatures corresponding to viscosities of 0.17 and 0.28 Pa*s, respectively. These were the values previously used in the Marshal mix design method to determine the mixing and ...

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INTELLIGENT COMPACTION TECHNOLOGY FOR HOT MIX

INTELLIGENT COMPACTION TECHNOLOGY FOR HOT MIX ASPHALT BITUMINOUS CONCRETE APPLICATIONS **From Castleton-West Rutland/Castleton AC STP 2705(1)/2908(1)/2909(1) xx. DESCRIPTION. This work shall consist of the constructing Hot Mix Asphalt (HMA) utilizing Intelligent Compaction (IC) rollers at the

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Compacting Hot-Mix Asphalt Pavements: Part II Roads ...

Dec 28, 2000  Editor's note: This is the second installment of a two-part series on asphalt compaction.In the August issue, Scherocman, a consulting engineer in pavement design and construction located in Cincinnati, discussed the importance of compaction and the relationship between density and the air-void content of hot-mix asphalt (HMA) pavement.For an HMA to perform well

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How-to-Guide for Asphalt Pavement Compaction

Asphalt concrete mixtures cool quickly so it’s important to compact while the mix is hot. Typically, asphalt comes out of the plant at about 300° F. At that temperature, it is relatively soft and is readily compacted. As it cools, it firms up and compaction becomes increasingly difficult. “The three most important factors when

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Compaction – Pavement Interactive

Placement of Asphalt Concrete Mixtures. Placement and Compaction of Asphalt Mixtures, F.T. Wagner, Ed. ASTM Special Technical Publication 829. American Society for Testing and Materials. Philadelphia, PA. pp. 3-27.↵ Transportation Research Board (TRB). (2000). Hot-Mix Asphalt Paving Handbook 2000. Transportation Research Board, National ...

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Permeability of hot mix asphalt concrete as affected by ...

the permeability of hot mix asphalt concrete. Also, information regarding how binder content affects compaction and rutting resistance will be documented. Recommendations can be formulated to change West Virginia’s specifications with this information. 1.4 SCOPE AND LIMITATIONS

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ASPHALTIC CONCRETE Description

ASPHALTIC CONCRETE Description ADOT has developed a wide variety of hot mix asphaltic concrete (AC) specifications. There are dense graded hot mixes (AC and ARAC) verses open graded hot mixes (ACFC and ARACFC). There are hot mixes (AC and ACFC) that use asphalt cement verses hot mixes that use asphalt-rubber (ARAC and ARACFC) for the binder.

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Factors affecting asphalt compaction Asphalt magazine

The goal in compacting an asphalt mix is to produce a smooth, stable and durable asphalt pavement. Understanding the factors affecting compaction is an important step in achieving this goal. Jim Scherocman is a consulting engineer specializing in asphalt pavement design and construction.

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Attachment 9 Bituminous Concrete Hot Mix Asphalt

SECTION 1: HOT MIX ASPHALT – (SPECIFIC CLAUSES) 1.1 Material Descriptions The following are the material descriptions of Superpave HMA items that may be included in this contract: Materials Designation Description 402.017903 Truing Leveling F9, 70 Series Compaction 402.018903 Truing Leveling F9, 80 Series Compaction

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Asphalt Pavement Thickness and Mix Design - Asphalt Institute

Mix temperature is dependent on the grade of asphalt used in the mix. Less viscous the asphalt requires lower the temperatures, while more viscous asphalt requires higher temperatures. At the start of a mix design project, target temperatures are specified for proper mixing and compaction.

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Evaluating Gyratory Compaction Characteristics of Unbound ...

The gyratory compactor adopted in this study is commonly used for compacting hot mix asphalt, as illustrated in Figure 3. It has the following main technical specifications: calibrated internal angle of 1.16° and rotational speed of 30 rpm. The diameter of the specimen is 150 mm.

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Asphalt concrete - Wikipedia

Asphalt concrete (commonly called asphalt, blacktop, or pavement in North America, and tarmac, bitumen macadam, or rolled asphalt in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. Asphalt mixtures have been used in pavement construction since the beginning of the twentieth century.

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Compacting Bituminous Specimens Using the Superpave ...

COMPACTING BITUMINOUS SPECIMENS USING THE SUPERPAVE GYRATORY COMPACTOR (SGC) TXDOT DESIGNATION: TEX-241-F MATERIALS AND TESTS DIVISION 6 – 7 EFFECTIVE DATE: JULY 2019-JUNE 2021 Note 10 —When the mixture appears dry and lacking asphalt, lower the N des value to increase the optimum asphalt content of the mixture. 8.1.2 Following oven curing,

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INTELLIGENT COMPACTION TECHNOLOGY FOR HOT MIX

INTELLIGENT COMPACTION TECHNOLOGY FOR HOT MIX ASPHALT BITUMINOUS CONCRETE APPLICATIONS **From Castleton-West Rutland/Castleton AC STP 2705(1)/2908(1)/2909(1) xx. DESCRIPTION. This work shall consist of the constructing Hot Mix Asphalt (HMA) utilizing Intelligent Compaction (IC) rollers at the

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Mixing and Compaction Temperatures for Hot Mix Asphalt ...

Mixing and Compaction Temperatures for Hot Mix Asphalt Concrete. According to Superpave mixture design, gyratory specimens are mixed and compacted at equiviscous binder temperatures corresponding to viscosities of 0.17 and 0.28 Pa*s, respectively. These were the values previously used in the Marshal mix design method to determine the mixing and ...

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How-to-Guide for Asphalt Pavement Compaction

Asphalt concrete mixtures cool quickly so it’s important to compact while the mix is hot. Typically, asphalt comes out of the plant at about 300° F. At that temperature, it is relatively soft and is readily compacted. As it cools, it firms up and compaction becomes increasingly difficult. “The three most important factors when

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HOT MIX ASPHALT PAVEMENT DESIGN GUIDE

bituminous concrete,hot plant mix,asphalt concrete, blacktop or Superpave. Hot mix asphalt is composed of aggregate bound together into a solid mass by asphalt cement. The aggregates total ... the compaction level should be “N Design 50”or Level 1 for all applications except minor or principal arterial streets. The next two parameters go ...

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Quality Control Manual for Hot Mix Asphalt Using ...

The hot mix asphalt using statistical pay factor specifications were developed to emphasize quality control during the production and placement of material. Hot mix asphalt acceptance

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Attachment 9 Bituminous Concrete Hot Mix Asphalt

SECTION 1: HOT MIX ASPHALT – (SPECIFIC CLAUSES) 1.1 Material Descriptions The following are the material descriptions of Superpave HMA items that may be included in this contract: Materials Designation Description 402.017903 Truing Leveling F9, 70 Series Compaction 402.018903 Truing Leveling F9, 80 Series Compaction

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Welcome to Hot Mix Asphalt Concrete Page

About Hot Mix Asphalt Construction . Every year, State of California invests millions of dollars in construction of hot mixed asphalt (HMA), previously known as Asphalt Concrete (AC), pavement. Producing high quality HMA pavement requires a good partnership between Caltrans, the plant producing the HMA material and the contractor placing the HMA.

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Compaction Guide – Alberta Paving Ltd. – Asphalt Paving ...

A variation of traditional hot-mix asphalt is warm-mix asphalt. Warm-mix asphalt technology enables mix production and lay down at temperatures up to 40° C (100° F) lower than conventional hot-mix asphalt without sacrificing performance. In this manual, compaction of hot-mix asphalt and warm-mix asphalt designs is approached in the same manner.

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METHODOLOGY FOR DETERMINING MOST SUITABLE

volumetric properties of hot mix asphalt and Marshall indicators. Field investigations reveal that the Relative Compaction (RC) of the asphalt pavement layer is significantly affected by the temperature of asphalt mixture during compaction and is acceptable up to 110ºC. Also, asphalt

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ASTM D6925 - 15 Standard Test Method for Preparation and ...

1.1 This test method covers the compaction of asphalt mix into cylindrical specimens using the Superpave Gyratory Compactor (SGC). This standard also refers to the determination of the relative density of the compacted specimens at any point in the compaction process. Compacted specimens are suitable for volumetric, physical property, and mechanical testing.

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Consideration of hot mix asphalt thermal properties during ...

T1 - Consideration of hot mix asphalt thermal properties during compaction. AU - Chadbourn, Bruce A. AU - Luoma, James A. AU - Newcomb, David E. AU - Voller, Vaughan R. PY - 1996. Y1 - 1996. N2 - A computer program was developed at the University of Minnesota to predict asphalt concrete cooling times for road construction during adverse weather ...

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Consideration of Hot-Mix Asphalt Thermal Properties During ...

characteristics, an asphalt mix must be compacted to a specific range of density, and the time required for hot-mix asphalt to reach the proper compaction temperature to achieve this density decreases with an increased rate of cooling. Hot-mix asphalt compaction is generally begun as soon as the mix can support the roller weight.

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An Assessment of WSDOT’s Hot-Mix Asphalt Quality Control ...

compaction level (currently 91 percent of theoretical maximum density) is recommended to increase quality. In addition, a contractor quality control (QC) program is recommended for consideration by WSDOT. 17. KEY WORDS 18. DISTRIBUTION STATEMENT Specification, statistics, hot mix asphalt, HMA, asphalt concrete, pay factor, precision, Superpave,

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Evaluating Gyratory Compaction Characteristics of Unbound ...

The gyratory compactor adopted in this study is commonly used for compacting hot mix asphalt, as illustrated in Figure 3. It has the following main technical specifications: calibrated internal angle of 1.16° and rotational speed of 30 rpm. The diameter of the specimen is 150 mm.

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