graniterock workability of hot mix asphalt

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Graniterock: Workability Of Hot Mix Asphalt

The type of asphalt binder used in Hot Mix Asphalt (HMA) contributes to the workability and/or achievement of compaction. Binder type significantly affects the workability of mixes. Mixes containing stiffer binders, such as an AR 16000, are significantly less workable than mixes containing less stiff, unmodified binder for a given temperature.

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Graniterock: Hot Mix Asphalt

Hot Mix Asphalt. Graniterock materials have been used in the construction industry for over 100 years—an achievement unmatched by any other HMA producer. We produce highly stable and workable commercial mixes that perform for you in the field. Whether paving parking lots or plugging dig-outs, our mixes have plenty of fines that give the job ...

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Graniterock: Technical Reports

The Sasobit® additive, which is a product of Sasol Wax, is one of these technologies that allow the reduction of mixing and compaction temperature of hot mix asphalt. It was selected by the WMA task group of Graniterock for the trial section because of its minimal plant modification requirement and relatively low cost.

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Graniterock: General Information For Hot Mix Asphalt ...

At Graniterock, all of our hot mix aggregates are 100% 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.

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Graniterock: Asphaltic Concrete

Asphalt Segregation. Building Durable Longitudinal Joints. Chip Seals. Cold Pour Crack Filler. Cold Weather Asphaltic Concrete Compaction. Compaction of Tender Mixes. Fog Seal Emulsion. General Information for Hot Mix Asphalt Operations. GranitePatch™.

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Graniterock: Research Technical Services

Hot Mix Asphalt Designing HMA mixtures that meet Caltrans, FAA, or other agency requirements for all specified levels of quality. Reviewing specifications, developing project quality control plans, and providing Quality Control/Quality Assurance laboratory and field services to Graniterock Construction Division and other contractors ...

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WORKABILITY OF HOT MIX ASPHALT - Auburn University

WORKABILITY OF HOT MIX ASPHALT Jagan M. Gudimettla, L. Allen Cooley, Jr., and E. Ray Brown INTRODUCTION The term workability has been used to describe several properties related to the construction of hot mix asphalt (HMA). First, some have used this term to describe the ease with which HMA can be worked by hand after being placed on the roadway.

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Graniterock: Tender Asphalt Mixes - Causes and Cures

Mar 18, 2015  A“tender” asphalt mix usually refers to a mix that is difficult to compact. It may have a tendency to shove under the roller wheels and/ or leave longitudinal cracks at the edge of the steel drums. Either a lack of friction between particles or a lack of shear strength in the mix essentially causes tenderness. Both these problems can be the result of many factors, the most common of which ...

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Graniterock: Research Technical Services

Hot Mix Asphalt Designing HMA mixtures that meet Caltrans, FAA, or other agency requirements for all specified levels of quality. Reviewing specifications, developing project quality control plans, and providing Quality Control/Quality Assurance laboratory and field services to Graniterock Construction Division and other contractors ...

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NAPS 0108 C - assets.graniterockcdn

to 100° F below standard hot-mix temperatures of 300 to 350° F. Gone are the blue smoke, fumes, and odor that may be associated with hot mix. Stack gas emissions are even further reduced. Fuel consumption drops by 11 to 30 percent. Workability is improved, so compaction is easier, even with reclaimed asphalt pavement (RAP) in the mix. There ...

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Workability of Asphalt Binders at Mixing Temperatures for ...

Project title: Workability of Asphalt Binders at Mixing Temperatures for Hot and Warm Mix Asphalt 16. Abstract Conventional hot mix asphalt (HMA) is produced by heating the aggregate and the asphalt binder to elevated temperatures that are typically in the range of 150C to 160C. These temperatures ensure that the viscosity of the asphalt binder ...

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(PDF) Possibility of use of granite fines in asphalt pavements

The hot asphalt mix tures w ith granite fines don’t en sure the abilities to reach the same mechanica l properties as the hot asphalt mixture s with activated or non-activated limestone fines.

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Author: D. Jones

7. Warm-Mix Asphalt Study: Evaluation of Rubberized Hot- and Warm-Mix Asphalt with Respect to Binder Aging (UCPRC-RR-2013-02) 8. Warm-Mix Asphalt Study: Evaluation of Rubberized Hot- and Warm-Mix Asphalt with Respect to Emissions (UCPRC-RR-2013-03) 9. Warm-Mix Asphalt Study: Field Test Performance Evaluation (UCPRC-TM-2013-08) 10.

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The Development of Workability Measurement for Asphalt ...

Feb 09, 2013  user-friendly. Their work indicates that workability is an important element in obtaining the desired HMA’s smoothness and density within a compacted pavement, along with the fact that temperature, as well as the constituents in the mix influence the workability of Asphalt mix and that the compactibility of HMA is related to workability.

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Variability of rap binder mobilisation in hot mix asphalt ...

Mar 20, 2019  AASHTO T308 standard was followed to determine the binder contents of the RAP materials, which were found to be 5.4%, 5.7%, and 5% for RAP-1, RAP-2 and RAP-3, respectively. For all the mixtures with 15%, 30% and 50% RAP materials, a total binder content based on the binder content of the respective RAP was chosen.

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Toni Carroll - Director of Quality - Graniterock LinkedIn

Graniterock. Apr 2016 - Present5 years 4 months. Watsonville, California. -Direct and support the quality control programs for Graniterock's HMA, Concrete, Aggregates, and Cold-in-Place (CIR ...

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ABSTRACT - NCSU

Warm Mix Asphalt Technologies with Reclaimed Asphalt Pavement Material. (Under the direction of Dr. Akhtarhusein A. Tayebali). In this current world there is a need to use cleaner and more sustainable technologies. One such technology which might soon replace the conventional Hot Mix Asphalt technology is Warm

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Ryan Clark - Sydney, Nova Scotia, Canada Professional ...

Nov 17, 2015  Graniterock Company May 2000 - Apr 2002 2 years. Education ... was completed in 2009 on Route 10 near Albright's Corner, New Brunswick. The project compared traditional grade-bumped Hot Mix Asphalt (HMA) using PG 52-34 virgin asphalt to a section using a combination of Hypertherm Warm Mix Asphalt (WMA) and conventional PG 58-28 binder ...

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Looking to Aggregates to Improve Pavement Sustainability ...

The warm mix and hot mix materials provided similar performance. While this study focused on binder issues, the research advanced a method for determining the workability of loose hot mix based on deformation conducted at a fixed deformation rate. This can be used as a quality control test for RAP mixes and RAP materials.

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Evaluation of Specialized Hot Mix Asphalt Mixes for ...

Many state transportation agencies have begun exploring and implementing the use of specialized types of Hot Mix Asphalt (HMA) paving mixtures for their potential economic, performance and/or environmental benefits. The specialized asphalt mixture needs for Massachusetts were identified as expanded and increased use of

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Workability of Hot-Mix Asphalt - Jagan M. Gudimettla, L ...

Jan 01, 2004  The term "workability" has been used to describe several properties related to the construction of hot-mix asphalt (HMA). For this study, workability was defined as a property describing the ease with which HMA can be placed, worked by hand, and compacted. This definition provides a term that is applicable to movement of HMA through equipment ...

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STONE MASTIC ASPHALT

Workability 502.26.02 CONFORMING MIX DESIGN FOR STONE MASTIC ASPHALT 1. The conforming mix design described in this clause is for asphalt produced using granite aggregates from the Perth region. Perth mix only 2. The asphalt shall consist of a

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HOT MIX ASPHALT – McAsphalt

Hot mix asphalt (HMA) consists of a combination of aggregate uniformly mixed and coated with asphalt cement. To dry the aggregates and to obtain sufficient fluidity of asphalt cement for proper mixing and workability, both the aggregate and asphalt must be heated prior to mixing—hence the term “hot mix.”. Aggregates and asphalt are ...

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Quantifying Workability, Compactability, and Cohesion Gain ...

(hot mix asphalt) materials for use with cold recycled mixtures, specifically asphalt emulsion FDR and foamed asphalt FDR; 3. Use laboratory techniques to measure workability, compactability, and cohesion gain of asphalt emulsion CIR by quantifying effects of laboratory curing conditions on these

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DEVELOPMENT OF NEW ASPHALT TEST METHODS AT

• Workability of hot mix asphalt Prior to Superpave, the mixing and compaction temperatures of dense-graded HMA mixtures were established based on neat asphalt binder viscosities of 170 and 280 centistokes, respectively. This system performed satisfactorily and the mixtures generally did

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Development of high stability hot mix asphalt concrete ...

Dec 01, 2014  2.3. Production process. The high stability asphalt concrete is produced at hot mix asphalt plants by adding the additive to the mixer. The additive melts through heat exchange with the aggregates and mixes with the modified asphalt, forming a hybrid binder with synergistic effects.

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HOT-MIX ASPHALT PAVING MIXTURE - FRED WEBER, INC.

A hot-mix asphalt paving mixture includes the use of a hard, angular, non-carbonate ½″ minus igneous crushed rock, washed rounded No. 100 sieve silica sand particles, ½″ minus recycled asphalt pavement particles, and a performance-graded bituminous liquid asphalt binder, thereby to produce an environmentally-friendly hot asphalt mixture that is laid with minimal compaction effort, and ...

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Selecting the correct materials Asphalt magazine

Remember, says Jones, hot mix asphalt is simply a combination of asphalt, aggregate and air (A+A+A = HMA.) Aggregate, which acts as the skeleton, provides skid resistance, stability and workability. The asphalt binder, which is the glue that binds the aggregate, provides

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aggregate.docx - CONSTRUCTION MATERIALS AND TESTING

, something to grip and this produces a stronger bond. The texture of the surface also plays a role in the workability of hot mix asphalt, how much asphalt is required for the hot mix and the water requirements in cases where portland cement concrete is being used. Strength and Elasticity: The strength of an aggregate is measured in terms of its ability to endure forces that may push or crush ...

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US9139733B2 - Cold mix asphalt aggregate paving material ...

US9139733B2 US13/751,688 US201313751688A US9139733B2 US 9139733 B2 US9139733 B2 US 9139733B2 US 201313751688 A US201313751688 A US 201313751688A US 9139733 B2 US9139733 B2 US 9139733B2 Authority US United States Prior art keywords aggregate asphalt paving emulsion cold mix Prior art date 2012-01-27 Legal status (The legal status is an assumption and is not a legal

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NCAT COMPLETES EVALUATION OF RELATIONSHIPS OF

WORKABILITY OF HOT MIX ASPHALT (Guddimettla, Cooley, and Brown) One of the important issues in the HMA industry is the compactibility of mixes. This concern has arisen from the increased use of coarse-graded mixes and/or the increased use of polymer-modified binders, which

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granite as an alernate for fine aggregate

Many Graniterock locations provide a full range of construction coarse and fine aggregates. Whether you need aggregate, ready-mix concrete, hot mix asphalt or building materials for a new building site or your next home improvement project, get to know Graniterock.

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Differentiate between crushed and uncrushed aggregate

General Information for Hot Mix Asphalt Operations - Graniterock ... The difference between the two binder grades is the viscosity. AR 8000 grade ... The angular rock particles in a crushed aggregate results in a higher stability hot mix than those hot mixes containing uncrushed round gravel type aggregates. More details » Get Price

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Ternary Blend Concrete with Reclaimed Asphalt Pavement

Aug 01, 2018  blend concrete mix (containing cement, slag, and fly ash) with various levels of fractionated recycled asphalt pavement (FRAP). In the laboratory three levels of FRAP as a replacement of coarse aggregate were evaluated: 20 percent, 35 percent, and 50 percent replacement. The results of the laboratory investigation showed that up to 50

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