Bituminous Mixing Plant Rap

Asphalt Concrete Plant Inspection

Recycled Asphalt Pavement (RAP) - Old asphalt concrete pavements that have been removed from an existing roadway and stockpiled. During production the RAP is crushed, screened and proportioned with heated virgin aggregates, hot asphalt binder and then mixed in an asphalt plant. Batch plant and continuous mixing plants handle RAP in

State of the Practice for Use of RAP in Hot-mix Asphalt

Dec 28, 2000 · The key to producing a homogenous RAP product from a “composite” pile is to first blend the RAP thoroughly with a front-end loader or bulldozer and then to down-size the top stone size in the RAP in the crushing operation to one smaller than the top-size in the hot-mix being produced (e.g., 16 mm for a 19-mm top-size mix).

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Laboratory Compaction Study and Mechanical Performance

Jun 21, 2019 · The HWMRA 100%RAP mix production process in the laboratory consisted of mold heating at 85 °C, recycled RAP material (0/5 and 5/25 mm) at 100 °C, adding 2.5% emulsified bitumen (50/70 dmm) at 65 °C, mixture compaction temperature within the range of 70–80 °C, and a prefixed compaction energy depending on the compaction method to be used.

Reclaimed Asphalt Pavement (RAP) in Asphalt Mixtures: State

Reclaimed asphalt pavement (RAP) is a useful alternative to virgin materials because it reduces the need to use virgin aggregate, which is a scarce commodity in some areas of the United States. It also reduces the amount of costly new asphalt binder required in the production of asphalt paving mixtures.

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BG Series Modular Batch Plants - Astec, Inc

With the Astec BG 1800 Modular Batch Plant, Reclaimed Asphalt Pavement (RAP) can be incorporated into mix via the dryer drum or through the mixer unit. When added via the dryer drum, the RAP is added to the aggregate in the drum through a RAP collar. When added via the mixer, RAP is fed into a surge hopper on the batching tower. Rap Feeder Bins

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401.6.9 RAP Asphalt Content. RAP shall be sampled from the RAP feeding system on the asphalt plant. Solvent extraction or binder ignition methods shall be used to determine RAP asphalt contents. If AASHTO T 308 is used to determine the asphalt content, the binder ignition oven shall be calibrated in accordance with MoDOT Test Method TM 77.


Asphalt Mixing Plants Australian Asphalt Pavement Association – 2010 5 RAP materials can retain a great deal of moisture and undercover storage can reduce subsequent heating and drying costs. 6.3 HOT RECYCLING IN BATCH PLANTS RAP is generally transferred via a cold feed bin and weigh hopper so that it enters the pugmill at ambient temperature.

460.3 Plant Inspection - Engineering_Policy_Guide

460.3 Plant Inspection. From Engineering_Policy_Guide. ... The plant inspector should also become familiar with the operation of the plant. Bituminous Mixing Plants guidance goes into more detail about plant equipment. Contents. ... If RAP is added to the mix in a drum-mix plant, it is introduced by its own cold-feed bin and gathering/charging ...

Design Procedure for Asphalt Mixes Containing Reclaimed

the volumetric design procedure. During the production of the asphalt mix, the binder present in the RAP and/or RAS will mix with the virgin asphalt binder to produce a final blended binder. The properties of the asphalt binder can be considerably different from those of virgin asphalt binder.

Hot Mix Asphalt Facilities: New Source Performance Standards

A Hot Mix Asphalt (HMA) plant can be constructed as a permanent plant, a skid-mounted (easily relocated) plant, or a portable plant. All plants can have Reclaimed Asphalt Pavement (RAP) processing capabilities. Virtually all plants being manufactured today have RAP processing capability.


Batch mix asphalt plants are well engineered to meet customer needs for high consistency mix quality and long term production requirements. They are readily containerized and easily transportable. Our ALB Series offers the very latest batch mix plant features including advanced features exclusively offered for high-volume producers.

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“Production Mix” means manufactured product at an asphalt plant. "RAP" means Reclaimed Asphalt Pavement. "SDS" means Safety Data Sheets. “Special Process” means the Contractor’s documented and demonstrated techniques to achieve the requirements of this Part. “Warm Mix Asphalt” (WMA) means Hot Mix Asphalt manufactured and compacted ...

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The Environmental Impact of Asphalt Plants

The majority of emissions at asphalt mixing facilities come from the combustion of fuel, such as natural gas, that are used to dry and heat the rock or aggregate and to keep the temperature of the asphalt hot. Most of the other potential emissions, such as the dust gener - The Environmental Impact of Asphalt Plants

Hot-Mix Asphalt Plant Operations

42 HOT-MIX ASPHALT PAVING HANDBOOK 2000 FIGURE 5-1 Typical HMA batch plant. into the pugmill, and the wet-mix time begins. The mix­ ing time for blending of the asphalt cement with the ag­ gregate should be no more than that needed to com­ pletely coat the aggregate particles with a thin film of the asphalt cement material—usually in the ...


MARSHALL MIX DESIGN METHOD FOR ASPHALTIC CONCRETE WITH RECLAIMED ASPHALT PAVEMENT (RAP) (An Arizona Method) 1. SCOPE . 1.1 This method is used to design Asphaltic Concrete mixes with Reclaimed Asphalt Pavement (RAP) using 4-inch diameter Marshall apparatus. 1.2 This test method involves hazardous material, operations, and equipment.


QUALITY CONTROL AND QUALITY ASSURANCE PROCEDURES AND RESPONSIBILITIES FOR ASPHALT PLANT MIX PRODUCTION . 1. Scope . 1.1 This procedure outlines the Contractor ’s and the Alabama Department of Transportation’s (ALDOT) responsibilities during the production and lab testing of asphalt plant mix for ALDOT projects.

Utilization of Recycled Asphalt Concrete with Warm Mix

Jan 09, 2015 · The use of reclaimed asphalt pavement (RAP) provides an economic method for asphalt construction (cold recycled or hot mix asphalt) . RAP contains both aggregates and bitumen, and hence the using of RAP saves natural resources, money as well as it is eco friendly . Over the years recycling has become one of the most desirable pavement ...

Reclaimed Asphalt Pavement - User Guideline

RAP aggregates usually can satisfy the requirements of ASTM D692 "Coarse Aggregates for Bituminous Pavement Mixtures" and ASTM D1073 "Fine Aggregate for Bituminous Pavement Mixtures." (14,15) Asphalt Content and Properties : The asphalt content of most old pavements will comprise approximately 3 to 7 percent by weight and 10 to 20 …

Characterization of Reclaimed Asphalt Pavement (RAP)

Characterization of Reclaimed Asphalt Pavement (RAP) for Use in Bituminous Road Construction Author links open overlay panel T.Anil Pradyumna a Abhishek Mittal a b P.K. Jain Dr a c Show more

RAP Management | Sustainable Pavement Materials Manufacturer

RAP Management is a Columbus, OH paving materials plant producing durable, precisely manufactured asphalt products made from Recycled Asphalt Product. We lower the environmental footprint of infrastructure, at a cost savings to the end user.

Specification for asphaltic concrete TNZ M/10

3.11 Reclaimed Asphalt Pavement (RAP) Reclaimed asphalt Pavement (RAP) is material comprising old asphalt that has been processed by crushing and/or screening to produce a free flowing and consistent product. 3.12 Maximum size The maximum size of a mix is the sieve size at which 100% of the aggregate passes 4. MATERIALS 4.1 Testing

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Between them Parker and Phoenix boast one of the most comprehensive ranges of asphalt batch mixing plants and continuous parallel drum mix plants anywhere in the world, offering a choice of configurations with output capacity ranging from 4 to 400 tonnes per hour.

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RAP Asphalt

Most of these processing facilities are located proximal to the hot mix asphalt plant sites where RAP is either sold or used as a raw material for the production of recycled hot mix asphalt pavement. Material Properties. The properties of RAP mainly depend on the properties of the constituent materials and also the type of asphalt concrete mix.


Bituminous Paving Mixtures. MS-2 "Mix Design Methods for Asphalt Concrete and Other Hot Mix Types ," and Superpave Series No.2 (SP-2) "Superpave Mix Design" provide in-depth procedures for preparing HMA using RAP and/or RAS for mix design and the determination of a job mix formula (JMF). C. APPARATUS 1.


11 PLANT MIX BITUMINOUS BASE AND PAVEMENT . 11.1 GENERAL . 11.1.1 Description. This work shall consist of a bituminous mixture placed, spread, and compacted as shown on the plans, or as directed by the Engineer. The Contractor shall be responsible for Quality Control (QC) of the bituminous mixture, including the design and control

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