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July 2010: Martec's AR2000 Super Recycler Goes to California, USA

Martec will be supplying its advanced technology and the AR2000 Super Recycler to Pavement Coatings Company (“PCC”), a local California based contractor that has been awarded a contract for resurfacing works to the state highway in Northern California.
“This work consists of rehabilitating an asphalt concrete (AC) pavement by heating, then milling the AC pavement surface, collection of the recycled AC pavement, mixing of the recycled asphalt pavement with a recycling agent and between 15 and 30 percent new hot mix asphalt (Corrective HMA), and laying the HIR Remix as a single, homogeneous mix”, as it is summarized in the Notice to Bidders and Special Provisions document published by the State of California Department of Transportation (CalTrans) that called for bids from local road construction and maintenance companies. Martec has welcomed an opportunity to partner with PCC on this project and is proud to be a supplier of choice of its hot in-place recycling train to PCC – a successful bidder selected by Caltrans.
PCC has opted for the AR2000 as the preferred equipment to be used on this milestone project in California due its unique capability to provide heating, soft milling of the surface course up to the required 2″ (50 mm) in depth, 100% re-use of the existing materials as recycled asphalt pavement (RAP) and complete remixing of the RAP with the corrective admix in-situ – to produce a high quality final hot mix asphalt to be placed back on the ground in one pass, continuous operation.

Existing pavement to recycle has  a challenging  'sandwich' nature:  polymer modified asphalt with a top layer of the open graded wearing course
Existing pavement to recycle has a challenging ‘sandwich’ nature: polymer modified asphalt with a top layer of the open graded wearing course.

Another key factor for choosing the AR2000 relates to a challenging nature of the existing pavement that is a combination of polymer modified asphalt (PMA) and open graded wearing course (OGWC): Martec’s AR2000 has demonstrated its ability to hot in-place recycle each of these types of pavement in the past. Hot in-place recycling of a mix of both PMA and OGWC will be the first time in the industry and unique for this project.
PCC is a general contractor for delivery of the overall HIR project and will be the operator of the AR2000 in California. PCC’s is also responsible for all associated works required for a successful completion of the HIR project, including road sampling and testing; pre-engineering study and mix design; and paving operation.

"Unveiling" the AR2000 stored in British Columbia, Canada for transporting to California, USA
“Unveiling” the AR2000 stored in British Columbia, Canada for transporting to California, USA

Martec supplies its AR2000 to PCC on a rental basis and provides training of PCC’s operating personnel that will be completed alongside a real project in progress in Northern British Columbia, Canada where Peter’s Bros. Construction Ltd., a long time owner and operator of the first AR2000, works on its third HIR project this summer.
Caltrans, PCC and Martec share the same goal set up for this showcase HIR project in California: establish sustainable maintenance of asphalt roads, reduce cost and preserve the environment.
For more details and/or to inquire about visiting the AR2000 operation in California, contact us as soon as possible: the project work is scheduled for completion by October 1, 2010.

March 2010: Hot In-place Recycling Project of the Year Award

Roads & Bridges ARRA Recycling Award

Peter’s Bros. Construction Ltd. – Martec’s long term customer and a partner in British Columbia, Canada – has received the prestigious 2009 Roads & Bridges/Asphalt Recycling and Reclaiming Association (ARRA) Award in Hot In-place Recycling category.

Peter’s Bros. has been the owner & operator of Martec’s AR2000 Super Recycler train for the past 15 years.  The company successfully recycled millions of square meters of deteriorated asphalt pavement in various regions of British Columbia but even for them a completion of a particular project last summer – the one that is now titled “HIR Project of the Year” – was a challenge.

Congratulations to Peter’s Bros. and gratitude to the ARRA for recognizing excellent results of the HIR technology application in British Columbia, Canada!


We are glad to share with our visitors an impressive description of Peter’s Bros. Construction Ltd.’s HIR Project of The Year as follows:

Location: Highway N16, Central British Columbia, Canada
Project Length (feet): 211,200 feet (40 miles, with the recycled area of approximately  2,691,000 sq feet)
% Recycled Asphalt Pavement (RAP) Used: 100
Milling depth of cut (inches): 2
Cost savings by recycling ($): US$1,719,690 (CAN$2,000,000.00) over conventional Mill & Fill
Recycling Type: Hot In-Place Recycling
Start Date: June 1, 2008
Finish Date: August 12, 2008
Project challenges: 25 year old road; alligated, very poor old asphalt;  20%-25% admix was required; mountainous region; remote location;  rainy and cold days during the project execution, with average minimum ambient temperature ranging from 3.8°C (38.8°F) in June to  5.7°C (42.3°F) in August.


Martec’s Answers on Frequently Asked Questions Related to HIR Suitability

What is the typical Hot-In-Place Asphalt Recycling road candidate?

    Alligator cracking
    longitudinal cracking
    low spots
    the requirement for profiling

These are good candidates as long as the road has sound base and adequate drainage. A good candidate can be determined by the following:

    Visual observation
    Drill cores — check aggregate and oil content
    Review records to determine the type of materials that were previously used to make original road

What is not an ideal candidate for Hot-In-Place Asphalt Recycling?

    Excessive amounts of sub base failure
    Thickness of less than 2” (50 mm)
    Wide or excessively deep cracking
    Poor or soft aggregates
    Aggregates predominantly larger than ¾” (20 mm)
    Low oil content — less than 4% (although this can be compensated for)

Many recent projects that exhibited some of the above characteristics have been corrected with proper engineering and workmanship. Fix the excessive damage first!

Can Hot-In-Place Asphalt Recycling be used in cities where there are lots of turns, manholes, casting, water valves and curbs?

HIR used to be reserved for major highways, municipal roads and airports, but it is now being used more in the city. We provide minimal traffic delays and less congestion as typically only 1/5 of the asphalt trucks are required. With production rates as high as 1,400 sqm / hr we offer the perfect solution to a busy city.
Typically we accomplish 2 to 3 lane kilometers of rehabilitation work per day in the city. Our single lane process impresses the traveling public (which reflects well on the governments that chose this method).

Does the recycled road need to be overlaid?

No. The AR2000 produces asphalt of compressible or better quality than new asphalt although many of our competitors are forced to overlay their work due to the quality of asphalt produced by their machinery (typically due to age hardening of the bitumen caused by excessive heat or burning).

Does admix always have to be utilized?

Almost always. If the road has sunken or fallen 10% to 30% new asphalt is added to the recycled material to bring the road back up to grade. This creates a smoother road, and the road will have a higher load rating.

Can you recycle the road at night?

Yes, however production rates slow down because when the ambient air temperature is lower and much more care has to be taken with paving and compacting due to low light.

Does heating up the old asphalt in the road degrade the asphalt oil content?

By reheating the old oil in the road and adding a rejuvenating agent it will increase the quality of the old oil and in effect bring it back to life.

Do you have any other inquiries?

Please contact us.

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