Wirtgen Cold Recycler 2200 CR/ 3800 CR
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A WIRTGEN GROUP COMPANY

Cold in-place recycling 02 03 Economical road rehabilitation The in-situ cold recycling process is simple yet sophisti cated: the milling drum – the heart of the 2200 CR / 3800 CR – effectively granulates the existing asphalt pavement at a depth of up to 20 cm. The granulated material is then homogeneously mixed with injected binding agents and water in the machine’s heavy-duty milling and mixing chamber to create a new mix. The newly produced mix is then deposited between the rear crawler track units via a system of baffl e plates. The spreading auger spreads the material uniformly across...

1. 2200 CR with integrated Vögele screed > old recycling of 100  asphalt layer to a depth C % of 20 cm at a working width of 2.2 m > old recycling of asphalt layer plus base C m aterial to a depth of 20 cm at a working width of 2.2 m > ypical binding agents: cement, emulsion and T foamed bitumen > ompact recycling train with integrated screed C (especially suitable for urban job sites under traffic) 2. 3800 CR Downcut with integrated Vögele screed > old recycling of 100% asphalt layer to a depth C of 15 cm at a working width of 3.8 m > ecycling pavements seamlessly across the R full width...

PROJECT DATA Recycling width Recycling depth Percentage foamed bitumen Percentage added water Average working speed Jamieson Avenue, Los Angeles / USA First recycling width 2.2 m x 10 cm depth: all nozzles open on foam spray bar to cover width of cut. Jamieson Avenue in the North West section of Los Angeles: extensive alligator cracking with associated base failure. The street is the first location for the city’s urban street cold in-place recycling program. The alternative to cold inplace recycling on this type of street would be full reconstruction, including excavating and hauling off...

Heida Road, Anshan / China The Shenyang San Xing Group is a strong promoter of the cold recycling technology in Northern China and commissioned the 2200 CR and the slurry mixer WM 1000 for a construction project. The project consisted of two sections in section G 202 of Heida road. The first section was recycled by using cement, and for the second section foamed bitumen and cement were introduced in the cold recycling process. The advantage of this process is that the existing pavement structure can be milled up to a depth of 20 cm, mixed with binders and precompacted in a single pass. hot...

Road rehabilitation with cement, Thailand Cold recycling with cement – Wirtgen cold recycling 2200 CR pushes Streumaster cement spreader SW 16 MC. For over 10 years the cold in-place recycling process with cement has been a well-established procedure for road rehabilitation in Thailand and has achieved high levels of success. The process is designed for the rehabilitation of highly distressed pavements (asphalt and asphalt / base) with the Wirtgen cold recycler 2200 CR using cement as a binding agent. Exact application rates of cement are achieved using the latest technology, the Wirtgen...

PROJECT DATA Recycling width Recycling depth Percentage cement ■■ Percentage foamed bitumen Average working speed Production rate Rossi Lane, City of Gilroy / USA Rossi Lane is an industrial road varying in width from 9 m to 12 m. The pavement distress showed oxidization and extensive alligator cracking, with some areas of local patching. The rehabilitation method chosen for this project was cold in-place recycling, for the following reasons: lower cost, ability to keep the road open to local business traffic and speed of operation. The mix design and pavement investigation were carried out...

Interstate I-81, State of Virginia / USA PROJECT DATA Recycling width Recycling depth Percentage cement Percentage foamed bitumen Scope Traffic was guided past the construction site on the adjacent, previously recycled right-hand lane. As part of a total Interstate recycling project, the outer lane of Interstate 81 in Virginia was rehabilitated using cold in-place recycling. I-81 is one of the major North-South routes in eastern USA and runs through Virginia with two lanes in each direction. Therefore a fast rehabilitation process with minimum impact on traffic was required. As this 6-km...

Redmond Ave, San Jose / USA Redmond Avenue in San Jose, California, is a highly trafficked road used by cars, buses, vans and delivery trucks. The existing pavement was in need of repair and the cold in-place recycling process was selected as the preferred method, mainly to accommodate high traffic levels. The contractor used a Wirtgen 3800 CR with integrated Vögele screed and a recycling width of 3.8 m. Before recycling the pavement, 1% cement was prespread in front of the 3800 CR. windrowed the milled material between the 3800 CR front tracks. This material was introduced into the mixing...

Highway 15, Mason County / USA Optimal solution: the cold recycler 3800 CR fully complied with equipment specifications. In accordance with the Mason County bid documents, cold in-place recycling was the designated rehabilitation method for Highway 15. The existing pavement was highly distressed being some 40 years old, with extensive alligator cracking and areas of cold-mix patching. In addition, this section of the highway suffered high levels of transverse cracking which affected driving conditions. The contractor for this project selected the Wirtgen cold recycler 3800 CR with a working...

two sections, with a recycling depth of 75 mm for the first 3 km and a depth of 100 mm for the remaining 10 km. The emulsion content was calculated on a range of coarse to medium gradation at 2.25 % to 3.75 %. FUNCTION OF 3800 CR The 3800 CR pushed the bitumen tanker. Simultaneously the 3800 CR milled (by downcutting) the existing pavement to the required thickness, added the design percentage of emulsion proportional to the working speed and added metered amounts of compaction moisture to suit varying in-situ conditions (water taken from on-board tank). 1 | Operations caused only minimum...