WIRTGEN: Key impact of cold milling machines on road rehabilitation quality

WIRTGEN: Key impact of cold milling machines on road rehabilitation quality

Wirtgen offers new solutions founded on practical know-how and core competencies in leveling, control and cutting edge technology

Cold milling is one of the first measures taken when a roadway or traffic area needs to be rehabilitated. The condition of the milled surface has a key impact on the quality of the new surface courses, their service qualities, and on the economical and efficient execution of the other construction measures. An evenly milled surface, true to line and level, is a crucial factor when it comes to paving surface courses of uniform thickness and avoiding costly correction measures in the form of asphalt leveling courses.

Market-driven innovations for all applications
Wirtgen offers the most extensive line-up of cold milling machines in the industry, with milling widths of 14 mm to 4.40 m. Customers can choose from over 30 different machine types, each also available with a variety of milling widths. The lower performance class starts with the small 45-kW milling machines and extends through compact machines with engine outputs between 257 kW and 298 kW, to large milling machines in the upper performance class with power reserves of up to 753 kW. The high level of customer-oriented design expertise guarantees market-driven innovations. The new solutions developed at the brand headquarters in Windhagen are founded on practical know-how and core competencies in leveling, control and cutting technology.

Always on the level
One of the decisive factors in milling a surface true to line and level is precision leveling. The purpose of leveling is to regulate the milling depth and slope automatically and as precisely as possible based on a reference line. In the field, it has become a standard practice to copy an existing surface by scanning a reference line.

But teamed with a wide range of sensors, the Wirtgen Multiplex leveling system can do much more than simple copying. Three sensors on each side of the machine scan the height at wide intervals along the same reference line. The automatic leveling system averages the three measurements to create a perfectly even milled surface, while meeting the target milling depth. This is a highly effective way of leveling out longitudinal undulations. What is more, defined surface profiles can be created, such as specified cross slopes or crowns.

Completely new surface profiles can be created by means of 3D milling. A new digital surface profile generated on the computer can be transferred directly to the Wirtgen cold milling machine using 3D leveling systems. Increased quality and cost-effectiveness are major benefits offered by 3D milling technology.

WIRTGEN: Combo Cutter

Milling layers separately, recycling economically
The progressive automation of technical processes, in particular, plays a key role in optimizing the milling result. To achieve optimum results, the leveling parameters for the respective machine are saved, linked to the LEVEL PRO automatic leveling system and retrieved during the working process. Nowadays, the widest variety of pavement layers are removed and separated in highly selective processes. The removal of problematic construction materials is possible, as is the standard separation of premium-quality surface courses with a high bitumen content, or the removal of road markings prior to the actual separate milling of the asphalt courses. The surface, binder and base courses can be returned separately to the material cycle, increasing the sustainability of RAP recycling.

Selective milling does not entail significant time disadvantages. Due to the shallower milling depth, the cold milling machines work more quickly when removing the individual layers than when removing the complete pavement at maximum milling depth in a single pass. Milling off surfaces in two or three layers can sometimes be just as fast – in some cases even faster – than complete pavement removal, depending on the type of machine and pavement and on ambient conditions. Modern cold milling machines also have been specifically tuned to typical selective milling.

WIRTGEN: W50Ri

Cutting edge technology enabling wide range of applications
The powerful “heart” of the cold milling machine – the milling drum assembly with all the cutting edge technology components – also has a critical bearing on the quality, cost and performance of the milling process. Here too, as technology leader, Wirtgen is continually developing cost-efficient solutions. Different milling drums support a wide range of milling applications on different road surfaces.

The standard milling drums, for example, offer tool spacings of 12 mm, 15 mm or 18 mm. Fine milling drums usually have a tool spacing of 8 mm; in micro-fine milling drums the tooling space is 6 mm. The ECO Cutter milling drums developed by Wirtgen are designed for maximum milling output. They can even mill extremely hard materials such as concrete or rock cost-efficiently.

Cold milling machines are also frequently used to dig trenches for pipelaying, or, when fitted with a deep milling unit and narrow cutting wheel, to mill slots. In short, the range of applications is immense.

WIRTGEN: W210

Precise specification of required quality
“Modern cold milling machines have a significant influence on the quality and cost-effectiveness of the overall rehabilitation measure,” explains Bernd Holl, Product Manager for Cold Milling Machines at Wirtgen GmbH. The possibilities offered by cold milling are now also gaining recognition from public contracting authorities, which means that new tender documents are now required. Throughout Europe, public authorities and milling service providers, milling associations and manufacturers of cold milling machines are currently collaborating on the formulation of new tender documents for cold milling.

“Precise details in tender documents enable the milling companies to tailor their bids to meet the requirements. Key details include, for example, the precise milling depth, the number of manholes and road fittings, as well as the number of individual milling operations. The more precise the invitation to tender, the more binding the bids submitted by milling service providers,” says Holl.

NBM&CW November 2019

Click Here
To Know More / Contact The Manufacturer
Please provide your details we will contact you as soon as possible
Please let us know your name.
Invalid Input
Please let us know your Designation.
Invalid Input
Please let us know your City.
Please let us know your State.
Please let us know your Country.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.

WIRTGEN GROUP: VÖGELE’s WITOS Paving Plus

Digital planning, dynamic control, sustainable improvement – the demands on road construction projects are on the rise all over the world. A pilot project before the gates of Stuttgart now illustrates the form that the job site Read More ...

Atlas Copco launches PowerCare and PowerHub mobile apps in India for quick customer service

Portable air compressor service is now living the digital life. In today’s digital world, dealers need an efficient tool at their fingertips to manage their service engineer schedule and performance, and when customers need a faster resolution Read More ...

Ammann Compactors in operation at the 6-lane Purvanchal Expressway

Ammann ARS 121 compactors are handling soil work for a key section of the 354-km Purvanchal Expressway, currently the longest road construction project in India. The soil work is being completed by Regal Enterprises, a sub-contractor of G.R. Infra Read More ...

COMPACTORS: High-Tech Solutions Driving Industry

Technical advancements and upgradations in compactors are bringing higher productivity and ensuring the desired quality surface mix. NBM Media gathers information on the latest high-tech solutions from manufacturers like Wirtgen, CASE Read More ...

Wirtgen Group Introduces New Milling Tools For Soil Stabilization

Soil stabilization, a process widely used throughout the world, is the ideal solution for producing compactable soil with good paving properties from a sub-base with insufficient bearing capacity. In this context, companies need to be able to process Read More ...

CASE India: Compactor is Best Bet for Road Construction

Compactor is the prime equipment used in the Road construction. CASE India as an active player in the CE industry deploys its best in class offerings when it comes to roads and highways construction. It has consistently remained Read More ...

WIRTGEN GROUP: Wirtgen PERFORMANCE TRACKER automatically measures the milling performance

It is not uncommon for milling contractors to have to mill more than is specified in the RFP when carrying out a rehabilitation project. But how can the contractor bill the client on the basis of a transparent calculation when this Read More ...

Dynapac Construction Equipment: Long lasting, user-friendly solutions

Dynapac Construction Equipment showcased its innovative designs and new innovations along with its ground-breaking and high-tech digital solutions like Dyn@Lyzer, Dyn@Link, TruckAssist and SetAssist that helps to track machines Read More ...

Wirtgen India Rolls Out 5000th HAMM Compactor

The 5000th HAMM compactor was recently rolled out from WIRTGEN INDIA's Pune factory. Samuel Allen, Chairman and CEO, Deere & Company and Ramesh Palagiri, Manging Director & CEO WIRTGEN INDIA along with Read More ...

Wirtgen showcases half-meter milling machine, next-gen surface miner, mobile power feeder, new technologies

The new half-meter milling machine W55H is a premier machine for the Indian market. It is versatile, powerful, and a cold milling machine that can be relied upon to perform milling oprations in a cost efficient manner. The Read More ...

New compact batch mix plants from Speedcrafts

To tap the growing market for compact concrete batch mix plants, Eastern India based Speedcrafts displayed its new compact, 30 cum/hr concrete batch mix plant at bauma CONEXPO India that features the company's own Read More ...

Alltech to introduce higher capacity asphalt batch mix plants

In a bid to tap the emerging market for higher capacity asphalt batch mix plants, Gujarat-based Alltech will be introducing higher capacity 200 to 240 tph plants. At bauma CONEXPO India, the company present Read More ...

New Products from Wacker Neuson

The Wacker Neuson Group, a leading manufacturer of light and compact equipment for concrete and soil compaction, job site utilities and material handling applications with over 50 affiliates and 140 own sales Read More ...

Siddhivinayak Engineering showcases Road Construction Equipment

Started in 2010 at Mehsana, Gujarat, Siddhivinayak Engineering Company has now established itself as a reliable manufacturer, supplier and exporter of Construction Equipment and related machines for road building Read More ...

Volvo CE demonstrates infrastructure strength with line-up of powerful machines

Volvo Construction Equipment (Volvo CE) introduced the G-Series L90Gz wheel loader and the DD100B double drum asphalt compactor during bauma Conexpo 2018. "With infrastructure developments increasing Read More ...

LiuGong India launches a new-gen Motor Grader and Wheel Loader; makes India its export hub

LiuGong India, a 100% subsidiary of China-based Guangxi LiuGong, launched 2 new products: a new-gen Motor Grader CLG4180D and Wheel Loader CLG 848H. It also showcased its complete range of Wheel Loaders Read More ...
NBM&CW

New Building Material & Construction World

New Building Material & Construction World
MGS Architecture

Modern Green Structures & Architecture

Modern Green Structures & Architecture
L&ST

Lifting & Specialized Transport

Lifting & Specialized Transport
II&TW

Indian Infrastructure & Tenders Week

Indian Infrastructure & Tenders Week