PM's Tunnel Concreting Train
The concreting train with electrically operated concrete pump, which is fed via a conveyor belt

A slab track is being laid in the tunnel section with two individual 6 km tunnels. The sleepers are embedded in concrete and can absorb the vibration caused by high-speed trains in a better way due to having an extremely flexible insert.

PM's Tunnel Concreting Train
A locomotive with the rail wagon shuttles between the concrete handover point and the concreting train
Maximum precision is required when the tracks are installed. The sleeper shoes that have been freshly embedded in the concrete must not be subjected to vibration. Even the slightest variations in the alignment of the tracks can result in the railway no longer complying with the original designs for high-speed travel.

The order for constructing the slab track in the Malmö city tunnel was placed with Rhomberg Bahntechnik GmbH. The objective was to find a solution for installing the concrete track bed over a distance of two times six kilometres without a major amount of vibration. The plan was to do the concreting at a speed of 15 – 20 m/h.

Railway engineering specialist Rhomberg (based in Bregenz in the Austrian Vorarlberg area) made contact with the representative of Austrian company Putzmeister, Hans Eibinger GmbH. Together with the Concrete Project Division department at the main Putzmeister plant in Aichtal, all of the parties involved collaborated to produce a solution for supplying a tunnel concreting train based on the patented installation solutions of Rhomberg Bahntechnik.

Comprehensive Planning

During the planning of the tunnel concreting train it had to be taken into consideration that the freshly embedded sleeper shoes could only bear a certain amount of load. Beginning with the setting speed of the concrete and the travel speed of the concreting train, it was calculated that a distance of 250 and 400 m had to be maintained between the concrete paving machine and the pump unit. The entire pipeline would therefore have to be made mobile. The pump unit consists of an electrically powered concrete pump and two mixing drums, whereby the first one would be used to supply the system with fresh concrete, and the second one would provide the concrete for ensuring that a continuous concreting cycle could be maintained.

Concreting train

PM's Tunnel Concreting Train PM's Tunnel Concreting Train
The patented concrete paving machine when embedding the sleeper shoe The main power supply is provided by a diesel unit with output of approx. 400 kW that is equipped with a soot particle filter for operating in the tunnel

The concreting train consists of various railway wagons on which all the necessary components for carrying out a continuous and smooth procedure are mounted (including the necessary cleaning and maintenance work). All systems are protected by an emergency power unit.

Pump and delivery line

The Putzmeister stationary concrete pump is on the third wagon, plus a small conveyor belt for feeding the concrete pump. In order to prevent the pump from drifting during the pumping procedure, the frame of the rail car is filled with concrete and the support legs of the pump are directly screwed to it. The pump can be operated using a cable-connected remote control during the pumping process. The concrete is transported from the pump to the concrete paver up to 400m away via a steel delivery line that is installed on special wagons. The maximum permitted concrete pressure of the delivery line is 130 bar. The delivery line has a diameter of 12 mm and a wall thickness of 7.1mm. Since the slab track in the Malmö city tunnel also has a long curve with a radius of 760m, the line has been adapted accordingly in order to be able to run on the patented alignment system made by Rhomberg Bahntechnik. Non-critical load transmission was a challenge during dimensioning.

Paving machine

The patented paving machine is located at the end of the delivery line and consists of an upstream working and transport platform and a hopper. The concrete is transported to the track bed via three special chutes. The concrete is pre-smoothed using skimming boxes and then compressed using vibrators.

Cleaning

Particular attention was also paid to having an environmental-friendly disposal and cleaning concept that meets the strict regulations in Sweden. In order to clean the delivery line with water, a media separating device must first be installed. This ensures that residual concrete and washing water do not mix. The residual concrete in the line can therefore still be laid in the track bed. The media separation system consists of the combination of sponge ball-soaked cement bags -sponge ball-wash-out pig-sponge ball.

Team success

It was possible to successfully deal with this complex project by means of close collaboration between participating project partners Rhomberg, Eibinger and Putzmeister. Not least the competent service engineers from Eibinger and their involvement, along with the efficient service contributed to the success of this new solution for supplying concrete.
Click Here
To Know More or to Contact the Manufacturer
Please let us know your name.
Invalid Input
Please let us know your Designation.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.
Our other Value-Added Services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Invalid Input
Invalid Input
Invalid Input
Schwing Stetter India has unveiled its state-of-the-art Self-loading Mixer – SLM 4600. It will cater to higher output requirements of concrete batching, mixing and placing in the urban development Segment. It is being rolled

Read more ...

MACONS, a leading manufacturer and supplier of world-class equipment for use in India and for the global construction markets, has introduced its latest MST series of Self Loading Concrete Mixer

Read more ...

Sicoma Mixers India has successfully implemented TUV SUD ISO Procedures for the scope of Manufacture and Sale of Concrete Mixers and Spare Parts. The company is now ISO certified for

Read more ...

The fusion design of the transit mixer as loader, mobile batching plant, and mixer, has positioned it as a unique product that owes its popularity to projects requiring small to medium volumes of concrete

Read more ...

AJAX Engineering, the world’s largest manufacturer of SLCMs, is now expanding its footprint to meet the growing demand from diversified construction segments such as roads, railways, energy, and irrigation. It has

Read more ...

MACONS, a leading manufacturer and supplier of world-class equipment for use in India and for the global construction markets, has introduced its latest MST series of Self Loading Concrete Mixer ‘MST-4’ which is

Read more ...

After a successful stint in the road construction equipment industry, Saumil Shah, one of the promoters of Kaushik Group, has taken a decision to diversify into the concrete equipment manufacturing segment

Read more ...

Apollo Carmix Equipments Ltd (a joint venture arising from the union of Carmix and Apollo Concrete Solutions in 2014), is the only manufacturer of front-loading truck mixers and is responsible for the sale of

Read more ...

The Nagdhunga tunnel construction project is the first road tunnel construction project in Nepal. It is being built with Japanese loan assistance of 16,636 billion yen. The project aims to improve the road condition

Read more ...

Concrete equipment is designed to do a lot of very intricate and precise tasks. Like all superior equipment, Putzmeister’s intelligent and sophisticated pumps and equipment need maintenance when lying idle

Read more ...

Putzmeister delivered its 1,000th Putzmeister Truck Mounted Boom Pump from its factory in Goa, this month. Putzmeister offers truck mounted pumps in 3 configurations: 36 meters (4 arm, Z fold), 42 meters (5 arm, RZ fold)

Read more ...

Safari announced the launch of its Safari MAX range of self-loading concrete mixers designed to reduce labour and time at construction sites. The main features of the machine include Four Wheel Drive, Reliable, High Performance

Read more ...

With an outdoor space of 3192 sq.m, AJAX was the 3rd largest company at Excon 2019, where it displayed 19 products of which 8 were new launches. The AJAX stall was inaugurated by Jagadish Bhat, MD & CEO. AJAX has always strived to

Read more ...

Putzmeister and Sany Concrete Solutions delighted customers and visitors with the expanded product range, live demos and the iconic Elephant Nights. The companies recently announced that the concrete sales and service teams

Read more ...

New product on display was the compact batching plant with sidewall conveyors, which can achieve a steep angle up to 50 degrees as compared to the 17-18 degree by conventional conveyors. It gives a 10% better output as compared

Read more ...

With its line-up of 22 new products, Schwing Stetter India aims to position itself as one of the most prominent infrastructure equipment partners in the country and an active participant across all Government projects to be announced

Read more ...

Schwing Stetter India, a leading concreting equipment manufacturer, has further strengthened its partnership with Mahindra Powerol, a business unit of the USD 20.7 billion Mahindra Group, with the launch of its new premium variant

Read more ...

Starting October 2019, Putzmeister and Sany are combining forces to bring enhanced Concrete Solutions and improved After-Sales coverage in India. The companies have brought together the concrete division sales and service

Read more ...

KYB-Conmat is honoured to join hands with the Nepal Reconstruction Authority for the prestigious Dharahara project. Also called Bhimsen Tower, this nine-storey, 61.88-metre-tall (203 ft) tower at the centre of Sundhara in Kathmandu, was built

Read more ...

AJAX participated at EARTHCON to showcase its products and create brand awareness to a well-defined CE target market. On display were the company’s newly developed products as well as upgraded models. AJAX was also the associate

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.