Crack Sealing Machine

VCF Crack Sealing Machine

A crack sealing machine (also called a crack filling machine or an asphalt crack sealer) melts hot pour bitumen sealant and pumps it into cracks and joints in asphalt. A sealed crack keeps rain and melt water out of the road base, so the crack does not grow into a pothole when the water freezes.

The Vimpo VCF comes in two models: the VCF400 with a 400 L sealant tank and the VCF200, a more economical entry model with a 200 L tank. The VCF400 is available as an O2 class trailer, truck-mounted or self-propelled. The VCF200 comes on a simple single-axle site trailer without brakes or a number plate, for use on the job site only, or carried on a truck. The tank has thermal oil heating and an agitator. On the VCF400 a jacketed Vimpo VD-25 pump sends the hot sealant to a thermal oil heated hand bar; the machine has its own diesel engine, and an inverter supplies the burner. The VCF200 is a mobile melting kettle with an agitator and an 11 kW diesel engine: the operator fills a bucket from the valve on the side of the tank and applies the sealant with a pour pot.

How Does a Crack Sealing Machine Work?

Heating

A diesel burner heats the thermal oil around the tank. On the VCF400 a thermal oil pump circulates it and a digital controller sets the oil and the sealant temperature. On the VCF200 the oil circulates naturally, without a pump, and a simple thermostat controls the temperature. The oil heats the sealant indirectly, so it does not burn on the tank wall.

Mixing and Pumping

The hydraulic agitator keeps the sealant even in the tank. On the VCF400 the jacketed Vimpo VD-25 pump sends it through the heated hose to the hand bar. Before work the sealant circulates back to the tank, so the hose and the bar are hot when sealing starts. On the VCF200 the operator fills a bucket from the valve on the side of the tank and applies the sealant with a pour pot.

Sealing and Cleaning

The operator follows the crack with the hand bar and controls the flow with the button on the bar. At the end of the job the pump sucks the sealant back into the tank, and the lines and the bar are flushed with diesel.

VCF400 Crack Sealing Machine

The VCF400 has a 400 L sealant tank. It is available as an O2 class trailer, mounted on a truck or as a self-propelled machine. The trailer version has two torsion axles (E certificate, 3500 kg total) and four pneumatic tyres, and it is 2550 mm wide at most, so it works on motorways and airports and also on narrow city streets. The burner gives 60.2 – 118 kW, and an air compressor (550 L/min, two 40 L tanks) is on board.

• 400 L sealant tank, vertical cylindrical
• O2 class trailer, truck-mounted or self-propelled
• Trailer: 2 torsion axles, total 3500 kg, max. width 2550 mm
• Air compressor 550 L/min, 2 × 40 L tanks

VCF200 Crack Sealing Machine

The VCF200 is the more economical entry model with a 200 L sealant tank. It comes on a simple single-axle site trailer without brakes, road equipment or a number plate, for use on the job site only, or it is carried on a truck. It is a mobile melting kettle with an agitator. The operator opens the valve on the side of the tank, fills a bucket, closes the valve and applies the sealant with a pour pot. The burner under the tank heats the thermal oil, and the oil heats the sealant in the tank by natural circulation, without a pump. An 11 kW diesel engine drives the agitator and the heating. The agitator runs at a fixed speed and switches on and off; a simple thermostat controls the temperature. It has no sealant pump, no hand bar, no hydraulic oil cooler and no air compressor.

• 200 L sealant tank, 50 mm rock wool, agitator
• Single-axle site trailer without brakes or number plate, or on a truck
• Valve on the tank side fills a bucket; applied with a pour pot
• 11 kW diesel engine, 50 L fuel tank and 50 L hydraulic oil tank
• Thermostat temperature control, LED work lamp, standard RAL colour

VCF Crack Sealing Machine Features

Insulated Sealant Tank

The tank is insulated and heated. On the VCF400 it is vertical cylindrical with a 5 mm ST37 shell and 8 mm ST37 top and base. It is insulated with 50 mm rock wool and cladded with 1 mm aluminium. A manhole gives access for filling and cleaning.

Engine and Heating Control

On the VCF400, the control panel shows the engine values and holds the digital temperature controllers. The burner, the agitator and the pumps are switched from the panel. The VCF200 has a simple thermostat.

Thermal Oil Heated Hand Bar

On the VCF400, thermal oil heats the hand bar, the same as the tank, so no alternator is needed. The head is replaceable. The operator starts and stops the flow with the button on the bar.

Own Power on Board

On the VCF400, a water-cooled diesel engine with electric start gives 15 kW at 1500 rpm and drives the hydraulics: the agitator, the pumps and the compressor. An inverter supplies the burner. The compressor gives 550 L/min with two 40 L air tanks. The VCF200 has an 11 kW diesel engine for the agitator and the heating.

VCF400 and VCF200 Compared

Options

The Vimpo VCF is also available with:

• Truck-mounted version: VCF400 or VCF200 on the customer's truck
• Self-propelled version: VCF400 as a self-propelled machine
• Crack preparation: Vimpo asphalt crack router to open the crack before sealing

Where Is a Crack Sealing Machine Used?

On asphalt motorways, city streets, bridges, viaducts and airport pavements. Crack sealing is preventive maintenance: a crack sealed early stops water damage and costs much less than a later patch or overlay. Joints between the asphalt and the kerb are sealed the same way.

Vimpo Road Maintenance Machines

Open the crack first with the Vimpo asphalt crack router. Repair potholes with the VTB Thermobox asphalt patching truck, and spray tack coat with the Vimpo asphalt distributors.

Crack Sealing Machine: Frequently Asked Questions

Crack sealing or crack filling: what is the difference?

Crack sealing treats working cracks that open and close with temperature changes. The crack is cleaned, often routed, and filled with hot pour polymer-modified sealant. Crack filling treats cracks that do not move. The Vimpo VCF heats and mixes hot pour sealant for both jobs, so it is used as a crack sealing machine and as a crack filling machine.

What is the difference between the VCF400 and the VCF200?

The VCF400 has a 400 L tank and an air compressor; it comes as an O2 class trailer, truck-mounted or self-propelled. The VCF200 is the more economical entry model with a 200 L tank and no compressor; it comes on a single-axle site trailer without brakes or a number plate, or carried on a truck. The VCF400 has the Vimpo VD-25 pump and the thermal oil heated hand bar. The VCF200 is a mobile melting kettle with an agitator and an 11 kW diesel engine; the operator fills a bucket from the valve and applies the sealant with a pour pot.

Does the machine need an external power source?

No. On the VCF400 the diesel engine drives the hydraulics, and the hydraulics drive the pumps, the agitator and the compressor. An inverter supplies the burner. On the VCF200 an 11 kW diesel engine drives the agitator and the heating.

How is the sealant heated?

Indirectly, with a thermal oil jacket around the tank. A diesel burner heats the oil. On the VCF400 a digital controller sets the temperature; on the VCF200 a simple thermostat controls it.

How do I clean the machine after work?

On the VCF400, the pump sucks the sealant from the hose and the bar back into the tank, and then the lines and the bar are flushed with diesel. The VCF200 has no hose or bar to clean.

Get a Quote for a Crack Sealing Machine

Tell us the model (VCF400 or VCF200),trailer or truck-mounted, and your sealant type; our team will prepare the quotation.