SILKOT® asphalt patching machines – infrared pothole repairs and asphalt recycling

Asphalt machines are used for heating and processing asphalt mixes during the construction and maintenance of transport infrastructure. We offer technological solutions designed for demanding operating and climatic conditions. Our asphalt machines allow pothole repairs even at temperatures down to -5 °C.

Road workers laying hot asphalt during road surface repair using asphalt patching machines SILKOT and hand tools.

SILKOT asphalt patching machines

SILKOT® asphalt machines are manufactured by Kotrbatý as our in-house solution for fast and high-quality repairs of potholes and damaged roads. The name SILKOT® was created by combining the words Road (SILnice) Kotrbatý (KOT), referring to our long-term experience in road technologies.

Asphalt repairs using infrared radiation

Our asphalt machines use infrared asphalt heating, enabling efficient and long-lasting road repairs. The damaged spot and its surroundings are heated up to 180 °C, ensuring perfect bonding between the original asphalt and the newly added material.
A major advantage of this technology is the possibility of reusing the original milled or broken asphalt. The operator sweeps it up, heats it, and mixes it with new asphalt as needed. The result is a seamless repair without weak points.
Thanks to infrared heating, asphalt repairs can also be carried out in winter, even at sub-zero temperatures, which significantly extends the construction season.

Why repair roads with SILKOT® machines?

Road repairs using SILKOT® asphalt machines are:

seamless
zero-waste
high-quality
eco-friendly
fast
cost-effective

Key benefits of SILKOT® asphalt machines

Cost-saving road repairs – up to 2.5× cheaper compared to conventional road repair methods
Minimal traffic disruption – traffic can resume just 15 minutes after rolling
Seamless bonding to the existing surface – up to 5 years longer service life compared to standard repair methods
Repairs possible even in winter
Reuse of old asphalt – less waste, lower costs

How does infrared asphalt repair technology work?

Road pothole repair using infrared technology. Securing the repair area.

Securing the repair site with traffic signage

Road pothole repair using infrared technology. Cleaning and debris removal.

Cleaning and sweeping the damaged asphalt

Road pothole repair using infrared technology. Heating.

Heating up to 180 °C

Road pothole repair using infrared technology. Adding recycled mix.

Adding recycled asphalt mix

Road pothole repair using infrared technology. Leveling.

Leveling the road surface

Road pothole repair using SILKOT machine. Compaction.

Compacting the heated mix

SILKOT – mobile equipment for asphalt repair

Mobile SILKOT® units represent modern technology for year-round repairs of asphalt pavements using reclaimed asphalt (RAP). Thanks to infrared heating and regeneration of milled asphalt, they enable fast, high-quality, and significantly cheaper pothole repairs without creating joints.

SILKOT 70-80

Technology and machine design

The basic and most important part of the SILKOT 70–80 machine is:

an insulated heating hopper with a capacity of approximately 1.1 m³ of reclaimed asphalt
rear tilting infrared heating head

Other main structural assemblies:

a dual-axle chassis with a tilting ramp for a roller
a winch with a supporting structure for tilting the rear head
a gas system with three LPG tanks
an electrical system with a battery, charger, and control cabinets

Asphalt recycling without degradation

A major advantage of SILKOT® technology is the use of waste from milling asphalt pavements. The reclaimed material is heated in an insulated hopper to 150–160 °C, without the risk of burning the old asphalt.

This prepared material:

retains its binder properties
achieves quality comparable to the original asphalt mix
can be fully reused for road repairs

Year-round operation and low costs

Repairs can be carried out even in winter, down to temperatures of −10 °C. At lower temperatures, it is technically possible to perform repairs, but costs increase significantly.

Additional benefits of the technology:

operation by only two trained workers
the repaired area does not crack
repair cost is 2–2.5× lower than with conventional technologies
environmentally responsible disposal of problematic asphalt waste
LPG refuelling at standard filling stations

The technology used extends the service life of the repaired pavement by at least 3–5 years.

SILKOT 70–80 variants

SILKOT 70–80 – tractor-towed version
SILKOT 70–80 VA – vehicle-towed version
SILKOT 70–80 TH – both variants with the option of exchanging 33 kg propane (PB) cylinders and a hoist

SILKOT 10

A compact solution as a vehicle body

SILKOT 10 is based on the same proven technology as the SILKOT 70–80, but the entire unit is designed as a body mounted on a truck chassis.

Customer:

provides their own vehicle
or we can supply a new or used vehicle

SILKOT 10 variants

SILKOT 10 TH – with exchange of 33 kg propane (PB) cylinders and a hoist
SILKOT 10 DC – with split rear infrared head (offset up to ±1 m)
SILKOT 10–2 – with an enlarged hotbox 2 m³

Technical parameters of SILKOT 10

LPG tank volume: 6 × 100 l (600 l)
LPG consumption: approx. 400 l / 20 h
Electrical system: 12 V / 24 V / 230 V
Primary source: 12 V
Winch, light bar, beacon: 12 V DC
Blowers: 24 V DC
Burner control and temperature regulation: 230 V
Reclaimed asphalt hopper volume: 1.1 m³ (approx. 1,800 kg)
Reclaimed asphalt temperature: 150–160 °C
Pavement heating time: 10–12 minutes
Daily reclaimed asphalt consumption: approx. 1 m³
Total machine weight: approx. 11,200 kg (including full hopper, roller, LPG, and chassis)

Infrared asphalt heaters and recyclers ICP 30–200

ICP 30–200 – fast and efficient asphalt repair

The ICP 30–200 infrared asphalt heater and recycler is a lightweight, mobile, and high-performance unit designed for rapid repairs of potholes and damaged asphalt surfaces. Thanks to sequential infrared heating, it can prepare asphalt for repair in just 5–9 minutes (depending on outdoor temperature, humidity, and wind).

In one cycle, it is possible to heat up to 3.7 m² of asphalt, which significantly increases work productivity and reduces the time required for road repairs.

Easy operation and maximum flexibility

The unit is designed with an emphasis on easy handling directly at the repair site. Operation requires only 1–2 workers, which reduces staffing costs and simplifies work organization.

Four self-regulating heating zones make it possible to adjust the size of the heated area to the specific scope of the repair and optimize energy consumption.

Transport without restrictions

Transporting the ICP 30–200 heater is possible on any platform with minimum dimensions of 160 × 300 cm and a load capacity of 280 kg – typically on the cargo bed of a truck or on a small passenger trailer.

Technical specifications of ICP 30–200

Heated area dimensions: 252 × 150 cm
Weight: 280 kg (without gas cylinders)
Gas cylinder capacity: up to 4 × 12 kg
Heating zones: 4 separately adjustable zones
Control system: integrated control of both the gas and electrical system
Control panel: gas pressure indicator and battery status
Power supply: integrated connector for charging batteries
Safety: fire extinguisher included as standard
Colour options:
orange / zinc / aluminium
or a fully chrome-plated construction

Service and support

operator training included in the price
fast service within 24 hours
spare parts secured

Asphalt regenerators and hot mix asphalt storage units LTB 3.5

LTB 3.5 – mobile hot asphalt mix storage unit

The asphalt regenerator and storage unit LTB 3.5 is a mobile device designed for year-round production, regeneration and storage of hot asphalt mix. With a capacity of up to 3.7 tonnes of asphalt, it represents an ideal solution for municipal services, road maintenance and construction companies.

The unit is designed so that it can be:

permanently installed on a box body of a truck
transported as cargo on a truck bed
transported on a tandem trailer

Year-round asphalt repairs without dependence on an asphalt plant

The main advantage of the LTB 3.5 unit is fast and reliable supply of hot asphalt mix throughout the year. From cold asphalt bags, stored asphalt or milled asphalt, the unit can produce hot asphalt mix in approximately 2–3 hours.

Thanks to thermostat-controlled heating, the quality of hot asphalt can be maintained for up to three consecutive days without loss of its properties. This significantly increases flexibility during pothole repairs and road surface maintenance.

Economical operation and easy handling

LTB 3.5 is equipped with automatically regulated propane burners that ensure:

low gas consumption
uniform heating of the asphalt mix
safe and stable operation

The unit is designed with emphasis on mobility, ease of operation and minimal staffing requirements. Hot asphalt can be:

regenerated from cold asphalt bags
melted from milled asphalt
or filled directly from an asphalt plant via the top filling opening with insulated lid

The output of the asphalt mix is ensured by six gravity discharge outlets with a guide, enabling smooth and precise dosing.

Technical specifications of LTB 3.5

Dimensions: 240 × 240 × 160 cm (L × W × H)
Storage capacity: 3.7 tonnes of asphalt
Burner output: 98 kW (334 000 BTU/h)
Thermostat range: 38 °C – 200 °C
Gas tanks: 3 × 100 l
Heating of gas tanks: external, independent heating
Power supply: 2× battery
Converter: 220 / 24 V
Charger: Bosch C7
Safety: magnetic safety lock
Signalling: LED beacon
Ignition: electric igniter with safety protection
Filling openings: 2× insulated lid, manual operation
Outlets: 6× gravity outlet with guide chute
Insulation: a thick layer of high-strength glass-fibre insulation
reflective metal layer for more efficient and economical heating
Construction: fully welded steel construction of both the outer shell and the heating chamber
Weight: 2 570 kg

Asphalt patching machines