Addagrip 1000 System Concrete Pavement Protection

The Addagrip 1000 System Resin has been specifically developed to treat frost damaged, spalled or smooth concrete airfield pavements, concrete roads, concrete ramps and steps.

A major problem with concrete is that deterioration is caused by latent defects, chemical attack and frost damage, which over a period of time causes the top of the concrete to break-down. This breakdown may cause a safety or FOD (Foreign Object Damage) problem requiring removal of the affected areas.

The Addagrip 1000 System Resin applied directly onto the prepared concrete pavement is designed to prevent further deterioration. Areas treated over the last twenty years at military and civil airfields have prevented further deterioration, prolonging the life of the concrete pavement by an estimated 10-15 years.

Preparation

The surface preparation to the concrete surface is carried out by applying controlled hot compressed air. The Addagrip Hot Compressed Air System is a combination of propane gas and compressed air ignited in a chamber. The mixture burns at a temperature of approximately 1000°c with the exhaust exiting the chamber at a rate of 350m per second.

As the heat blast comes into contact with the concrete pavement it causes any water, oil or liquid contaminants to vaporise from the top few millimetres. These quickly evaporate from the surface and are blown away by the heat blast, leaving the surface capillary pores empty and open, ready to receive the Addagrip 1000 System Resin.

Application

Addagrip 1000 System Resin should be applied directly onto the warm and dry prepared surface. As the concrete cools the Addagrip 1000 System Resin will be drawn down into the open and empty capillary pores. This penetration of resin, typically 2-3mm, will lock into the structure of the concrete preventing migration of moisture.

Addagrip 1000 System Resin should then be applied at a rate to be agreed, coverage rates will depend on the porosity, texture and size of aggregate to be used. Application of the resin is by roller and squeegee or spray machine to large areas.

The Addagrip 1000 System Resin should then be saturated with a chosen washed, clean and dry aggregate. Allow the resin to cure, approximately 8 hours at 15 °C. Sweeping and vacuuming as required should then remove all excess aggregate.

Testing

Various independent tests confirming the suitability of the Addagrip 1000 System Resin for the treatment of damaged concrete pavements have provided the following results:

General description

The Addagrip 1000 System consists of a specific resin and aggregate. The purpose of the aggregate is to increase roughness of the pavement. The system has been developed to treat top layer as well as deep damages and to seal small cracks and spalled surfaces on concrete airfield pavements. Applying the Addagrip 1000 System Resin onto the damaged or spalled surfaces of concrete will prevent further deterioration prolonging the life of the concrete.

Testing

Laboratory tests were performed to determine the hydrophobic and physical properties of the system using 10 x 10 x 10cm blocks of B35 Concrete.

Evaluation of roughness using a 1mm aggregate

Concrete roughness ratio (without surface treatment)

Coefficient of variation

Roughness factor after application of the system

Coefficient of variation

0.69

1.9%

0.75

2.26%

Protection against absorption of water and aviation fuel

Absorption of samples in water (without surface treatment)

Absorption of samples with surface treatment

Reduction of absorption

Absorption of samples in aviation fuel
(without surface treatment)

Absorption of samples with surface treatment

Reduction of absorption

4.19%

0.19%

95.4%

5.26%

1.31%

75.2%

Freeze resistance

Freeze and de-icer tests have been made, the tests over 200 cycles of freezing and defrosting of the 10 x 10 x 10cm cubes treated in the system provided the following results:

During the tests the top layer condition and any increase of absorption was checked.

Strength reduction after freeze resistance cycle completed – 11.2%

Mass decrement of samples – not evident

De-icer resistance – Good

Absorption of samples after freeze resistance test – 0.45%

Adherence to the concrete

Tear of resistance tests were carried out using a SP-1 Hydraulic Device, results as follows:-

Mean value 2.7Mpa

Minimum value 1.9Mpa

The tear off occurred in the concrete layer

High temperature resistance

Temperature resistance checking of the hydrophobic agent consisted of 20 test cycles. In each cycle the samples covered in the system were dried in temperatures of 110 °C and then checked for absorption in water at a temperature of 18 °C – 20 °C.

No macroscopic changes and mass losses have been evident during the test.

Capability of applying line marking paints on to treated areas

Application of chlorinated rubber paint, acrylic paint and epoxy paints have proofed easy and successful.

Download 1000 System brochure
Download the 1000 System brochure>>>

1000 System Application

Project reference sites:

RNAS Culdrose
RNAS Yeovilton
RAF St Mawgen
RAF Wittering
DERA Boscombe Down
RAF Odiham
RAF Cranwell
RAF Cottesmore
RAF Lakenheath
RAF Marham
RAF Waddington
RAF Aldergrove
RAF Leuchars
RAF St Athan
London Gatwick Airport
London Heathrow Airport
Radom and Lask Airfields – Poland
Bodo Airport – Norway
Bergen Airport - Norway

For further information on any of the above sites please do not hesitate to contact us.

Overseas Agent:

Barbara Leksowska
AGISA sp. z o.o
Al. Wojska Polskiego 27/21
01-515 Warszawa
Poland
Tel/fax : + 48 22 / 869 95 94
Tel. + 41 22/ 869 99 22

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Addagrip Surface Treatments UK Limited
Addagrip House, Bell Lane Industrial Estate, Uckfield, East Sussex TN22 1QL, United Kingdom
Telephone: +44 (0)1825 761333 Fax: +44 (0)1825 768566

Addagrip Surface Treatments UK Ltd is a company registered in England - Registered No. 1492055
Vat No. GB 315993925