Road Surgeons Pty Ltd

Quality & Service Assured
For The Best in Asphalt &
Pavement Maintenance
Sydney

(02) 8065 8011

AMC0 Prime and AMC00 Prime

“AMC0 Prime” or “AMC00 Prime” Cutback Bitumen Primes are an essential part of any flexible pavement design. A Prime:  is the initial treatment to prepare the surface for any subsequent spray seal or asphalt layer  provides a surface for subsequent treatments to bond to  assists in waterproofing the pavement  penetrates the surface of the prepared pavement  settles the road base and deals with surface dust  minimise the drain-down of binder from overlying spray seals into the base  forms the basis for the performance of any future spray seal or asphalt layer  should be used with any new flexible pavement  should be allowed to cure for a minimum of 2 -3 days prior to any spray or asphalt seal Once cured, the primed surface should be hard, dry and have a black to dark brown appearance. The success of priming relies on: the preparation and finished condition of base materials selection of an appropriate primer selection of appropriate application rates suitable weather conditions application procedures Generally, primers are applied at rates between 0.5 and 1.1 L/m2 Priming pavements that are too damp will prevent penetration of the primer. They may require excessive time to dry and cure, and residue left on the surface may affect the next treatment. The Road Base to be primed should be well compacted and firm. The surface should be allowed to dry out on top and to a depth of 5–10 mm in order to allow the prime to penetrate into the pavement pores and provide a strong bond for the final treatment. A loose and powdery base will not allow the prime to be effective. Ring Us Now and let us help you with...

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Line Marking

  Line marking is necessary for clear delineation of parking areas, direction of traffic etc. in any busy  or shared...

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Rejuvenation

In low trafficked asphalt and bitumen sealed pavements, oxidation, cracking, and general deterioration of the pavement, has more to do with environmental influences such as, the weather, exposure to the sun’s Ultra Violet light. Under these conditions, rehabilitation and longevity of the pavement is more often simply the need to REJUVENATE and SEAL the existing pavement. The aim of rejuvenation is to increase the quality and quantity of asphalt/bitumen binder and to seal hair type cracks and air voids in an existing sealed surface. This treatment is an economical method of extending the life of a distressed and oxidized asphalt/bitumen pavement. The rejuvenation agent replenishes the plasticizing fraction of asphalt/bitumen (the glue holding everything together) lost through oxidation/ageing. Rejuvenation is an excellent preventive maintenance treatment. It is not capable however of rejuvenating a pavement which has deteriorated to the point that it is no longer structurally sound. Therefore, Rejuvenation is most effectively used before pavements begin to show dramatic effects of age and exposure to the elements. Before a rejuvenation treatment, any areas where there is structural failure should have asphalt patching done at least 1 week prior to rejuvenation of the entire pavement. On the day of the treatment, any dirt or foreign material should be removed from the pavement surface by sweeping or compressed air before applying the rejuvenation agent. Rejuvenation can reseal, revitalize and make your pavement look new...

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Asphalt Paving

Asphalt paving is the most cost effective method for making a strong durable water proof sealed pavement. When asphalt paving a pavement for the first time, it is essential that the base is a suitable granular material which has been properly compacted. When resurfacing/overlaying a pavement seal which is old and starting to fail, all failed sections must first be patched to ensure the overlay will...

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Asphalt Crack Sealing in Sydney

What is crack sealing? As it sounds, crack sealing is where we seal the cracks in asphalt and bituminous spray seals. Why do we seal cracks? Crack Sealing is done to prevent the ingress of water below the pavement wearing course, into the sub structure of the pavement. Water infiltration is “the beginning of the end” for a pavement. Water that penetrates to the sub base of the pavement will allow it to soften and become unstable. Unsealed cracks may either; slowly widen and accelerate the propagation of crocodile cracks. Unsealed cracks eventually led to various pavement deformations, potholes and complete pavement failure. The use of crack sealing on a pavement prior to asphalt re-sheeting or bituminous resealing slows and greatly reduces the possibility of reflective cracking on the new pavement layer. This again extends the life of the pavement. If utilized early enough crack sealing defers all of the more expensive maintenance and the eventual pavement reconstruction. What type of cracks are suitable for sealing? Longitudinal cracks/joints. Transverse cracks/joints. Meandering cracks. Diagonal cracks. Crescent shaped cracks. Block cracking when the pavement structure is still firm. Minor Crocodile Cracking, where there is no base deformation and the wearing surface is not loose. Crack preparation? Cracks must always be dry. Depending on; the type of crack, desired service life, serviceability, and budget, crack preparation may involve any combination of the following; weed poisoning and/or raking/ripping, power routing, blowing out with compressed air. Excessively deep cracks may also be packed with backing rod prior to sealing. Generally cracks need to be blown with compressed air to clean the crack of loose material, which may prevent bonding of the sealant. What type,...

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Asphalt Patching

When an asphalt or bitumen spray sealed pavement is damaged or old and cracked, it is no longer sealed properly. This allows water into the sub base and softens it, leading to further failure of the pavement. Once this has occurred it is necessary to excavate the damaged area and replaced with a new hot mixed asphalt...

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