Road Surgeons Pty Ltd

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

(02) 8065 8011

QDP Spraying

  QDP (Quick Dry Primer) is a special fast drying (bitumen/hydrocarbon solvent based) primer for priming of concrete roads or concrete bridge decks which are required to be surfaced with a Bitumen Spray Seal or Hot mixed asphalt. On concrete a traditional bitumen emulsion does not bond properly to concrete and so any subsequent Bitumen Spray Seal or hot mixed asphalt does not bond properly. QDP with its hydrocarbon solvent ensures ADHESION of bitumen spray seals or hot mixed asphalt to any concrete...

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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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Concrete Slab Lifting in Sydney

  Slab Jacking/Pressure Grouting( Mud Jacking, Lifting, Stabilising) When a Concrete Pavement is not properly sealed at the joints, water can enter the pavement sub base and soften it. This leads to sub grade failure due to the pumping action from traffic loads. This pumping then develops voids under the slabs which in turn cause slabs to become unstable and even sink. Slab Jacking/Stabilising corrects differences in the levels between concrete slabs and stabilises (stops from moving) rocking slabs. This extends the pavement life and defers much more costly complete...

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Joint Sealing

  What is joint sealing? Joint sealing is where we seal the joints in concrete pavements. Why do we seal joints? Joint Sealing is done to prevent the ingress of surface water below the concrete slabs, 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. Joint Sealing of a concrete slab also prevents the joints filling with non compressible matter which will prevent expansion joints from allowing movement, thus shifting stresses to other points in the slab and eventually leading to irregular cracking. Unsealed joints may allow a concrete slab to sink and crack. If utilized early enough joint sealing can defer and even eliminate the need for more expensive maintenance such as Slab Jacking/Stabilizing( Mud Jacking, Lifting, Pressure Grouting). Or in worst case, the much more expensive cost of complete reconstruction of the concrete slabs. The use of joint sealing on a concrete pavement prior to an asphalt overlay slows and greatly reduces reflective cracking on the new pavement layer. What type of joints are suitable for sealing? Longitudinal joints. (construction, control, or expansion joints) Transverse joints.  (construction, control, or expansion joints) Joint preparation? Joints must always be dry. Depending on; the type of joint, desired service life, serviceability, and budget, joint preparation may involve any combination of the following; weed poisoning and/or raking/ripping, power routing, sawing,  blowing out with compressed air, priming. Excessively deep joints may also be packed with backing rod prior to sealing. As a minimum, joints are always blown with compressed air to clean the joint of...

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