Concrete coring, cutting & scanning

J & B Coring: Your concrete coring, cutting & scanning specialists

J & B Coring prides itself on record call-out times and offers the following fully supervised services nationally:



Concrete Coring

Core drilling is the process whereby a cylindrical hole of any diameter is drilled into any thickness of solid rock, masonry or concrete slab. This process is used in preparation for a variety of applications:

Concrete Coring
  • Plumbing pipes
  • Manholes
  • Air conditioning ducts
  • Fire hoses
  • Air vent ducts
  • Service ducts
  • Electrical conduits
  • Internet cables
  • Fibre optics
  • Telephone lines
  • Anchor bolt holes
  • Bollard installation
  • Core samples for analysis

Diamond-tipped core drills are used should more accurate drilling be required and cores need to be drilled into stone or steel-reinforced concrete. Diamond drilling is also much quicker, cleaner, limits the need for post-drilling patch work and significantly reduced noise levels and vibrations during drilling. This allows us to work in occupied buildings and confined spaces.

A core drill is used to drill a non-destructive pilot hole to remove and preserve the core sample which is then sent for strength, composite and quality testing.

Core drilling can be applied vertically, horizontally or at an angle to suit your project’s requirements. Core drilling machines also makes use of suction pads to prevent damage to any finished surfaces during the drilling process.

Where large holes or openings are required, a process called stitching is used in which interlocking diamond cored holes are drilled to provide openings of any shape and size.


Wall Sawing

Wall sawing, also known as flat sawing, is one of the most common processes used in demolition, expansion and alterations. It is ideal for selective demolition in occupied buildings or sensitive work environments. The wall saw is ideal for precise cutting of the following flat surfaces and applications:

Wall Sawing
  • Expansion and control joints
  • Concrete floors
  • Paving
  • Foundations
  • Brick walls
  • Single and double blade trenching
  • Beams and ceilings
  • Columns
  • Windows
  • Access doors
  • Stairwells
  • Elevator shaft openings
  • Bridge decks, culverts or dam walls
  • Highways and roads
  • Controlled demolition of any complete or partial concrete structures

Diamond-tipped, water-cooled saw blades are used for the cutting and sawing of any steel reinforced concrete like embedded rebar without the risk of causing structural damage while creating very little dust, noise, vibration and debris.

Because the wall saw is mounted on a hydraulic track, straight and precise cut lines are easily dealt with. This saw can cut up to 720mm deep and is able to cut flush incisions close to walls.

Our wall saws are extremely versatile and because of their lightweight nature, can be applied vertically, horizontally and at an angle in situations where heavier floor saws are not feasible in confined spaces or restricted access areas. Wall saws can also be operated by a remote control for increase safety.


Wire Sawing

Wire sawing is a practical, safe and cost-effective solution to cut and demolish large sections of concrete, brick, granite, stone and steel in work areas that are generally too confined for traditional machinery or conventional demolition methods.

This type of saw uses a diamond-beaded wire that creates more precise and controlled incisions than a conventional blade and is used where clean, smooth cut perimeters are required. Diamond wire sawing is ideal for cutting and removing heavily reinforced concrete and can be used for the following applications:

  • Jetties and dam walls (hydraulic machines are available for underwater applications)
  • Bridges and bridge decks
  • Columns
  • Beams
  • Cutting piles
  • Mass concrete removal without breakage

The diamond-beaded wire rope can be strung through or around any thickness of structure which allows for the wire saw to be applied at almost any angle and depth.

This method of sawing also creates virtually no vibrations and greatly reduces the risk of structural damage. The process is also fumeless and there is very limited noise, dust and debris emission so the wire saw is ideal for use in occupied buildings.


Concrete Scanning and Rebar Surveys

Our concrete scanning equipment allows us to accurately survey the structure from which core samples are needed. It also allows us to ensure that any drilling, breaking, cutting or coring needed is done into non-reinforced areas to preserve structural integrity and eliminate costly mid-project repairs and delays

Concrete scanning uses non-destructive surface penetrating imaging systems that can measure slab thicknesses as well as locate any of the following in concrete slabs:

Concrete Scanning
  • The rebar pattern (type and diameter)
  • Mesh patterns
  • Post–tension cables
  • Metallic conduits such as pipes, drains and water lines
  • Concrete scanning can be done to targets in walls, floors and ceilings

Once the scans are complete, we are able to provide a detailed condition report and images of the area noting any weaknesses in the structure to assist with construction quality control.

This investigation also allows us to determine the load capacity of any concrete slabs and are able to provide an engineer’s certificate supplied by registered structural engineers.


Other services offered

Chemical Anchoring: Load bearing anchors can be drilled and prepared to engineer’s specification and done according to specified chemicals.

Reinforcing the Starter Bar: We can also assist with the coring for the installation of hold down bolts as well as epoxy and grouting for engineering needs.



The Benefits of using Diamond-Tipped Tools

Our use of diamond tools to cut or drill concrete has distinctive benefits over the use of conventional tools. An overview of these benefits is listed below:

  • Diamond tools save time and money because the process is significantly quicker and more efficient, reducing down-time on the building site as well as requiring fewer operators
  • Very little dust, debris and noise is created allowing for non-disruptive use even in occupied buildings and sensitive environments
  • Because very little vibration is created during the cutting and drilling process, large amounts of concrete can be cut without affecting the structural integrity of the overall structure
  • The precision of a diamond cut reduces if not completely eliminates the need for post drilling repair and patch work