Repair Systems
Abrasives, blades & tools
Diamond crack chaser and grooving blade — technical reference for concrete spalling in Australian remedial building practice. Covers system selection, product comparisons, and brand equivalents.
What is abrasives, blades & tools?
Diamond cutting blades, crack chasing blades, and angle grinder abrasive discs are the principal cutting and surface preparation tools used in concrete remediation works before any repair product is placed. Diamond blades are used to saw-cut around the perimeter of spalled areas, saw-chase cracks for injection port preparation, and cut existing sealant joints for reinstatement — they require water cooling on reinforced concrete to prevent overheating and blade glazing. Angle grinder discs are used for concrete surface profiling, removal of carbonated or contaminated laitance, and preparation of feathered edges at repair perimeters to achieve the minimum CSP (concrete surface profile) specified by the repair mortar manufacturer. Both are consumable items; blade and disc selection (bond hardness, diamond concentration, grit size) must match the concrete hardness and application to achieve cost-effective service life. Use of these tools generates respirable crystalline silica (RCS) dust — a mandatory silica risk assessment and RPF3 respirator are required.
Product Reference
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System Description
Creates consistent V-joint or square groove for repair or sealant. Min 10 mm wide x 10 mm deep.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Creates consistent V-joint or square groove for repair or sealant. Min 10 mm wide x 10 mm deep.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Creates consistent V-joint or square groove for repair or sealant. Min 10 mm wide x 10 mm deep.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Creates consistent V-joint or square groove for repair or sealant. Min 10 mm wide x 10 mm deep.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Creates consistent V-joint or square groove for repair or sealant. Min 10 mm wide x 10 mm deep.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
For scarifying concrete surfaces pre-repair. Achieve min CSP 3 profile per ICRI 310.2. Use with vacuum.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
For scarifying concrete surfaces pre-repair. Achieve min CSP 3 profile per ICRI 310.2. Use with vacuum.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
For scarifying concrete surfaces pre-repair. Achieve min CSP 3 profile per ICRI 310.2. Use with vacuum.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
For scarifying concrete surfaces pre-repair. Achieve min CSP 3 profile per ICRI 310.2. Use with vacuum.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
For scarifying concrete surfaces pre-repair. Achieve min CSP 3 profile per ICRI 310.2. Use with vacuum.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Mask adjacent surfaces before sealant or coating. Remove while product still wet or uncured.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Mask adjacent surfaces before sealant or coating. Remove while product still wet or uncured.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Mask adjacent surfaces before sealant or coating. Remove while product still wet or uncured.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Mask adjacent surfaces before sealant or coating. Remove while product still wet or uncured.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
System Description
Mask adjacent surfaces before sealant or coating. Remove while product still wet or uncured.
Technical Properties
- Diamond blades provide precise, clean cuts through reinforced concrete
- Available from tool hire, hardware, and abrasives suppliers nationally
Limitations
- Consumable — blades blunt rapidly on hard or abrasive aggregates
- Generates respirable silica dust — RPF3 respirator and engineering controls mandatory
PROCUREMENT SOURCES
Brand Equivalents
Side-by-side view of equivalent products across all major brands.
| Material | Ardex | Sika | Fosroc | Tremco / Other | Parchem / Mapei |
|---|---|---|---|---|---|
| Saw-cut crack chaser blade (diamond) | Husqvarna Vari-Cut | Norton Clipper | Makita Diamond | Bosch Expert | Lackmond Rock Master |
| Angle grinder disc (grinding) | Husqvarna Vari-Cut | Norton Bear-Tex | Metabo | Makita | Bosch Expert |
| Masking tape | 3M 2090 | Tesa 4323 | Intertape PG21 | Shurtape CP 66 | Selleys |
Disclaimer
Information is general only. Product selection must be confirmed against project requirements, substrate condition, exposure class, manufacturer technical data sheets, NCC requirements, Australian Standards (including AS 3600), and consultant or structural engineer specifications. Do not rely on this reference as a substitute for professional engineering advice.
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