Average response time: under 24 hours
Test hardness with a rebound (Schmidt) hammer, Mohs hardness picks, or a simple scratch test, then match the bond: soft bond for hard concrete, hard bond for soft concrete. A five-minute test saves days of grinding with the wrong tools.
For machine-matched tooling, browse our 3'' Metal Bond Diamond Grinding Disc with 4 Segments range.The bond must wear at the rate that keeps fresh diamond exposed. Hard concrete (granite or quartz aggregate) needs a soft bond that wears quickly; soft concrete (limestone or sandstone) needs a hard bond that resists wear. The wrong match means glazing or rapid diamond loss.
Send the hardness result to your tool supplier with the job size. A good supplier maps the bond chart to your number and recommends the grit sequence, so you order once instead of twice.
A>It is a quick sanity check, not a measurement. Use it together with a pick set or rebound hammer.
A>Use the bond for the majority and adjust speed and pressure on the rest, or switch bonds between passes.
A>No. Bond is chosen by the concrete; grit is chosen by the stage of the job.
Looking for the right tool? Check our 3'' Metal Bond Diamond Grinding Disc with 10 Segments. Looking for the right tool? Check our 3'' Metal Bond Diamond Grinding Disc with 5 Segments.A hardness test up front is the cheapest insurance in floor grinding. Match the bond to the slab, confirm with a test plate, and your tools will cut at the speed they should.
Written and reviewed by JOY TECH - an SGS & BV audited, CE/RoHS certified diamond tools manufacturer founded in 2004, exporting to 50+ countries.
Our factory and quality management system are audited by SGS and Bureau Veritas. Products meet CE/RoHS requirements and every piece is 100% inspected before packing.
Verified Certificates
