Causes of Scratches Everywhere on Polished Concrete

2021-12-14

Poor execution of the work

In many cases the operators of the machines have either gone too fast for the diamond tools to properly process the concrete surface. Or in other cases, they may have completely missed scratches of the floor at different stages of the grinding process. For the surface of the polished to look consistent and scratch free, the whole surface must be processed equally by each grit of the process.

Another common error during execution is not cleaning the floor between the grinding steps or not keeping the area closed to other traffic before the floor construction is completed. Either of this error can lead to the same condition which is contamination.

Poor quality of diamond tools

The poor quality of diamond tools may cause scratches on concrete floor when grinding. We know very clearly that the quality of diamond tools depend on the supplier. There is the possibility that the tools are mislabeled or made under conditions of low or no quality control. One possible problem that can occur during manufacturing is contamination of the diamond products by reusing molds or presses that have residues from other diamonds being made.

You can imagine the problem that could occur if a 30 grit diamond crystal gets into the mixture of a 200 grit tool. For this reason, consumers are encouraged to do their research before buying diamond tools. Sometimes it’s not that the more expensive the better, choosing the right one with a good reputation will at least not make any big mistakes in your work. Any reputable supplier will connect you with references of the product’s use and results.

Improper application of grinder and tools

1. Using a diamond tool made for concrete on marble is like using a wire brush to clean your fingernails! It will do the job but may cause some damage more or less. Many diamond manufacturers tell customers that their diamond tools can be used on concrete, terrazzo and marble surfaces. There is no way this is possible since the chemistry required of the diamond tools for these varying surfaces must be different if the highest possible result is to be achieved for each.

2. Another problem for improper use of diamond tools could be using the wrong bond or grits of diamond tool. Generally speaking, hard concrete needs soft bonded tools and vice versa. And the choice of the diamond grits should be varied from coarse to fine and grinding according the grit number. Skipping the grit number when grinding may easily cause the scratches appear.

3. The grinder chosen to run the diamond tool must have been considered by the manufacturer when grinding. As an example, a diamond tool that is made to perform on a walk-behind grinder is not expected to perform the same on a hand-held grinder. The grinder and the diamond tools must be made to work together if predictable results are possible.

Knowing the reasons why scratches most frequently occur on a polished concrete floor may help you avoid these errors and make you job go smoothly. If you have any problems for the grinding and polishing work of concrete, please do not hesitate to contact DTS Diamond Tools for help and advice. We are all here to supply you solutions that save you time and cost.