Concrete Clarity Meter (CCM)
Industry standard Concrete Clarity Meter
QUANTIFY SURFACE QUALITY
The Rhopoint IQ Concrete Clarity Meter measures reflected image quality; it is the only hand held instrument that profiles how light is reflected from a surface. Glossmeters are usually used to measure the “shininess” of a surface but are not sensitive to common effects which reduce appearance quality.
DISTINCTNESS OF IMAGE (DOI)
– A measure of how clearly a reflected image will appear in a reflective surface and is used to quantify effects such as orange peel and surface waviness.
Haze is a common problem associated with coatings and polished materials. Surfaces with haze have a “milky” finish with a “shallow” reflected image. This important characteristic is directly measured with the Concrete Clarity Meter
Surface with high haze
REFLECTANCE HAZE
Orange peel dramatically reduces appearance quality without affecting gloss readings. The Rhopoint IQ Concrete Clarity Meter with DOI measurement can quantify the differences
Surface with poor DOI
– An optical effect caused by microscopic texture or residue on a surface.
Visible Symptoms: A milky finish is apparent on the surface with a loss of reflected contrast. Halos and patterns can be seen around reflections of high intensity light sources.
Causes: Resin transfer, lack of refinement, burnish and polishing marks, fine scratches, poor cleanliness/surface residue.
| LEVEL | NAME | DISTINCTNESS 0F IMAGE (DOI) GLOSS | IMAGE CLARITY VALUE, % | LEVEL |
|---|---|---|---|---|
| 1 | Flat (Ground) |
Images of objects being reflected have a flat appearance. | 0-9 | <10 |
| 2 | Satin (Honed) |
Images of objects being reflected have a matte appearance. | 10-39 | |
| 3 | Polished | Images of objects being reflected do not have a sharp and crisp appearance but can be easily identified. | 40-69 | |
| 4 | Highly Polished |
Images of objects being reflected have a sharp and crisp appearance as would be seen in a near-mirror like reflection. May require grouting | 70-100 |
DISTINCTNESS OF IMAGE (DOI) GLOSS
DOI is the sharpness of images of objects produced by reflection at a polished surface, sometimes called image clarity
Measurement by Image Clarity Meter (ASTM D5767): The DOI, Image Clarity Value, obtained from this test method, range from 0 to 100 with a value of 100 representing perfect DOI (image clarity).
HAZE
Haze is the cloudiness or milky appearance of images of objects produced by reflection in a polished surface
The minimum number of tests distributed across the polished surface should be three for areas up to 1000 ft² and one additional test for each 1000 ft² or fraction thereof. This applies to both the Image Clarity Value and Haze Index.
The mean (average) values of the test results should be used to evaluate compliance with this chart
*Reproduced with the permission of “Concrete Polishing Council of the American Society of Convcrete Contractors”
Simultaneous measurement of all parameters, results are date/time stamped.
Statistics per measured parameter.
Graphical reporting for quick trend analysis.
Easy Batching
User definable batch names and batch sizes for quicker and more efficient reporting.
Rapid data transfer
Software-free data transfer.
USB connection to PC instantly recognises the device as a drive location which facilitates the quick transfer of files using Windows Explorer or similar.
Direct data input via BT wireless
Instantly transmit measured readings directly to programs such as MS Excel on your PC / tablet to greatly simplify the reporting process.
Statistical analysis via novo-gloss multi gauge software
This software provides an easy means to measure, import and compare data and export the measurments into several other formats.
Using the Rhopoint Concrete Clarity Meter can help to achieve more consistent surface finishes.
Read more about polished concrete industry standards for appearance measurement
and
Understand more about the NEW Polished Concrete Appearance Chart
