The principle of the Wet Pendulum Tester to assess the friction characteristics of each specimen is by determining the wet dynamic friction between the specimen and the slider of a pendulum swinging in a vertical plane.

Portable instrument is used in the laboratory for classifying the wet slip resistance of new flooring (pedestrian surfaces) materials. It is also used on site to assess the slip resistance of existing floors and pavings.

A rubber slider is attached to a spring loaded foot at the end of a pendulum arm (leg). The pendulum arm is released, allowing it to swing so that the slider contacts the wet pedestrian surface over a set distance of 126mm. The slider rubber surface of the device has to be conditioned prior to each testing. This is done using a grade P400 abrasive paper.

Optical hazing effect is not a new phenomenon.

So what is Optical hazing? How does it present itself and what causes it?

Firstly, it will present as a smoky, hazy, smudgy type of finish in the surface of polished porcelain tiles, it will only be visible when a direct light source reflects at a certain angle across the surface of the tile.

Are our glass mosaics pool safe? In order to answer that question, we must first understand why some glass mosaics are not pool safe. The glass material on the mosaic itself is unaffected when used for pools. The problem lies on the glue that the manufacturer use to attach the mesh/netting to the glass, which we cannot be sure if it is water soluble.

Porcelain tiles can come in many variety of finishes. Choosing the finishes will depend on the intended application as it will provide the function in addition to the look and the feel. We will look into major categories of finishes for porcelain tiles and their pros and cons.