ABRASIVE BLASTING TECHNIQUE OF SURFACE PREPERATION FOR PAINTING Abrasive blast cleaning is most often associated with cleaning painted and unpainted steel. It may also be used with care to prepare concrete and masonry surfaces and to clean and roughen existing coatings for painting. Abrasive blasting is an impact cleaning method. High-velocity abrasive particles driven by(…)
Paints & Decoratives
PAINT FAILURE IN BUILDINGS
PAINT FAILURE IN BUILDINGS Oil bound paints sometimes fail when used on certain building materials. When an acid and alkali react together, a salt is formed. If the acid is fatty such as linseed oil, then the result is soap and water. Many building materials such as lime mortar and plasters, Portland cement and asbestos(…)
PAINTS AND VARNISHES FOR BUILDINGS
PAINTS A wide variety of raw materials are used in the manufacture of paints but they can be grouped according to their function. Medium, vehicle or binder are terms used to refer to the oils or resins or combinations of the two that form the basis of all paints. Linseed oil is an example of(…)