Technology background
Efflorescence is a problem that occurs in various materials (ceramics, specific, plaster), coming into contact with moisture and permit the crystallization of compounds on its surface. Efflorescence besides causing an undesirable aesthetic appearance, especially by the formation of whitish powdery deposits and, causes the degradation of the material surface, making it brittle and crumbly. The start of this degradation phenomenon with the naked eye is not noticeable. After some time the white crystals are quite visible and little can be done to recover the piece after this time.
Technology description
It developed a portable apparatus and a method for determining the presence and quantification of efflorescence on surfaces subject to manifestation of this phenomenon. The device consists of a system, able to illuminate the area of the sample evenly, in a specific angle, and collect colorimetric data based on the CIELAB method, a computer for processing the collected data and calculating the colorimetric difference, to determine the presence and degree of efflorescence present on the analyzed surface.
Problem Fixed
There are methods to determine and quantify the presence of efflorescence in their early, or even after its development, or indicate the severity of this phenomenon, and only made a visual assessment. Currently, is observed with the naked eye the white spots on the surface of the pieces, but in general, this time it's too late to prevent their progress and the part must be replaced. If recognized logo, You can take steps to prevent its spread preventing the loss of part.
Advantages
The device enables the identification and quantification of the phenomenon of efflorescence, in its early stages, before being visible to the naked eye.
Applications
– Identification of the presence of efflorescence on surfaces, in isolated parts, loose, or even already installed on walls and floors.
– brick production quality control (determination of clays burning color).
– Inspection walls, walls, floors, any type of ceramic material for the presence of efflorescence.
– Inspection of historic buildings.
– ceramic industry, construction.
Nível de Maturidade da Tecnologia (TRL – Technology Readiness Level)
Status of the technology
Patent filled by INPI.
Inventors
Annelise Kopp Alves
Felipe Amorim Berutti
Adaiane Parisotto
Vinicius Lampert
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