APLICATION ON CONCRETE
Rectangular pits or equipment (such as smokestacks and tubes) of more than two meters of diameter and that they have 2 access records of more than 500mm width can be coated internally, also trenches of more than 25 cm wide can be coated, the coat can be applied on new or used concrete and concrete even with previous coating.
The current coat will be removed and the status of the concrete surface will be evaluated, issuing a written report. If in some sides of the pit the old reinforced coat is extremely stuck, it won´t be removed by hitting or levering, because break the concrete would be a risk; this will be mechanically smoothed by polishing and sanding, preparing the surface for the adequate anchoring of the new coat.
In case that the Surface is severely damaged for water infiltration and concrete deterioration, A repair will be necessary and will be carried out by another specialized contractor.
In case that the concrete is damaged only superficially and not structurally, the cracks and irregularities could be fixed by means of the polymeric concrete application, this is a mixture of resin polyester, fiberglass and silica dust and thixotropic agents
Once the Surface is ready, the fiberglass reinforced plastic coating can be applied
PREPARATION OF THE CONCRETE SURFACE
Once the previous operation was performed, the Surface should leave dry completely and this is how is possible to apply the reinforced plastic.
If the pit corners are manufactured in right angle, could be rounded by means of the application of filler (plaste) of polyester resin and loads to improve the Surface coating anchoring.
A USA imported Reichhold Chemicals Inc Atprime 2 based chemical anchoring will be applied, this is a primary system of two polyurethane components, developed to improve the reinforced plastic adhesion to substrate concrete avoiding peeling and subsequent cracks.
MATERIALS SPECIFICATION AND PROCEDURE
The reinforced plastic coating is made with polyester or vinylester resin according to the fluid to be stored, in flexible formulation and low shrinkage, developed especially to avoid cracks.
It´s reinforced with 2 or 3 coats of 457 g/ m² fiberglass mat. In function to the operation conditions
A fiberglass anticorrosive barrier is applied on base of 45 g/m² fiberglass Surface veil type C of high chemical resistance imported from England.
Application by contact molding system (hand layup) according to the international regulations ASTM C-582-84, ASME RTP-1-95 and NBSPS 15-69.
The coating thickness is 2.2 or 3.2 mm (according to the coats number) and it´s totally guaranteed against cracks and breaks
Additionally. An anchoring mechanical system of coating to avoid the concrete detachment will be applied, using 1 ½” large steel spikes fixed by shot of gunpower cartridge with a 1½” diameter flat washer. Which will be totally encapsulated in reinforced plastic.
WE REQUIRE OF THE CUSTOMER THE FOLLOWING
o carry out the coating service, we require of the customer the following:
To stop the equipment operation
To clean totally the equipment
To keep the surfaces and work area dry, otherwise the service could not be carried out because the reinforced plastic materials doesn´t polymerize with humidity or dust.
Energía eléctrica de 110 Voltios al pie de la obra.
Security warehouse to store materials and tools
To guarantee not to use the equipment, until EFISA approves by writing the use of the equipment
To indicate the detailed list of the internal requirements so our personnel, materials and equipment could to obtain without delay the entry and exit authorizations to your site. Such as; documentation, labor situation, security equipment, security training, register in your warehouse, etc.
145 m³ pit cover
Interior coating of pit for separation of oils
Water pit coating for brewing
EQUIPOS DE PROCESO
+52 (33) 1268 8686
Leslie Prado Atrián
+52 (33) 1116 7121
+52 (33) 3676 6045
Armando Martínez Sánchez
+52 (33) 1520 2229
Jose Luis Díaz Torres
Technical Sales & Engineering
+52 (33) 1799 8127
Melissa Quiñones Pérez