Non-expansive fireproof sound absorption coating and spraying method thereof

Abstract

The invention discloses a non-expanding fire-proof and sound-absorbing paint and a spraying method thereof. The paint comprises the following components in the weight ratio: 40-50 parts of refractory cement; 10-15 parts of perlite; 30-40 parts of vermiculite ; 10-20 parts of mica; 10-20 parts of light calcium carbonate; The stone enables the coating to still be firmly bonded to the inner wall of the concrete when the fire is heated, and will not fall off. When spraying, first mix the components uniformly by weight at an air humidity of 85%; then put the uniformly mixed paint into a paint mixer when the ambient temperature is above 5°C and the humidity is below 90%. =1: (0.7~1) mixed into a slurry; filtered by a screen, sprayed with an extrusion mechanical sprayer to spray the concrete surface in the tunnel until it reaches the design thickness.

Description

technical field [0001] The invention relates to a fireproof coating, in particular to a non-expandable fireproof and sound-absorbing coating for a tunnel and a spraying method thereof. Background technique [0002] With the ever-increasing traffic volume and the complexity of transported items, the risk of fire in traffic tunnels also increases. And because the fire in the tunnel is often rapid and the temperature is as high as 1000 ℃, and the traffic flow in the tunnel is often dense, the space is small, the evacuation and rescue are difficult, and the poisonous gas is difficult to discharge, etc., it is more likely to cause serious fire accidents. Once a fire breaks out in the tunnel, it will burn out the fire box, fire sensor, vault cable tray, lamps, cable ducts in the side ditch and other facilities in the tunnel, and it will cause the concrete structure of the tunnel to burst or even Collapses, vehicles burned and casualties. [0003] Studies have shown that when the...

AI Technical Summary

Problems solved by technology

Because the fire in the tunnel is often rapid and the temperature is as high as 1000°C, in addition, the traffic flow in the tunnel is often dense, the space is small, the evacuation and rescue are difficult, and the poisonous gas is difficult to discharge, etc., and serious fire accidents are more likely to occur.

Once a fire breaks out in the tunnel, it will burn out the fire box, fire sensor, vault cable tray, lamps, cable ducts in the side ditch and other facilities in the tunnel, and it will cause the concrete structure of the tunnel to burst or even Collapse, vehicle burnt and casualties