the fireproof limit is high
cohesiveness strong
protect environmental
the water, acid and alkali resistance
The BF tunnel fire protection coating is our company research institute, in the domestic many fire scientific research courtyard institute and the domestic some large-scale fireproof material factory assist under the support to complete, its collection each kind of fire protection being flame-resistant material's different characteristic, becomes in view of the concrete structure performance characteristic development. Its main performance characteristic displays in: The cohesional strength is high, the water resistance is good, the coating thin fireproof limit is high, physics and chemistry performance is good and so on. The product quality target through the country fireproof construction material quality surveillance test center's quality detection, has been suitable for the road, the railroad, the subway crosses the river concrete structures and the steel structure and so on tunnel and understructure work fire protection protection.
BF tunnel fire protection coating main feature: the fireproof limit is high, cohesiveness strong, pays great attention the environmental protection, the water resistance, to bear the acid and alkali, the construction to be convenient, the craft is mature.
Main performance index (according to GA98-2005 standard examination)
project | Technical specification |
vessel's condition | Iron grey pellet, powder lot mixture |
drying time | 24h |
dry weight density | 650 |
cohesional strength | 0.2 |
water resistance | After the 720h experiment, the coating does not crack, the aliquation, to fall off, the permission swells with is a color slightly kali resistivity |
acid resistance | After the 360h experiment, the coating does not crack, the aliquation, to fall off, the permission swells with is a color slightly |
kali resistivity | After the 360h experiment, the coating does not crack, the aliquation, to fall off, the permission swells with is a color slightly |
thaw-freeze cycle | After 15 experiments, the coating does not crack, the aliquation, to fall off, color deterioration |
fireproof performance | Coating thickness reaches 11-13mm, the fireproof time is 2 hours |
The construction methods
1, The cleaning up concretes surface sundry goods, the greasy dirt, clean cleanly with the high-pressured water.
2, Spray coating together special-purpose primer material.
3, BF tunnel fire protection coating according to coating: Water =100: 80-90 proportion mixes are even, mechanical agitation 5-8min.
4 Carries on the spray coating with the spraying machine, air pressure 4-6kg/cm, the first thickness approximately about 3-5mm, after dry 24h, the spray coating second, third until meets the design thickness standard requirements.
5, After the spray coating or wipes spreads 30min, with the steel trowel will paint the surface pressure to be even, not smooth place makes suitable patching.
6, The coating construction completes, must carry on the maintenance. In the painting surface spraying of water, then the natural drying, maintains the time 28 days every day.
Note
1, at different times spray coating
Because spray coating smoothness is each time different, under the multiple spray coating, the whole can level artisticly finally.
2, recycles
In the spray coating has the ration coating to fall down, if needs to take back, must before has not done recycles the use, after doing, do not use.
3, maintains
The coating spray coating in 15th must maintain the coating surface is moist, strengthens coating each performance.
4, the agitation coating must use up in 4 hours, the recycling material cannot the independent use.
The packing and transport
1, It should use cleanly, dry, the seal packing material. Packing: 30kg, 40kg, 50kg.
2, When transportation, should have against exposes to the sun the rainproof measure.
3, It should deposit in ventilates, dry, prevents the sunlight direct radiation in the storehouse, the normal temperature storage time is 6 months.
Our company not only product coating ,but also make engineering, As so far we make the BaoTian freeway engineering, Hanzhai tunnelling works, ShanShengmiao tunnelling works ,the 310 national roda of LiJiashan tunnelling works,etc.
