MMA color skid paving, so that tunnel access safer!
Data show that the number of highway tunnels in China has already exceeded more than 15000. Because of the special traffic environment, the tunnel is also accident-prone section, prone to rear-end collision and bicycle impact tunnel wall accidents. There are 15,181 highway tunnels in China, with a total length of 14,039,700 meters. It is the country with the largest number of highway tunnels and the longest mileage in the world. Highway tunnels play an active role in shortening driving distance and improving speed, but there are some hidden dangers in traffic safety. Compared with open sections, highway tunnels have the characteristics of closure, poor sight, small space and difficulty in rescue. Once traffic accidents occur, the traffic capacity and safety of the whole highway tunnel will be affected, and the safety of life and property will be threatened.
There are several factors causing tunnel accidents.
1. With the increase of the length of highway tunnels, the probability of traffic accidents is increasing.
2. Influenced by "white hole effect" and "black hole effect", traffic accidents are most likely to occur near the entrance (including entrance lighting section and exit lighting section) of highway tunnel.
3, motor vehicle rear end collision is the most frequent traffic accident, accounting for 60.1%; bicycle hit the wall second, accounting for 20.1%;
4. Small buses and large trucks account for a large proportion of the types of vehicles that cause traffic accidents in highway tunnels. Among them, light chassis cars and vans are the main types of small buses, heavy trucks are the main types of large trucks, and most of them are overloaded and overloaded.
5, speeding and freezing, rain and snow weather are the main factors leading to traffic accidents in highway tunnels.
With the promulgation of "Detailed Rules for Design of Highway Traffic Safety Facilities" by the Ministry of Transportation on January 1, 2018, the existing tunnel facilities will be greatly improved, and the occurrence of tunnel traffic safety accidents will be minimized. Among them, the traffic marking of tunnel entrance and exit is set as color anti-skid marking, which makes clear the necessity of color anti-skid pavement at tunnel entrance and exit.
Because of the strong outdoor light before entering the tunnel and the rapid darkening of the light after entering the tunnel, people will have a short visual decline or even a short blind area in the course of driving, which is very prone to traffic accidents at this stage. Detailed rules are issued to make it clear that color anti-skid materials should be added before entering the tunnel. Bright color anti-skid pavement materials can warn the driver's license to pay attention in advance. Vibration of vibration marking can slow down the driver slowly. Color anti-skid pavement materials have excellent anti-skid performance and can effectively shorten the brake in emergency situations. The distance between vehicles greatly reduces the occurrence of safety accidents.
With the wide application of color anti-skid pavement technology, various kinds of color anti-skid pavement materials emerge in endlessly. Due to the complexity of special roads, such as mountain areas, cold areas, sharp bends, steep slopes, and ground conditions, most anti-skid pavement materials are lack of ground conditions and materials after construction. Departure, peeling, peeling, damage and other phenomena will occur under the influence of traffic volume. Durability will be affected, thus reducing the service life. Various materials are flooding the emerging market, which brings troubles to road managers. The emergence of MMA color anti-skid pavement material of Best Company has thoroughly solved these problems, and has been quickly recognized by the vast number of managers and road users for its superior performance.
Why choose MMA color skid pavement
Characteristics of MMA resin
Fast curing
Solidified within 1 hours, and the premixed aggregate is not easy to fall off.
Low temperature curing
Sub zero (minimum -30 degrees) temperature can also be normal construction curing.
UV resistance
After curing, it has excellent durability to ultraviolet (no discoloration).
Excellent adhesive force
Excellent adhesion to concrete surface, asphalt pavement surface and steel surface.
Excellent waterproof performance
It has super strong waterproof performance.
Heat resistance and high temperature resistance
Excellent heat resistance and high temperature resistance, maintaining super durability on high temperature paint road.
Chemical resistance
Excellent acid resistance and alkali resistance.
Environmentally friendly
VOCs emissions are lower, and do not contain heavy metals and other harmful substances.
Comparison with other reactive resins
partition
Solventless epoxy resin
polyurethane
MMA
Mixing ratio
The ratio of A agent B is strict.
The ratio of A agent B is strict.
Addition of catalysts for accelerated reaction and additives for accelerating the curing speed
viscosity
Temperature change of sensitive reaction
Temperature change of sensitive reaction
10 degrees below zero and 30 degrees above zero.
Additive (curing agent)
Accurate matching according to temperature requirement
Accurate matching according to temperature requirement
Not affected by temperature.Catalyst can be added at zero temperature.
Construction site temperature
5℃ ~ 30℃
5℃ ~ 30℃
-30℃ ~ 40℃
environmental effect
Chlorine gas is generated during curing reaction.
Chlorine gas is generated during curing reaction.
Whitening powder after construction
No harmful substances are produced on the human body and no gas is produced during construction.
humidity
A little sensitive
Very sensitive
A little sensitive
Chemical resistance
It has a little acid resistance, alkali resistance and solvent resistance.
It has a little acid resistance, alkali resistance and solvent resistance.
It has strong acid resistance, alkali resistance and moderate solvent resistance.
Risk of fire
Toxic gas in fire
Toxic gas in fire
Do not produce any poisonous gas.
Mechanical strength display time
It takes about 24 hours.
3 ~ 7day`s
1 hour
Time required for release after construction
2 hours
12 ~ 48 hours
1 hour
elongation
1.5 ~ 3%
6 ~ 10%
5 ~ 10%
Compressive strength(㎏/㎠)
400 ~ 450
400 ~ 700
400 ~ 800
Surface whitening powder phenomenon
Yes
Yes
no
Durability (service life)
1~2年
1~2年
5年以上
It is believed that the wide application and popularization of the technology of Best MMA color anti-skid pavement will provide a safety barrier for road tunnel driving!!!