Product Description:
Road lignin fiber, also known as wood cellulose or wood fiber, is an important raw material to produce hot mix asphalt mastic gravel mix (SMA), and in which the adsorption from asphalt binder to enhance adhesion and stability effect. It is chemically treated natural wood obtained organic fiber, the appearance of cotton wool, white or gray. Through screening, splitting, high temperature treatment, bleaching, chemical treatment, and screening into different length and thickness of the fibers to suit different needs. Since the processing temperature up to 260 锟斤拷, under normal conditions is chemically very stable material, not as a general solvent, acid and alkali corrosion, non-toxic, tasteless, non-polluting, non-radioactive high quality, does not affect the environment, harmless, is a green product, which is the other mineral fiber elements are not available. Ribbon fiber microstructure is curved, rugged, porous, the intersection is flat, good toughness, dispersion and chemical stability, water absorption capacity, there is a very good thickening crack resistance.
Lignin fiber main road performance
(1) reinforced the role of
In the SMA mixture blended fibers, fiber mix dispersed in a three-dimensional existence, like all kinds of steel fiber reinforced concrete, geogrid, geotextile reinforced materials like reinforced can play a role.
(2) dispersion
If there is no fiber, considerable amount of bitumen ore is likely to be micelles, can not be uniformly dispersed between the aggregate, the paving will be clearly visible to the road surface "oil spots" exist, the fibers can make micelles dispersion.
(3) the role of adsorption and absorption of asphalt
SMA mixture by adding fiber to the full role in adsorption (surface) and absorption (internal) asphalt, making increased use of asphalt, asphalt film thickening, improve mixture durability.
(4) the stabilizing effect
Fiber asphalt membrane in a relatively stable state, especially in the hot summer season, when the asphalt thermal expansion, the fibers will also be room for an internal voids buffer, not a free asphalt and weeping, for high-temperature stability is also good.
(5) thickening effect
Asphalt and mineral fiber material to increase the adhesion of the film by bonding, to improve adhesion between the aggregates.
Performance parameters lignin fibers
Product Type:
1.FB-200
Fiber content: 95%
PH: 6.5
Bulk density: 25-30g / L
Average length: 200um
Hygroscopic (water) rate: 4.5
Color: White
Dispersion: 99.5%
2.FB-500
Fiber content: 95%
PH: 7.0
Bulk density: 25-30g / L
Average length: 500um
Hygroscopic (water) rate: 4.8
Color: White
Dispersion: 97%
3.FH-500
Fiber content: 95%
PH: 7.0
Bulk density: 45-52g / L
Average length: 500um
Hygroscopic (water) rate: 4.5
Color: white
Dispersion: 97%
4.FB-900
Fiber content: 95%
PH: 7.0
Bulk density: 25-30g / L
Average length: 850-900um
Hygroscopic (water) rate: 5.0
Color: Gray
Dispersion: 95%
5.FH-1000
Fiber content: 95%
PH: 7.0
Bulk density: 20-25g / L
Average length: 1000um
Hygroscopic (water) rate: 6.0
Color: Gray
Dispersion: 92%
The role of lignin fibers in SMA pavement
Lignin fiber is the preferred SMA fiber stabilizer, is characterized by a high specific surface area, better binding, may play role in SMA pavement crack, barricaded the three-dimensional structure of the SMA mixture between fiber and fiber can serve to strengthen the role in the drying process of solidification or mechanical fiber reinforcement weakened, effectively reducing the low temperature cracking pavement; lignin fiber has good dispersion, after adding the right amount of fiber can micelle dispersion, to prevent road oil plaques; lignin fibers having good liquid forced suction force, lignin fibers can absorb 1-2 times its own mass of the liquid, and liquid adsorption 2-6 times its structure (oil absorption rate of up to five times its own mass) . In SMA mix asphalt materials can increase, asphalt film thickening; thickening using SMA mix, increase fiber adhesion between asphalt and slag, thereby increasing friction between the road surface and the tire ; lignin fibers have good stabilizing effect can pitch in a relatively stable state, especially in the hot summer months, the voids inside the fiber cushion, will not be free of asphalt at high temperatures and weeping.
Applications
Road lignin fiber for its excellent quality, ensuring uniformity and stability in the production, transportation, paving and compaction process mixed material. Improve the level of the asphalt pavement and durability, played a considerable role. For the construction of high-quality asphalt pavement laid the cornerstone. Road lignin fibers have been widely used in the construction of new and SMA asphalt pavement, fiber reinforced asphalt pavement, concrete pavement cover, permeable asphalt. As an extremely robust and high durability of the road for a variety of special traffic situation and the weather conditions are excellent adaptability. SMA is therefore less traffic conditions designed: -F1 Formula One racing track - highways and urban expressway, skid surface arterial roads - alpine region, preventing the temperature shrinkage cracks - airport runways, overpasses, ramps - heavy traffic road sections, heavy overload and overloading of vehicles sections - hot and rainy area roadways, parking lots - deck pavement, especially steel bridge deck - urban road bus lanes - urban road intersections, bus stops, parking lots, garages , port - in urban areas need to reduce the noise of the road, such as schools, hospitals, residential areas, etc., has been applied in 65 countries and territories around the world, including the continents of the highways, airport runways, as well as the best product experience Performance Formula One track. In China, we have "new ideas" road lignin fiber has been applied in some provinces and cities in the highway and the international airport.
New features of "new ideas" road lignin fibers
锟斤拷 against sliding wear resistance, fatigue resistance, high temperature rutting.
When 锟斤拷 continuous paving, pavement flatness, good seams.
锟斤拷 applicable to a variety of compulsory mixing machine.
锟斤拷 has good drainage.
锟斤拷 reduce noise, comply with environmental requirements.
锟斤拷 price is lower than similar products.
Performance
Use
Fine packaging of "new ideas" road lignocellulosic accurate, easy to use, when to use without opening the package, can be directly put in a mixing tank, and polyethylene packaging will dissolve on their own in the stirring. Stirring time is 3-5 seconds / kg, for a variety of compulsory mixer. Addition of only 0.3% of asphalt mixture, the specific amount depending on the type of bituminous mixtures with experimentally determined. According to mixing, the construction process requirements, the maximum mixing temperature up to 200 锟斤拷, paving temperature up to 180 锟斤拷.
锟斤拷 Note
New ideas lignin fibers can withstand more than 250 锟斤拷 ambient temperature is not bad, and does not cause pollution to the environment, not harm health.
Lignin fiber construction process should ensure that the fibers do not damp agglomeration and confirm fibers evenly dispersed in the asphalt mixing process.
Lignin fibers should be stored indoors or sheltered place in the transport and use of the process should be to prevent moisture, agglomeration, has been damp, clumping can not be dispersed when mixing the fibers may not be used.
Fiber Co., Ltd., Jiangsu Sisiyuan main production and operation of fiber, polypropylene fiber, polyacrylonitrile fiber, wood fiber, polyester fiber, lignin fibers, cellulose fibers, polypropylene mesh fiber, fiber wall clothing, high-strength polypropylene wire, high-strength polypropylene yarn twisting, spinning step silk, silk high-strength polypropylene, high-strength polypropylene line, polypropylene line, colorful wall clothing fibers, concrete special polyacrylonitrile fiber, anti-rutting agent, machine stitching, needle work lines, twisted sideline, Container lines, tied note lines, kite lines, shoes, feed line, ball line, polyester staple fiber lines.