Introduction of HL-KCZJ anti-rutting additive:

The development speed and economic investment of China’s high-grade highways are second to none in the world, but most highways have only three or four years of service life, and some have suffered serious damage within a year, making the country’s human and material resources The investment is too large. The rutting problem usually occurs in the first summer high temperature period. The rut depth of some roads is 10-50mm, and some even reaches more than 100mm. This makes the road smoothness worse, and network cracks, potholes, and pits appear soon. Groove and other diseases. Among the main diseases of asphalt pavement, rutting is particularly common, and the damage to the pavement is also serious, which greatly increases the repair cost of the pavement. The HL-KCZJ anti-rutting agent developed by Jiujiang Heli Fiber Technology Co., Ltd. by the relevant scientific research institutes of the United Nations provides an effective, practical and economical means to solve the rutting phenomenon of asphalt pavements.

1. The basic performance of HL-KCZJ anti-rutting additive

HL-KCZJ anti-rutting agent is dark, solid and granular.

Table 1-Characteristics of HL-KCZJ anti-rutting additives:

Project indicators

Particle size (mm) is not more than 6mm

Density (gr/cm3) 0.91～1.10gr/cm3

Softening point (℃) 140～150℃

Melt index (g/10min) 7----10

The anti-rutting agent is a fiber polymer, wherein the fiber polymer component is greater than 95%, and the filler component is less than 5%.

2. The mechanism of action of HL-KCZJ anti-rutting additive

HL-KCZJ anti-rutting additive realizes the modification of asphalt mixture through the following four functions:

1. In the mixing pot of the asphalt mixture, at a temperature of 170-180℃, first dry mix with the mineral material to soften it, then continue to add the asphalt to mix, the additive particles and the asphalt form a cementation effect, so that the asphalt performance is improved. Improve the softening point of asphalt; reduce the sensitivity to temperature; increase the adhesion of asphalt and mineral aggregates.

2. Intercalation: The additive particles are softened due to the high temperature during the construction process. These particles are thermoformed during the rolling process, which is equivalent to a single particle size fine aggregate with high adhesion, which is filled and extruded into the aggregate skeleton. The voids in the asphalt mixture increase the skeleton effect of the asphalt mixture structure, strengthen the interaction between the mixtures, make the mixtures closer together, reduce the permeability of the formed pavement, and increase the load capacity of the asphalt mixture. Capability cementation: Additive input.

3. Reinforcement: Because the microcrystalline area formed by the polymer in the additive has considerable stiffness, it is partially drawn into plastic fibers during the mixing process, and bridges and cross-links in the aggregate skeleton to form fiber reinforcement. Due to the existence of polymer fiber, it forms a network in the cement, which strengthens the interaction and integrity of the asphalt mineral cement system.

4. Deformation recovery effect: The elastic component of the rut king asphalt mixture additive has the function of elastically recovering the deformed part of the road surface at higher temperatures, thus reducing the permanent deformation of the formed asphalt pavement.

HL-KCZJ anti-rutting additive goes through the mixing process with the mixture. Under the combined effect of the collision and shearing of the hot mineral material, the particles promote the additive to realize the four action processes, change the performance of the asphalt mixture, and achieve improvement and improvement.

3. HL-KCZJ anti-rutting additive addition amount and addition process

The dosage of HL-KCZJ anti-rutting additive is 0.3-0.5% of the asphalt mixture. That is, 3~5kg is added to each ton of asphalt mixture. For roads, it is generally mixed with 0.35-0.4%, that is, 3.5-4kg per ton of asphalt mixture. The traffic volume is large, and the high limit is used for heavy vehicles. Special sections can be mixed with more than 0.6%.

4. Application scope of HL-KCZJ anti-rutting additive

Highways, heavy traffic roads, vehicle intersection areas, airport runways, bus lanes, industrial grounds, container stacking sites and other roads and sites that require heavy loads.

The use process of HL-KCZJ anti-rutting additive is convenient and simple. It can be directly added in the asphalt mixture mixing process:

1. When the mineral material is heated to 170～180℃, directly put the additives into the mixing pot for dry mixing, the mixing time can be increased by 2～3 seconds

2. Add hot asphalt and continue mixing, the mixing time can be relatively increased

3. The quality control, storage and transportation of the finished mixture are carried out according to the conventional mixture