SBS (Styrene Butadiene Styrene) emulsive modified bitumen road cold sealant and preparation method thereof

Abstract

The invention discloses an SBS (Styrene Butadiene Styrene) emulsive modified bitumen road cold sealant and a preparation method thereof. Materials A and B are mixed according to a weight ratio of (30-40%):(60-70%) and sheared by a colloid mill to form the SBS emulsive modified bitumen road cold sealant, wherein the material A is prepared from the following raw materials in parts by weight: 3-5 parts of furfural extract oil, 3-4 parts of styrene-butadiene-styrene block copolymer and 91-94 parts of bitumen; the material B is prepared from the following raw materials in parts by weight: 1.5-2 parts of hexadecyl trimethyl ammonium bromide, 88-92.5 parts of water and 8-10 parts of Na-bentonite. The invention has the advantages that the SBS emulsive modified bitumen road cold sealant can be adhered to cracks for a long time when being used in the road engineering treatment process of road damage such as crack and surface void, is short in forming time and slight in shrinkage during preparation, and can prevent the secondary cranking in repaired positions.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to an SBS emulsified modified asphalt sealant capable of maintaining long-term adhesion to cracks and a preparation method thereof used in road engineering treatment of cracks, pockmarks and other diseases on the road surface. Background technique: [0002] Due to long-term use and damage to the natural environment, ordinary roads and expressways will suffer from various degrees of damage after a period of use, such as cracks and pockmarks on the road surface. Currently, most of the treatments for cracks and pockmarks on the road surface are There are following disadvantages in joint filling glue or excavation repair: First, the existing crack filling glue material is limited by the performance of the material itself, has no permeability and expansion, and cannot deal with small cracks and branch joints when cracks are treated , the water sealing effect is poor...

AI Technical Summary

Problems solved by technology

[0002]Due to long-term use and damage to the natural environment, ordinary roads and expressways will suffer from various degrees of disease after a period of use, such as cracks and pockmarks on the road surface etc. Most of the cracks and pockmarks on the pavement are treated by filling glue or excavating and repairing, which has the following disadvantages: one is that the existing crack filling glue material is limited by the performance of the material itself, and has no permeability and Swellability, it can’t deal with small cracks and branch joints when treating cracks, and the water sealing effect is poor, especially for the treatment of network cracks and cracks on the road surface, and the phenomenon of re-damage often occurs in a short time after repair , causing fatal damage to the road surface; second, the existing crack treatment materials are quite different from the properties of the pavement, and cannot be effectively combined to form a whole. Cracks are very easy to crack again, and can only be maintained for a short time after treatment. Such a seam will be processed repeatedly, which will consume a lot of manpower and material strength; the third is that the production process of the existing crack treatment materials is more complicated, and it is harmful to construction. The condition requirements are strict, and the construction is often affected by seasons, temperature and environment. In harsh environments, such as rain, snow, and strong winds, construction cannot be carried out, resulting in low construction efficiency; slow, and cause damage to the pavement structure, and the excavated waste has to be transported and disposed of, which does not meet the current energy-saving and environmental protection requirements advocated by the state

[0003] In addition, with the continuous deepening of people's research on modified emulsified asphalt, people began to use modified emulsified asphalt to repair cracks and pockmarks on the road surface, but The existing modified emulsified asphalt is produced by the latex method, resulting in a small solid content of the emulsified asphalt, and the sealant formulated with emulsified asphalt takes a long time to form, and is prone to shrinkage and new cracks, and the existing emulsified asphalt also has complex components. , High production cost and complex production process