Simple ST double chipping sprinkling
Double ST with pre-laid spreading
Surface treatments for road maintenance are thin asphalt layers that are produced by spraying bonding agents and scattering chippings on location. Various, skilled steps and the sequence thereof lead to a large number of possible treatment variations, which speaks for this type of construction.
Basic principle of surface treatment:
Step 1: Pre-clean – To ensure clear contact between the bonding agent and the surface.
Step 2: Applying the bonding agent – The bonding agent is sprayed onto the surface from a low height using a ramp spray machine. Our vehicles provide even, lateral distribution of the bonding agent.
Step 3: Chippings – Premium chippings are applied to the surface. This is done with travel- or speed-dependent controlled wide chipping spreaders, that have an extremely low drop height. This step can also be performed in one step using our modern paving units.
Step 3: Rolling – The applied aggregate is generally rolled by rubber wheeled rollers so that individual rock particles flatten and are pushed into the base layer thereby increasing the adhesion between the individual grains and the bonding agent.
Only perform work during dry weather with air and surface temperatures above + +5 °C. When after-treating hydraulically bound layers, the sprayed areas is generally sprinkled with about 8 kg/m² premium chippings to guarantee further driving capacity during the construction phase. Spraying temperature: cold to 50 °C, starting t 30 °C when using spray bars.
ESTOL- C 60 B1 N: 0,8 bis 1,1 kg /m²
We produce almost all varieties of bitumen emulsions and process them with our own machines as a complete or regi performance. We also sell them in servicetanks, combi-patchers, drums and small containers.
But what is a bitumen emulsion?
A bitumen emulsion is a mixture of bitumen, water and various emulsifiers. Both road building bitumen and polymer modified bitumen can be used for the production. Depending on the type of bitumen emulsion, the proportion of bitumen may be between 40 and 70 percent.
We would be pleased to advise you which bitumen emulsions are suitable for which substrate, road conditions and weather conditions.
What is the advantage of bitumen emulsions?
Bitumen emulsions are among the most frequently used raw materials in road maintenance as they provide many advantages. Among the most important are:
- no toxic solvents
- no risk of burns or fire
- no risk of explosion by solvent fumes
- only release water when set
- do not penetrate the ground
- are processed “cold” and therefore save energy