Publications

February 14, 2017

Emulsion Facilities and Bitumen Emulsion Production Technology

Bitumen Emulsion Production Technology. Emulsion facilities consist of energy, process and auxiliary equipment required for emulsion production. Depending on the objectives, the facilities may be stationary or temporary.

The main feature of stationary facilities is the capability to serve several automobile roads within a region. Emulsion from such facilities is delivered to customers by automobile sprayers, tankers or by railroad.

Emulsion facilities usually include:

means of raw...

February 14, 2017

The Origins of Asphalt Emulsions

The term ‘asphalt emulsion’ was coined in 1890, when this material was first patented. However, asphalt emulsions found no practical use for the next 30 years.

The French scientists were the first to develop methods of emulsion production and application. It was them, who first used “emulsified and saponified” heavy oil fractions in ammonia water. A year later, to prevent accidents due to the clouds of dust...


February 14, 2017

Bitumen Production Processes

Experience of the world bitumen production industry shows that the following processes are viable for bitumen production:

concentration of oil residue for vacuum distillation. Inert gas or steam are used in the process. Atmospheric distillation is used for production of residual bitumen from asphalt-resinous oil; oxidation of various oil residue with air oxygen at 180-300ºС. Such residue can include flux oil, tar, oil pitch, deasphalting asphalts, cracking residue etc; desaphalting of...

February 14, 2017

Residual Asphalt Production

Production of residual asphalt is one of the most simple and economic technology. To determine if a specific type of crude oil can be used for residual asphalt production, the yield of the material with penetration 100 by 0.1 mm at 25ºС must be assessed.

Residual asphalt production is economically viable if product yield is 10-20%. Vacuum distillation materials, which consist of organic and heterogenic compounds, most...


February 14, 2017

Petroleum Bitumen in Road Construction

Petroleum Bitumen is one of the major outputs of oil refining. It has many uses: repairs of roads and airfields, road construction, civil and industrial construction (roofing materials, piping production, production of paint etc). Of the above, road construction is where bitumen is used most extensively.

The cover of roads and airfields made with this binding material are stronger and safer, as well as 2 to 2.5...


February 14, 2017

Bitumen Emulsion Applications

At present, bitumen emulsion found a multitude of uses in road construction: gravel coats, gravel roads, asphalt road top and binding of dust on dirt roads.

At the same time, this construction material can be used in some other road construction applications, such as:

patch repairs; preparation of cold storage mixes; surface treatment; thin protective layers; cold emulsion-mineral mixes; tack coats.

Bitumen emulsion applications are not limited to road construction and repairs....


February 14, 2017

General Information on Bitumen Emulsions

Bitumen Emulsions. A bitumen emulsion is a construction material with high adhesion properties with particles of 1 micron or less. The basic color of bitumen emulsion in brown, but may vary from light to dark depending on dispersion.

The emulsions most commonly used in construction are those with 50-55% bitumen. Among the most important properties of the material is sufficient viscosity, good storage stability and temperature from...


February 13, 2017

Petroleum Bitumen Applications

Bitumen Applications. Bitumen is one of the most common organic binders. Due to its properties it found wide use in construction and repairs. Bitumen is a watertight, chemically stable material, which softens when hot and sticks to wood, metal, minerals and plastics.

Bitumen is the main binding material in construction and repairs or road top.

Depending on the use, bitumens are divided into groups:

road construction (most...

February 13, 2017

Bitumen Emulsion Production Units

Bitumen Emulsion Production. Bitumen emulsion was first made in Europe in the beginning of the 20th century. With time, new equipment was developed to improve efficiency of production and the quality of the product.

At present, bitumen emulsion production is a complex physical and chemical process which requires special equipment.

Advantages of bitumen emulsions

There are currently two competing materials in road construction and repairs: bitumen and...


February 13, 2017

Bitumen-Polymer Binder Production

Binder Production Binder Production. There are several options of bitumen-polymer binder production, but almost all methods include heating and mixing.

The most efficient methods known today employ dispersers (colloid mills) which evolved from regular agitators in bitumen tanks. In theory, bitumen-polymer binder can be made in any bitumen tank with a certain amount of polymer added. The mixture is stirred until the modifier fully dissolves. The total...


February 13, 2017

Bitumen Production

Bitumen Production. Various types of crude oil are used for production of bitumen, and all the process occurs at refineries.

The process of oil refining includes fraction distillation, which results in the production of light oil products, such as gasoline, kerosene, ligroin, lubricants etc. After removal of lighter fractions, oil residue remains which is then used to make bitumen.

There are several methods of bitumen production:

Concentration...

February 13, 2017

Types of Road Construction Bitumen

Road Construction Bitumen. Bitumen, as a road construction material, must meet certain requirements to ensure long service life of the structures.

There are three types of road construction bitumen: I, II and III.

The behaviour of type I bitumen is defined by the coagulation structure of asphaltenes, which enlarge in aromatic hydrocarbons and interact through the thin membranes of the dispersion phase.

At higher temperatures,...


February 13, 2017

Water Bitumen Emulsion

Water Bitumen Emulsion. Emulsion, in general, is a dispersed system which consists of small droplets of a fluid evenly dispersed in another fluid. In the case of bitumen emulsion, the droplets of bitumen are dispersed in water, which also contains a surfactant emulsifier.

Depending on which fraction is dispersed, emulsion can be direct (oil in water) or reverse (water in oil).

Emulsifier also plays an essential...


February 13, 2017

Classification of Bitumen

Classification of Bitumen. Natural bitumen is a dark brown material, usually solid at room temperature.

Due to its physical and chemical properties, this material is widely used in construction and repairs, such as:

roofing; waterproofing; construction of structures; road construction.

Beside, bitumen is used successfully in production of rubber, paints and cables.

The raw materials for bitumen production are usually the residual products of crude oil refining, such as...


February 13, 2017

Asphalt Emulsion Production Technology

Asphalt Emulsion Production. An asphalt emulsion is a dispersed system which consists mainly of water and asphalt. One substances is dispersed as droplets in the other.

Asphalt is pulverized using special devices, such as colloid mills, also referred to as dispersers or homogenizers.

In the general case, the asphalt emulsion production process using a colloid mill is as follows. At the first stage, asphalt is pulverized....


October 10, 2016

Horizontal Bitumen Storage Tank

Own storage and preparation of bitumen has a number of advantages for a business. Owning bitumen storage and boilers allows one to create and replenish material stock without fear of market fluctuations and supply disruptions. There are various types of bitumen storage and heating systems.

GlobeCore offers equipment optimally adapted to your business and your technology process.

Bitumen storage is an important part of any bitumen...


October 5, 2016

Functions and Application Methods of Bitumen Emulsions: Water Phase Section

Different types of bitumen emulsions are used, for the most part, in the construction fields. Among the main ways to use them (bitumen emulsions) are the following:

use it as tack coat for the base for an old road before covering it with asphalt; for preparing cold bitumen concrete mixes; for construction of thin protective top layers; for pothole road repairs; for waterproofing of buildings;

for construction and repairs of soft roofs.


October 5, 2016

Polymers and Bitumens Compatibility

In the process of bitumen modification with polymers, the compatibility of the materials must be taken into consideration. Not all polymers and bitumens are compatible with each other.

Thermodynamic compatibility is the situation when the phase state of bitumen and polymer is the same. That is why solubility plays an essential role. It is determined by many factors, mainly the following:

difference of polymer solubility parameters and polymer...

September 1, 2016

Sulfur as road bitumen modifier

Oil residuals were treated with sulfur to get sulfurated bitumens about 100 years ago. But introduction of air-rectified bitumen production technology has significantly limited sulfur application in this area.

This chemical element is able to remove hydrogen and transform ordinary links into double links. The unsaturated compounds formed are polymerized with time.

If sulfur is added to bitumen, its content in asphaltenes rises significantly. It is...


September 1, 2016

Monodispersed emulsions

Based on the degree of dispersion all bitumen emulsions can be divided into poly- and monodispersed emulsions. In most cases, road bitumen emulsions are polydispersed but it doesn’t mean than monodispersed emulsion doesn’t have any applications. Monodispersed bitumen emulsions help to make materials with high optic properties and coloured materials with a minimum amount of dye.

Dispersion influences many properties of bitumen emulsions. including viscosity and lability....



 

обновлено: August 15, 2017 автором: Antonia Globecore