Road construction industry

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January 6, 2017

Colloid Mill for Bitumen Emulsion Production

Bitumen Emulsion Production. A colloid mill is a special device which performs superfine pulverization of materials. Using colloid mill allows to produce particles of one micron or even smaller.

The first colloid mill was designed by K. Plausson in the first half of the 19th century. It consisted of a stator, a rotor and a body. When particles enter the gap between the rotor and the stator,...

October 5, 2016

About functions and methods of the bitumen emulsions: block the aqueous phase

Different types of bituminous emulsions are mostly used in the construction industry. The main areas of application are following:

  • priming of old pavement before applying asphalt;
  • preparation of cold asphalt mixtures;
  • surface treatment of road surfaces;
  • thin protective layers;
  • patching roads;
  • waterproofing of structures;
  • installation and repair of soft roofs.

The main advantage of bitumen emulsions in comparison with conventional...

Dispersed Systems and Equipment for Dispersion

Most substances used in households and industry are dispersed systems (solid particles or droplets suspended throughout another substance) or solutions, where mixing takes place at the molecular level. Examples of suspensions are mortar mixture, paint, white glue or bitumen emulsion used for waterproofing works.

What is bitumen emulsion?

Bitumen is a hydrocarbon resin (derived from petroleum) which solidifies in the air at normal temperatures, forming a watertight flexible film. The...

May 16, 2016

Bitumen Emulsions for Road Construction

The main objective of laying asphalt concrete mixtures as a road surface is to ensure its adhesion to the bottom layer.  A practical solution to this problem is -using bitumen emulsions.

Bitumen emulsion disperse system consists of: bitumen and water.  Thus the smallest particles of bitumen are dispersed in water without being mixed with it.

According to the type of emulsifier, all emulsions are divided into two types: cationic and anionic.  Road...

December 29, 2015

Modified bitumen emulsions and production equipment

Bitumen is a unique blend of hydrocarbons and their derivatives that are widely used in construction, from residential and industrial structures to highways and runways.  While bitumen can be replaced with materials of similar composition, replacing it with something of similar cost is virtually impossible.  Bitumen has been used in construction for centuries.  During this time, due to its excellent binding abilities, builders have come to greatly appreciate bitumen’s qualities....

Colloid Mills for Water Bitumen Emulsion Production

Water-bitumen emulsion is highly appreciated by building and road construction companies.  This is due to  its ease and safety of use  in comparison with the mixtures based on solvents of and from petroleum products such as kerosene.  As a rule, water-bitumen emulsion is obtained by blending liquid bitumen with water  and special emulsifiers and acids.

Having years of experience in designing and building blending machines and bitumen emulsion units, GlоbeCоre is...

Bitumen Emulsion Production Units

As a rule, bitumen emulsion is made by colloid mills, but many industries apply other units that allow for dispersion.  In colloid mills, the mixture of hot bitumen and water phase are passed between a rotor in full motion and a stationary stator.  There are special claws and slots on the surface of the rotor and stator that provide for turbulent flow.  There may be batch and continuous bitumen emulsion...

July 13, 2015

Modified Bitumen Production Units

The application of polymers makes original bitumen available for application under unfavourable climatic conditions and heavy loads.  Often, the so-called SBS-polymers (styrene-butadiene-styrene) are used for bitumen modification.  By its nature, they are caoutchouc (rubber).  Interacting with bitumen, SBS-polymers increase their flexibility, elasticity and strength.   Such polymers reduce the binder’s sensitivity to extreme temperatures and allows for significant improvement of its performance characteristics compared with unmodified bitumen.

The compatibility of...

July 9, 2015

Equipment Manufacturing Bitumen Emulsion

Heated bitumen yields the superior position to bitumen emulsion in road construction projects. Emulsions have better adhesive properties, are more easily spread over the road surface cover, and can be laid on a damp base.  Due to high penetration rates, emulsions easily fill the cracks and irregularities in the roadway.

Modern, technologically advanced equipment is required for the quality production of bitumen emulsion products.  The production line for manufacturing...

May 7, 2015

GlobeCore’s UBV-1 Bitumen-Emulsion Equipment is the Best Solution to Today’s Road Construction Problems

It is has always been difficult to provide a competely effective road surface pavement because of the wide range of factors such as:

(1) short road construction seasons;

(2) unpredictable and unfavourable weather conditions;

(3) shortage of financial resources;

The situation had remained unchanged for a long period of time, but recent developments with bitumen emulsion products has made it possible to extend the service life of road surface pavements.  This construction material has...

January 19, 2015

Road-Building Project Using Bitumen Emulsion

Bitumen is an important adhesive component of mixtures used in road construction projects.  This substance is used only in a liquid form therefore, it must be subjected to heating.

As much as 70% of bitumen emulsion is made of the solid substance called bitumen.  The particles of the bitumen are suspended in water.  Additionally, bitumen emulsion retains all of its binding properties even at room temperature.

When used in paving, bitumen emulsion...

January 19, 2015

Cоllоidаl Dispersion or Effective Road Surface Pavement? What is Bitumen Emulsiоn for Road Construction?

Bitumen emulsion for road construction is a colloidal dispersion consisting of two components, bitumen and water that do not blend.

The emulsion for road construction is made by the dispersion of bitumen in water solvent of emulsifier.

The performance characteristics of the latter influences the process of bitumen emulsion production.  One way (direct) is that bitumen is dispersed in water.  The other one (reverse) is that drops of water are distributed in...

January 19, 2015

Innovations in Road Construction: What is the Benefit of Using Bitumen Emulsion?

In the road construction industry, bitumen emulsion is used more often than bitumen.  This cohesive material was invented in the USA and it has been used for over half a century all over the world as one of the chief components of  modern road construction materials.

Bitumen emulsion serves as the cohesive material for the tack coat.  The physical characteristics of bitumen emulsion are as follows:

  • dark;
  • sticky;
  • smelly; and
  • hard when dry.

Substance Matter; this...

December 19, 2014

Bitumen emulsions in road construction

The rapid technological and scientific development changes the traditional compositions of bitumen emulsion. In combination with progressive technology, these allow to produce a wide spectrum of emulsified materials with improved performance in comparison with traditional asphalt technology.

Research of the trends in bitumen material development shows some of the most promising directions, such as:

– production of multiple emulsions with structure similar to inverse emulsions. The production is possible by preparing reverse...

December 19, 2014

Development of bitumen emulsion production

A new age in road construction began on 9 May 1922. Hugh Alan McKey registered the first bitumen emulsion patent. Within several years the application of this new material significantly changed road construction.

The amount of bitumen emulsions made in France in 1923 was several hundred tons. In 1924 it increased to 2500, and to 6000 tons in 1925. Other countries followed. By the end of 1926 the total amount of...

December 19, 2014

The history of bitumen emulsions

Bitumen emulsion were first tried as a road construction material in the beginning of the 20th century. Originally, the use of emulsion was limited due to low experience and knowledge in the area of emulsion formation, mixing and the technology of emulsion production and application. With time, the use of emulsion grew steadily from the 1920s to 1950s.

It was in the mid 1950s when the rapid increase of traffic load...

December 19, 2014

Road top with anionic emulsions

Each year more construction materials are used for construction of roads, mostly asphalt concrete based on bitumen binder.

Traditional production process for road top with hot materials has been used in road construction since the middle of the previous century; it takes a lot of energy and is not very environmentally friendly. Therefore the use of anionic bitumen emulsions is considered by the specialists as very promising. It allows to transfer...

December 19, 2014

Bitumen emulsion reduces dust from dirt roads

Pit roads, crossings and driveways are by nature very dusty. In the general case, the amount of dust kicked up into the air depends on the surface of the road, its condition, weight and speed of vehicle movement. A large amount of dust in the air causes accelerated engine wear, limits visibility and causes serious lung conditions in affected people.

The problem is made worse by the wind. If wind speed...

December 19, 2014

Bitumen emulsion for road construction

Road top degrades during operation sue to two groups of factors: mechanical and climatic. Mechanical damage is caused by fatigue of the road top due to transportation load, made worse by uneven surface. This happens, for instance, when heavy trucks (30 tons and above) pass along the road in summer in temperatures in excess of 30ºС.

Climatic factors influence the asphalt due to poor quality of the binder (bitumen) and/or due...

GlobeCore Model VBU-6P

One of the essential pieces of equipment that is being used more and more in modern industrial and developing nations is the “Bitumen Emulsion” production plant.

The use of bitumen emulsion has several advantages over simple bitumen or tar products in most or all applications.  Most important is that bitumen emulsion does not require constant heating thereby increasing the efficiency of industrial operations and lowering operating costs.

Bitumen emulsion has a more...

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