There is a desire to create a material that requires lower working temperatures but still has the required viscosity on a hot summer day. Therefore, there are many manufacturers and suppliers who ambitiously try to produce the finest bitumen emulsion at the best price. This is because bitumen requires high temperatures to reduce its viscosity enough to create asphalt paving.
This requires a lot of fuel and the hot sticky liquid can be a safety hazard, so Mixing bitumen with a solvent will leave pure bitumen after application. Bitumen is what’s left after gasoline and diesel fuel are distilled from crude oil.
Bitumen may be cracked into lighter fractions, but it’s used for paving, roofing, waterproofing, etc., thus it’s not profitable to do so unless the market price of lighter fractions is very high. Bitumen is called “tar” in the vernacular and Asphalt Cement in the paving business. Bitumen and water combine to form bitumen emulsions, which are often biphasic systems.
The bitumen phase in the water phase of a colloid mill can be dispersed by mechanical shearing. A chemical emulsifier keeps bitumen globules from quickly merging by providing an electrical charge, keeping the particles suspended in water.
In order to prevent the bitumen particles from aggregating and falling out of suspension, similar charges on each scattered bitumen particle oppose one another. Emulsions can be employed in almost every application that calls for cutback bitumen, polymer-modified binders, or traditional bitumen, as well as a variety of other situations where cutbacks are not suitable.
Bituminous coatings are an efficient method of waterproofing and protecting a variety of substrates, particularly metal, against the corrosive effects of moisture. However, the usefulness and performance of these products are entirely dependent on whether the surface is properly prepared.
During the Indus Valley Civilization, the city of Mehrgarh was the location where natural bitumen-coated harvest storage baskets dating back to between 5000 and 4000 B.C. were discovered. They were put to use as a form of waterproofing for the structure. Additional research indicates that bitumen was employed roughly one thousand years later at the same location to waterproof the Great Bath that was found at Mohenjo-Daro.
Bitumen was put to use for a variety of building tasks by the ancient Sumerians of the Middle East. Some of these tasks included bricklaying, caulking, and waterproofing of ships.
The process of waterproofing involves putting a substance to a surface or structure in such a way that it repels water intrusion or is unaffected by prolonged contact with moisture when subjected to a certain set of conditions. It is common practice to apply waterproofing to buildings and other structures that, under normal circumstances, would not be able to function in surroundings that are wet or damp.
On the other hand, waterproofing and moisture proofing are not interchangeable terms in any way. The first method includes the prevention of liquid water from permeating a substance, whereas the second method involves the enhancement of a material’s resistance to humidity or dampness.
Bitumen, depending on its specific composition and the manner in which it is applied, can be utilized to either waterproof or damp-proof a variety of items and buildings. The requirement of utilizing bitumen to waterproof and safeguard a number of building types have been brought to light as a result of the growing demands and harsh industrial settings that are present in modern civilization.
what is bitumen emulsion used for
When it comes to spreading bitumen on mineral aggregate bases in construction, the method that is used most frequently is called bitumen emulsion. Bitumen emulsions are a bitumen mixture in an aquatic continuous phase. They are made more stable by the addition of an emulsifier.
Emulsions of bitumen are usually used as solid dispersions when the temperatures are low, but they are transformed into real emulsions when the temperatures are high. Emulsions have to be broken across the surface of the various mineral aggregates in a regulated manner when they are being used in the construction of roads. Top bitumen emulsifier market manufacturers produce the following grades of emulsions based on road conditions, climate, and client demand.
Micro Surfacing
Micro-surfacing uses bitumen emulsion to protect and maintain the underlying pavement structure, creating a new driving surface. Asphalt often contains polymer to improve mixing qualities. Micro-surfacing uses asphalt emulsion with chemical additives that allow it to crumble without heat or sun.
Slurry Seal
Slurry Seal is utilized worldwide on highways and residential streets. This grade of bitumen emulsion is typically used on airport runways and for skid resistance. Slurry seal uses Slow Setting Emulsion.
Cold Mix
Cold mix is a mineral aggregate mixture used for basic surface construction. Primarily, it is utilized for road repairs, restoring evacuated areas, repairing damaged road surfaces, etc.
Tack Coat
Tack Coat is a bitumen emulsion spray used to bind a new and old bituminous surface. This grade requires a thin, uniform layer of bitumen emulsion. Tack Coat uses Rapid Setting Emulsion.
Prime Coat
It’s used to prepare bituminous road bases. Prime Coat might be Slow or Medium Setting Emulsion, depending on the road foundation.
Fog /Crack Seal
It’s utilized to rejuvenate oxidized, dry, cracked, or void bituminous surfaces. Emulsion flows quickly into cracks and surface spaces to prolong bitumen’s life. Fog Seal uses Medium and Slow Emulsion.
Soil Stabilization
It’s utilized to strengthen the road base or enhance marginal aggregates. A moving plant combines aggregates with bitumen emulsion. It deposits an evenly coated slurry that is compressed. Medium and Slow Emulsion is used.
Surface Dressing
Simple and cheap road surface treatment. Surface-dressed roads survive long with adequate drainage, maintenance, and resurfacing. Bitumen Emulsion is sprayed over the road, followed by aggregate and rolling. Slow traffic can use the route in around 30 minutes. Surface Dressing uses Rapid Setting Emulsion.
Penetration Macadam
Bitumen Emulsion is sprayed over crushed rock. Penetration Macadam’s wearing course is bituminous premix or surface patterns. Penetration Macadam uses Rapid-Setting Emulsion.
Potholes Repair
It’s a blend of graded aggregates and modified emulsion that fills potholes immediately, except during heavy rain.
bitumen emulsion paint
Bituminous paints are coating materials that are based on bitumen and may be applied in a liquid or semi-liquid form, as the name indicates. The majority of the components that make up these paints are hydrocarbons that have been dissolved in another type of solvents, such as mineral spirits or naphtha. These solvents include: In order to improve the durability and flexibility of bituminous paints and coatings, it is common practice to add polymers based on polyurethane or acrylic. This is especially important when the coatings are going to be exposed to sunlight.
Bitumen is almost completely insoluble in water; hence, coatings that are based on bitumen are highly efficient water repellents and sealants. Because of the material’s natural resistance to water and its excellent adhesion, it is able to prevent air and moisture from coming into touch with the substrates that it covers, which results in exceptional protection against corrosion.
In addition, structures that function in hostile environments are great candidates for being coated with bituminous paints since these paints are often long-lasting, inexpensive, and resistant to the damaging effects of chemicals and ultraviolet (UV) light.
In a nutshell, bituminous paints may be used to waterproof a wide variety of structures, both those that are above and those that are below ground. They are frequently used in the construction industry to line reinforced concrete foundations and retaining walls to avoid moisture ingress, which can cause steel reinforcement to rust. This is done so that the foundations and walls will not be damaged.
types of bitumen emulsion
The combination of water and very small particles of bitumen is what makes up bitumen emulsion. Different types of this emulsion typically have between 40 and 70 percent of their entire weight comprised of bitumen that has been blended in. According to the length of time, it takes for the bitumen to harden, cutback bitumen may be separated into the following categories: Rapid Curing (RC), Medium Curing (MC), and Slow Curing (SC).
The grades RC-70, RC-250, RC-800, and RC-3000 belong to the subcategory of rapid curing grades. These grades are sometimes referred to as medium curing grades. The amount of bitumen found in each of these grades range from 55 percent to 65 percent, 75 percent, and 80 percent respectively.
Medium Curing Grades The grades that fall under the umbrella of medium curing grades are MC-30, MC-70, MC-250, MC-800, and MC-3000. Subcategories of Medium Curing Grades These grades feature a bitumen content that ranges from 58 percent to 64 percent, 74 percent to 80 percent, and 85 percent respectively.
Slow Curing Grades SC-70, SC-250, SC-800, and SC-3000 are the grades that fall under the umbrella of slow curing grades and are classified as subcategories. The amount of bitumen found in each of these grades range from 50 percent to 60 percent, 70 percent, and 80 percent respectively.
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