asphalt

bitumen
bitumen manafacturer
bitumen-emulsion

BNB Bitumen Emulsion

BNB Bitumen Emulsion is a free flowing liquid at ambient temperature. BNB Bitumen emulsion is a stable dispersion of fine globules of bitumen in continuous water phase. Dispersion is obtained by processing bitumen and water under controlled conditions through a colloidal mill together with selected additives. The use of proper quality emulsifier is essential to ensure that the emulsion has stability over time and also that it breaks and sets when applied on aggregates/road surface. It is chocolate brown free flowing liquid at room temperature.

ADVANTAGES OF BNB Bitumen EMULSIONS

  • BNB Bitumen Emulsion plant is designed to produce all known bitumen emulsion types as per IS 8887-2004 and ASTM specifications suitable for applications varying from the simplest tack coat to the latex modified bitumen emulsions.
  • BNB Bitumen Emulsions Plant has fully computerised PLC based automatic Process Control System and Emerson make mass flow meters for high accuracy which together will ensure highest production efficiency and stringent quality control.
  • BNB Bitumen Emulsion Plant has colloidal mill with capacity of 10 mts / hr.
  • BNB Bitumen has dedicated storage tanks for different grade of Bitumen Emulsions.
  • BNB Bitumen has automatic drum filling plant for finished products which can fill drums at the rate of 50 drums / hour of Bitumen Emulsions.

Product Range of BNB Bitumen Emulsions Specification

BNB Rapid Setting - 1 Cationic Bitumen Emulsion (RS-1)

Conforming to BIS 8887-2004

BNB RS-1 Cationic Bitumen Emulsion is cold applied and is very effective for Cold Mix Asphalt (CMA) concrete. BNB RS-1 grade bitumen emulsion is designed to react quickly with aggregate and revert from the emulsion state to bitumen. They are used primarily for tack coat application and in spray applications, such as aggregate (chip) seals, surface treatments, asphalt penetration macadam and grouting.

Tack Coat

Tack coat is a brownish-black emulsion of asphalt that is applied to the prepared, existing surface prior to placing new hot mix asphalt. The tack coat bonds to the original layer and the new hot mix asphalt, to make a monolithic pavement structure. This will also help in preventing water intrusion that can result in potholes on the road.

Aims of Tack Coat

  • The purpose of tack coat is to ensure bond between the existing pavement surface and a new pavement surface.
  • Tack coat should be applied in a thin coat and uniformly cover the entire surface, including all vertical surfaces of joints and structures. Too little tack coat can cause de-bonding and too much tack coat can cause slippage of hot mix asphalt
  • Tack coat seals pores in the surface and thereby makes the surface water - resistant
  • Prior to tack application the surface should be clean, dry and free from lose material


Advantages

  • Fast dry
  • Easy and uniform spray
  • Low temperature cure
  • Highly-adhesive properties
  • Less consumption in application
  • Enhance structural strength of layers
  • Deep penetration, due to the small partial size 5 – 6 microns
  • Prevents lateral movement of structural layers
  • Water resistant and enhances shedding of water
  • Provides an impervious layer to prevent water ingress from the possible water table below the road layers
  • Creates a bond between existing surface and a new course of asphalt
  • To coat and bond loose stone particles on the original surface to be paved.
  • Environmental friendly

BNB Rapid Setting - 2 Cationic Bitumen Emulsion (RS-2)

Conforming to BIS 8887-2004

BNB RS - 2 cationic rapid-setting-2 bitumen emulsion specifically designed and has a high residual binder content and a high viscosity to minimize the occurrence of run-off and is most suited for application such as

  • Surface Dressing
  • Grouting
  • Penetration Macadam

Surface Dressing

Surface Dressing is an established and proven highway maintenance technique. In simple terms it involves spraying of bitumen emulsion on the existing road surface followed immediately by hot mix asphalt. Specially built tankers are often used for this purpose. Surface dressing offers many advantages as under:

  • Seals the road surface against ingress of water which is known to be one of the major causes of asphalt pavement deterioration.
  • Arrests the deterioration of the road surface and underlying road pavement structure.
  • Restores the necessary level of skid resistance to the road surface with the resultant benefits of reduction in skid related traffic accidents.
  • Timely intervention will enable worn out road surfaces to last longer thereby increasing the time to when structural maintenance is required.

Grouting

For economical construction of low volume roads, a combined base and wearing courses can be made by application of BNB RS-2 Emulsion on the laid and compacted aggregates. This application can be carried out even when stone layer is damp

Penetration Macadam

Bituminous penetration macadam shall consist of the construction of one or more courses of compacted crushed aggregates bonded and keyed by alternate application of Bitumen emulsion RS-2 and filling aggregate and the application of seal coat when specified.

Advantages

  • Fast dry
  • Easy and uniform spray
  • Low temperature cure
  • Less consumption in application
  • Highly-adhesive properties
  • Environmental friendly
  • Enhance structural strength of layers
  • Prevents lateral movement of structural layers
  • Deep penetration, due to the small partial size 5 – 6 microns
  • Water resistant and enhances shedding of water
  • Provides an impervious layer to prevent water ingress from the possible water table below the road layers
  • Creates a bond between existing surface and a new course of asphalt
  • To coat and bond loose stone particles on the original surface to be paved.
  • No specified temperature to spray

BNB Medium Setting Cationic Bitumen Emulsion (MS)

Conforming to BIS 8887-2004

BNB Medium-setting (MS) bitumen emulsion is designed for mixing with coarse aggregates and is ideal in premix. Product is so formulated that is does not break immediately upon contact with aggregates and provides a few minute of workable time for fixing aggregates. The BNB MS grades have high viscosity to prevent runoff. This type of emulsion is highly recommended for surface dressing work

Uses of BNB MS Cationic Bitumen Emulsion

A medium setting emulsion used for plant or road mixes with coarse aggregates ( coarse aggregates is defined as material where minimum 80% retains on 2.36 mm IS Sieve and practically none of which passes 150 micron IS Sieve) and also for surface dressing and penetration macadam.

Chemical bond in the emulsion breaks at moderate rate. Time taken for setting is approximately 20-30 minutes. This is used in premix with less quantity of fine aggregates and for pot-hole repair work, prime coat, and slurry seal.

Application

  • Surface dressing is, by far, the largest use of BNB MS; the most important properties of BNB MS bitumen emulsion being stability, viscosity, breaking and adhesiveness.
  • It is stable under storage and transport conditions and will break on application leading to the bitumen content adhering strongly to the road / patches and/or chippings.
  • It has low viscosity for ease of handling and application.

Benefits of BNB Medium Setting:

  • Can be used in damp-environment on wet aggregates.
  • Any Road repair work can be carried out in minimum time.
  • Provides better tack and workable conditions.
  • Compatible with all types of common Indian aggregates.
  • Can be used in any season except in excessively cold environment or during rainfall.
  • Economical as compared to bitumen with no air-pollution (No heating required).
  • Long storage stability in clean airtight container/Tank.

BNB Slow Setting - 1 Cationic Bitumen Emulsion (SS-1)

Conforming to BIS 8887-2004

BNB Slow Setting grades of emulsion are designed for maximum stability. Slow setting grades takes long time to form bituminous film with best penetration on a porous medium aggregates and used for Prime coat.

Aim of Prime Coat:

The major purpose of prime coat is to protect the underlying layers from wet weather by providing a temporary waterproofing layer. Additional benefits of prime coat is stabilizing or binding the surface fines together and promoting bond to the hot mix bitumen layer.

Prime coat increases the bond strength at the interface between a compacted layer and asphalt layer.

Advantages of Prime Coat:

  • Penetrate rapidly into the absorbent surface and bind the granular material together.
  • Harden or toughen the surface
  • Money and time saving is achieved as no heating is required and also protects environment.
  • Partially waterproof the treated areas to make them resistant to water erosion
  • To plug capillary voids in the base course surface to prevent migration of moisture.
  • Provide adhesion between the base and the next course
  • Provide protection from water and traffic erosion

Benefits of BNB SS-1

  • Easy application
  • High adhesive properties
  • Water resistance features.
  • Penetrate in cracks while using low heating temperature
  • Ready to use without being heated
  • Decreased road maintenance cost
  • Long service life for roads
  • Compatible with Portland cement
  • Prevents raveling and rutting
  • Water resistant and enhances easy drainage of water
  • Prevents permeability of atmospheric air to the bottom layer
  • Extended breaking property of SS-1 emulsion provide adhesion between the base course and the succeeding course

BNB Slow Setting - 2 Cationic Bitumen Emulsion (SS-2)

Conforming to BIS 8887-2004

BNB Slow Setting - 2 Cationic Bitumen Emulsion (SS-2) is used for plant or road mixes like Slurry Seal, Fog Seal/ Crack Seal, Premix Seal Coat and for Prime coat applications. SS-2 having low quantity of solvent enables slow deposition of bituminous flim.

BNB Slow Setting grades of emulsion are designed for maximum stability. Slow setting consumes long time to form bituminous film with best penetration on a porous medium aggregates and used for Prime coat.

Slurry Seal

Slurry Seal is applied to preserve pavement and consisting of an asphalt emulsion, sand and rock which is applied to the road surface at an average thickness of ¼ inch. This cost effective maintenance treatment extends the life of road already in good condition. Recommended rate of application is 10 to 12 kg per 10sqm.

Prime Coat

The principal function of prime coat in bituminous pavement is to protect the sub grade from moisture and weathering. Since the presence of moisture affects the strength of sub grade, the prevention of water entry during construction is essential to avoid the failure of the pavement.

Prime coats protect the integrity of the granular base during construction and help reduce dust. In the case of a base which is to be covered with a thin hot mix layer or a chip seal for a low volume roadway, priming ensures a good bond between the seal and the underlying surface which otherwise would have a tendency to delaminate Recommended rate of application is 6 to 9 kg per 10sqm.

Crack Seal

Crack Sealing seals cracks preventing water getting into the pavement. Applied at the right time crack sealing will prevent or delay pothole formation. It should ideally be used with some sort of final overlay. Because cracks are a function of stress relaxation in the pavement. Recommended rate of application is 5 to 10 kg per 10sqm.

Premix Seal Coat:

Premix is mixture of fine aggregate, Portland cement filler, Bitumen Emulsion and additional water. They may be used to seal wide cracks, fill voids and minor depressions. Recommended rate of application is 10 to 12 kg per 10 sqm.

Fog Seal:

Fog seal helps to rejuvenate an old oxidized road surface, thus extending its life. Recommended rate of application is 5 to 10 kg per 10sqm.

BNB Cationic Slow Setting-1(CSS-1)

Conforming to ASTM D 2397

BNB CSS-1 Cationic Bitumen Emulsion (CSS-1) ASTM is specially designed water based Bitumen emulsion with low viscosity and extended setting time that makes it an ideal product for road maintenance applications and prime coating on high porous surfaces. It is chocolate brown in color and is a free flowing liquid at ambient temperature.

Uses of BNB CSS 1 ASTM Bitumen Emulsion

Coats and bonds loose mineral particles on the surface of the base course

  • Seals surface pores and makes the surface of the base course water-resistant
  • Penetrates the WMM surface so as to plug the capillary voids in it
  • Hardens and toughens the base course
  • Penetrates miniature pores of sub-base
  • Compatible with ordinary Portland cement

Recommended application rate:

 

Application

Quantity in Kg/10 m2 Area

1.

Fog Seal

5 to 10

2.

Slurry Seal

10 to 12

3.

Premix Seal Coat

12 to 15

4.

Prime Coat

6 to 9

 

BNB Cationic Slow Setting -1h(CSS-1h)

Conforming to ASTM D 2397

Bituminous emulsion is a liquid form of bitumen in which a substantial amount of bitumen is suspended in a finely dispersed condition in an aqueous medium; bitumen is the dispersed phase and water is the continuous phase. BNB CSS-1h bitumen emulsion is designed to exceed the functional requirements of respective applications.

Prime Coat:

Application of BNB CSS-1h to an absorptive surface, designed to penetrate, bond and stabilize the existing surface and to promote adhesion between it and any course constructed over it. Recommended rate of application is 6 to 9 Kg per 10 m.

Fog Seal / Crack Seal:

Light application of BNB CSS-1h to an existing pavement as a seal to inhibit raveling, or to seal the surface, or both. Also can be applied to fill and seal small cracks in existing pavements. Fog seal helps to rejuvenate an old oxidized road surface, thus extending its life. Recommended rate of application is 5 to 10 Kg per 10m

Slurry Seal:

It is a surface treatment for structurally sound roads where the wearing course has deteriorated. Slurry seals are mixtures of fine aggregate, Portland cement filler, bitumen emulsions and additional water. When freshly mixed, they have a thick consistency & can be sprayed to a thickness of 1.5-5 mm. They may be used to seal cracks, arrest fretting and fill voids and minor depressions. Recommended rate of application is 10 to 12.2 Kg per 10 m

Premix Seal Coat:

Premix is a mixture of fine aggregate, Portland cement filler, bitumen emulsions and additional water. They may be used to seal wide cracks, fill voids and minor depressions. Recommended rate of application is 10 to 12 Kg per 10m Cold Mixes: Mixture of BNB CSS-1h and mineral aggregate is applied at ambient temperature for patching holes, depressions and distress areas in existing pavements using appropriate method either manual or mechanical methods for placing and compacting the mix. These mixes can be used either immediately or at a later time without further processing.
Benefit of BNB CSS-1h

Excellent penetration into miniature pores of sub bases

  • Can be easily spray
  • Excellent penetration into the cracks & crevices and impart strength to the layers
  • Bonds well with cool, damp substrates/surfaces
  • Curing occurs at low temperature.
  • Highly adhesive
  • Prevents permeability of atmospheric air to the bottom layer
  • Bind loose aggregates together strongly

end faq

Specifications

BNB Bitumen Emulsion Specification

Sr. No.

Characteristic

Grade of Emulsion

   

RS-1

RS-2

MS

SS-1

SS-2

1

Residue on 600 micron IS Sieve, % mass Max.

0.05

0.05

0.05

0.05

0.05

2

Viscosity by Say bolt
Furol Viscometer

         
 

Second at 250C

-

-

-

20-100

30-150

 

at 500C

20-100

100-300

50-300

-

-

3

*1)Coagulation of emulsion at low temperatures.

NIL

NIL

NIL

NIL

NIL

4

Storage stability after 24 hrs % Max.

2

1

1

2

2

5

Particle charge

Positive

Positive

Positive

Weak
Positive

Positive

6

Coating ability and water resistance

         
 

a) Coating, dry aggregate

-

-

Good

-

-

 

b) Coating, after spraying

-

-

Fair

-

-

 

c) Coating, wet aggregate

-

-

Fair

-

-

 

d) Coating, after spraying

-

-

Fair

-

-

7

Stability to mixing with cement (% coagulation) Max.

-

-

-

2

2

8

Miscibility with water (Coagulation)

NIL

NIL

NIL

-

NIL

9

Test on Residue

         
 

a. Reside by Evaporation % Min.

60

67

65

50

60

 

b. Penetration 250C/100g/5 sec

80-150

80-150

60-150

60-350

60-120

 

c. Ductility 270C/cm Min.

50

50

50

50

50

 

d. Solubility in trichloroethylene % Min.

98

98

98

98

98

10

Distillation percent, by volume at:

         
 

a. 1900 C

-

-

-

20-55

-

 

b. 2250 C

-

-

-

30-75

-

 

c. 2600 C

-

-

-

40-90

-

 

d. 3150C

-

-

-

60-100

-

11

Water content, percent by mass, Max

-

-

-

20

-

Specification Bitumen Emulsion As Per ASTM 2397

SPECIFICATION Bitumen Emulsion As Per ASTM 2397
SR. no PROPERTIES CSS-1 CSS-1h
 
1 Viscosity Saybolt Furol at 25 deg C 20-100 20-100
2 Viscosity Saybolt Furol at 50 deg C, seconds    
3 Coagulation at low temperature (applicable for ambient temp below 15 deg C)    
4 Storage Stability test, 24h, % 1 1
5 Demulsibility, 35 ml, 0.8% dioctyl sodium sulfosuccinate, %    
6 Coating ability and water resistance    
7 Coating, dry aggregate    
8 Coating,after spraying    
9 Coating, wet aggregate    
10 Coating, after spraying    
       
11 Particle Charge Positive Positive
12 Miscibility with water    
13 Sieve Test %,max 0.1 0.1
14 Cement Mixing Test %, Max 2 2
15 Distillation    
16 Oil distillate, by volume of emulsion %,max    
17 Residue %,min 57 57
       
18 Tests on residue    
19 Residue on evaporation, min    
20 Penetration 25 deg C, 100g , 5 s 100-250 40-90
21 Ductility 25 deg C,5 cm/min, cm 40 min 40 min
22 Solubility in trichloroethylene %, min 97.5 97.5
       
23 Distillation by percent, by volume at    
  1) 190 deg C    
  2) 225 deg C    
  3) 260 deg C    
  4) 315 deg C    
       
  Water Content, % by mass, max    

end faq