Difference between anionic emulsions and cationic emulsions, Civil Engineering

Assignment Help:

Q. Bitumen emulsions - difference between anionic emulsions and cationic emulsions?

Bitumen emulsions comprises particles of bitumen dispersed in water by using emulsifying agent. When emulsion breaks, it signifies a change from a liquid to a coherent film with bitumen particles coagulating together. The sign of breaking is the change of colour from brown to black as the colour of emulsion and bitumen is black and brown respectively. 

There are in common two broad types of emulsions, viz.cationic emulsions and anionic emulsions. The breaking of anionic emulsions is dependent on the evaporation of water from bitumen emulsion. It poses difficulty in wet weather condition. Though for cationic emulsions, in place of relying on the evaporation of water the breaking is achieved by chemical coagulation. Therefore cationic emulsions are chiefly useful in wet weather conditions.


Related Discussions:- Difference between anionic emulsions and cationic emulsions

Engineering Mechanics, the jet transport B is flying north with a velocity ...

the jet transport B is flying north with a velocity vB = 600 km/h when a smaller aircraft A passes underneath the transport headed in the 60 degree direction shown. To passengers i

Dock wall and dry dock, Dock Wall and Dry Dock: Dock Wall Fig...

Dock Wall and Dry Dock: Dock Wall Figure gives the diagram of a dock wall. Figure: Mass Concrete Dock Wall Dry Dock Figure 9 gives the details

Design nominal reinforcement for staircase, Question Given a 1meter hig...

Question Given a 1meter high staircase resting on solid concrete, could it be adequate to design nominal reinforcement for staircase? Answer For design of staircase,

Define sounding or sensing devices, Define Sounding or Sensing Devices? ...

Define Sounding or Sensing Devices? Sounding devices are effective in checking scour in the streambed adjacent to a bridge. Although sounding/sensing devices can be used indepe

Optimum moisture content to grab maximum density, Question For compacti...

Question For compaction of free-draining sands or gravels, what is optimum moisture content to grab maximum density ? Answer Compaction curve of dirty materials is com

Determine the required area of steel, A rectangular concrete beam is subjec...

A rectangular concrete beam is subjected to a factored moment (Mu) of 345 kip*ft.  The beam has the following properties: f'c = 5500 psi fy = 60,000 psi h = 39 in

What is main purpose of swabbing, Question After construction of waterm...

Question After construction of watermain, earlier to hydrostatic pressure test , swabbing is approved out. What is main purpose of swabbing ? Answer Pipelines ha

Explain the limitations of rebound hammer, Explain the Limitations of Rebou...

Explain the Limitations of Rebound Hammer? The following characteristics of concrete can affect the correlation of the rebound number with the actual surface hardness and shoul

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd