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

Steel overlap in columns, where we can overlap steel in columns if we use ...

where we can overlap steel in columns if we use 50 or 60 bar diameter as overlap length.

Describe the boussinesq theory, A raft of size 4 m-square carries a load of...

A raft of size 4 m-square carries a load of 200 kN/m 2 . Verify the vertical stress increment at a point 4 m below the centre of the loaded area using Boussinesq's theory. Compare

Discuss about the post-tensioning systems, Discuss about the post-tensionin...

Discuss about the post-tensioning systems In most of post-tensioning systems, when the cable is tensioned and the jack is released to transfer prestress to concrete, the fricti

Explain transpiration and infiltration, Explain Transpiration and Infiltrat...

Explain Transpiration and Infiltration Transpiration: The part of evaporation in which water vapor enters the atmosphere through the plants. The "transpired" water originated

Non uniform flow in open channe, A rectangular channel is 3 m in width and ...

A rectangular channel is 3 m in width and draws water from a lake. The channel slope is 0.001 and the Manning’s n is 0.0013. What will be the discharge in the channel when the lake

Assignment, I need to find support reactions at O for the beam with a distr...

I need to find support reactions at O for the beam with a distributed load, a 6 kN moment couple at A and a 3 kN axial load as shown in picture.

Describe general shear failure, Describe 'general shear failure' and 'Local...

Describe 'general shear failure' and 'Local shear failure'. Differentiate among (i)   Shallow foundation and deep foundation, (ii)  Gross and net bearing capacity, (iii) S

Strength of materials, Enlongations in solids based on elastic constants

Enlongations in solids based on elastic constants

State the procedure of prestressing, State the procedure of prestressing ...

State the procedure of prestressing When these wires cool down, concrete is poured in the moulds in which these tendons are provided in a stretched condition. Using this proces

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