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

Bleeding test for grout – an essential requirement, Q. Bleeding test for gr...

Q. Bleeding test for grout – an essential requirement? Bleeding is a form of segregation in that a layer of water migrates to surface of the grout at the time of the initial st

Closing and opening of expansion joints and contraction join, Question ...

Question In case of for unreinforced concrete carriageway, what will succession of closing and opening of expansion joints and contraction joints? Answer Take a case t

Explain the term - moderate prestressing, Explain the term - Moderate Prest...

Explain the term - Moderate Prestressing In this form of prestressing, no limit is imposed on  the magnitude of tensile stresses which may be produced in a concrete member unde

Write short notes on numerical rating of bridges, Q. Write short notes on N...

Q. Write short notes on Numerical rating of Bridges? In the numerical rating system, the condition of a bridge is represented by a number consisting eight digits. This eight di

Timber grading, IS 883-1970 classifies the structural timber into 3 grades-...

IS 883-1970 classifies the structural timber into 3 grades-select grade, grade I and grade II

Good surface regularity for sub-base in concrete pavement, Q. Good surface ...

Q. Good surface regularity for sub-base in concrete pavement? Surfaces of sub-base material for concrete carriageway must be built in a regular manner due to the following reas

Bmc, what is a masonry

what is a masonry

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