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

Determine the magnitude of application of the active thrust, A retaining wa...

A retaining wall 9 m high retains cohesion less soil, with an angle of internal friction 33°. The surface is level with the top of the wall. The unit weight of the top 3 m of the f

Define the meanings of texture, a) Define the meanings of 'texture' and 'st...

a) Define the meanings of 'texture' and 'structure' of a soil. b) Write the meaning of 'black cotton soil'? Indicate the geological and climatic conditions that tend to make

Key reasons for conducting pull-out tests, Question What are key reason...

Question What are key reasons for conducting pull-out tests for soil nails ? Answer There are largely four bases for this examination- (i) To verify and verify bo

Explain the driver expectancy, Explain the Driver Expectancy A fundamen...

Explain the Driver Expectancy A fundamental component of driver information processing and perception. Drivers operate with a set of expectancies, e.g.: 1) Freeway exits wil

Project management, Project Management: This unit starts with the gene...

Project Management: This unit starts with the general definition of Project management. Several phases involved in project management are also desribed. Further, the technique

Surveying, what do you understand by the term local attraction

what do you understand by the term local attraction

Necessity of air valves in pressurized pipelines, Q. Necessity of air valve...

Q. Necessity of air valves in pressurized pipelines? Air valves are broadly categorized into two major types: single air valves and double air valves. Single air valve comprise

Measure the ultimate settlement due to pumping, A clay stratum of 18 metres...

A clay stratum of 18 metres thickness was found above a sand stratum when a boring was made. The clay was consolidated under the present overburden pressure. The hydrostatic pressu

Stone tiles for construction material, Q. Stone tiles for construction mate...

Q. Stone tiles for construction material? For Public toilet bath rooms kitchen etc. we may be use stones tiles ( marble , kota stone , Polished Kuddapa stone or polished Dhura

Arches, what is arches ? what are the classification of arches

what is arches ? what are the classification of arches

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