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

Sketch typical complete grain-size distribution curves, Sketch typical comp...

Sketch typical complete grain-size distribution curves for (i) well graded soil and (ii) uniform silty sand. Form the curves, evaluate the uniformity coefficient and effective size

Terminology of earthquake, TERMINOLOGY 1. Focus: The point on the fau...

TERMINOLOGY 1. Focus: The point on the fault where slip begins is the focus. It is also called as hypocentre 2. Epicentre: The point vertically above the focus on the su

Surveying, How to read verniers and main scale readings on theodolite of 10...

How to read verniers and main scale readings on theodolite of 10"?

Illustrate the term - failure due to rupture of steel, Failure Due to Ruptu...

Failure Due to Rupture of Steel This mode of  failure is likely in lightly reinforced concrete members in which the ultimate strength of  steel is attained before the concrete

How double drainage occur, The loading period for a building extended from ...

The loading period for a building extended from Feb., 1957 to Feb., 1959. In Feb., 1962, the average measured settlement was found to be 117 mm. The ultimate settlement was expecte

Levelling, important terms used in levelling

important terms used in levelling

Equipments required for under water inspection of bridge, Define Equipments...

Define Equipments and tools required for under water Inspection of Bridge? Since the underwater inspection of stone masonry substructures involve only a cursory inspection of t

Determine the settlement of the foundation, A soft, normally consolidated c...

A soft, normally consolidated clay layer is 18 m thick. The natural water content is 45%. The saturated unit weight is 18 kN/m 3 ; the grain specific gravity is 2.70 and the liqui

Surveying, obstacles in chain surveying

obstacles in chain surveying

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