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

Rcc, what is the density of rcc

what is the density of rcc

Modern trends in transportation, Modern Trends in Transportation: Rapi...

Modern Trends in Transportation: Rapid urbanization that is taking place in India is putting severe strain on the road system. Modern systems like exclusive bus lanes, light r

Wet mix macadam - road pavements, Wet Mix Macadam: For heavily traffi...

Wet Mix Macadam: For heavily trafficked highways, the granular bases are constructed using Wet Mix Macadam (WMM). The WMM is a specification in which well graded aggregate is

Brigdes, infomation about differnt brigdes

infomation about differnt brigdes

Design a 10 unit rapid sand filter system, Design a 10 unit rapid sand filt...

Design a 10 unit rapid sand filter system for a flow of 6.3 MGD with a filtration rate of 2 gpm/sq ft. and an L: W ratio of 1.3.   Design flow (Q) = 6.3 MGD = 6.3x106 gpd =

How is skin friction and point resistance of a pile computed, Describe the ...

Describe the basic difference in the bearing capacity computation of shallow and deep foundations. How are skin frictions and point resistance of a pile computed?

Aggragates, what are the classification og aggregates?

what are the classification og aggregates?

Changeable depth bridge decks, Question What is the sucker deck principle f...

Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greater tha

Determine the ground elevation, The trigonometric levelling from the survey...

The trigonometric levelling from the surveyor's notes is shown below. The ground elevation of T (ft) is most nearly: Solution:  The elevation of point P can be found from: E

Types of limes and their properties, Types of Limes and their Properties ...

Types of Limes and their Properties The limes are classified in three categories as fat lime, hydraulic lime and poor lime: (1) Fat lime: It is composed of 95 percentage o

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