Tack coat – emulsified asphalts vs cutback asphalts, Civil Engineering

Assignment Help:

Tack coat - emulsified asphalts vs. cutback asphalts

Emulsified asphalt is a suspension of asphalt in water by employing an emulsifying agent that imposes an electric charge on asphalt particles so that they would join and cement together. Cutback asphalt is simply asphalt dissolved in petroleum. Purpose of adding emulsifying agent in water or petroleum is to decrease viscosity of asphalt in low temperatures. 

Colour of emulsion for tack coat is brown initially at the time of application. Afterwards the colour is changed to black when asphalt starts to stick to the surrounding and it's described as 'break'. For emulsified asphalts, when water has all evaporated, emulsion is said to have 'set'. Cutback emulsion is described to have been 'cured' when solvent has evaporated. There are numerous problems associated with cutback asphalts:

(i)  Emulsified asphalt can be diluted with water so that a low application rate could be achieved.

(ii) Evaporation of petroleum into atmosphere for cutback asphalt poses environmental problem.

(iii)Cost of production of petroleum is higher than emulsifying agent and water.  

1841_Tack coat – emulsified asphalts vs cutback asphalts.png

Fig: Position of application of tack coat


Related Discussions:- Tack coat – emulsified asphalts vs cutback asphalts

Surveying, A pre- engineering base line was run down a very steep hill.rath...

A pre- engineering base line was run down a very steep hill.rather than measure horizontaily down hill with steel tape: surveyor measured the vertical angle with the theodolite and

Timber, seasoning of timber

seasoning of timber

REport, CASTE DISCRIMANIMATION

CASTE DISCRIMANIMATION

Lintel, Ask question #classfication of lintel Minimum 100 words accepted#

Ask question #classfication of lintel Minimum 100 words accepted#

Shear Iosipescu Test, First Can I use this device to test concrete specimen...

First Can I use this device to test concrete specimen? I think the specimens sustain tensile strength with fixing the jaws! I want to know it is true or not?

Castellated beams – reasons for its widespread usage, Q. Explain about Cast...

Q. Explain about Castellated beams? Castellated beams refer to the type of beams which involve expanding a standard rolled steel section in such a way that a predetermined patt

Diaphragms necessary in concrete box girder bridges, Are diaphragms necessa...

Are diaphragms necessary in designing of concrete box girder bridges ?

Determine the steps for routine inspection, Determine the Steps for routine...

Determine the Steps for routine inspection? A routine inspection should normally include: - A Level I inspection on 100% of the underwater portion of the structure to determ

Streams not wholly alluvial - alluvial streams, Streams Not Wholly Alluvial...

Streams Not Wholly Alluvial In streams which are not wholly alluvial, consisting of bed of pebbles, rock, etc. the liner waterway is kept equal to the actual surface width of

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