Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Fig: Position of application of tack coat
Q. Show the Settlement due to Excavation? If an excavation is made in a sandy soil, the structure founded near the excavation will be affected and it will cause extra settlem
Determine the normal and shear stress elements: The state of stress at a point is given through the stress components σ x = 70 MPa, σ y = 10 MPa, and τ xy = - 40 MPa. Using
Determine about the prestressed concrete In prestressed concrete the most important parameter is the prestressing force. Ifthe prestressing force reduces with time, prestresses
list and explain the types of concrete mixer
Exponential distribution - Poisson distribution function: Let X follow exponential distribution with parameter θ. Find the pdf of Y = X 1/β where β( ≥ 1 ) is a constant.
Use of Admixtures in Concrete The use of chemical admixtures may be made in prestressed concrete construction. But the admixture should not contain chlorides in any form. This
applications of distomat in briefly
Good evening sir, solid block''s design mix calculated generally please explain and derive .
rolling steel door
State the term - Relaxation of Stress in Steel If we keep a high-tensile steel wire stretched and maintained at a constant strain, the value of the force in the wire does not
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd