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Q. Asphalt mix design - durability vs. stability?
The main aim of asphalt mix design is to achieve a mix with economical blending of aggregates with asphalt to achieve the following:
(i) Workability to facilitate easy placement of bituminous materials without experiencing segregation;
(ii) Sufficient stability so that under traffic loads the pavement won't undergo distortion and displacement
(iii) Durability by having sufficient asphalt
(iv) Sufficient air voids
In asphalt mix design, high durability is generally attained at the expense of low stability. Therefore a balance has to be stricken between durability and stability requirements.
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?
Illustrate by mean of single line drawing the difference between couple truss and couple close truss
in compression member [strut] why no deduction of area of rivet hole?
Quality Control of Concrete Roads: Concrete roads require a very high degree of quality control. The following aspects need to be checked regularly: (a) Strength, shape an
what is the type of slope protection that use rocks and put cements between those rocks??the concept is same as brick layer
Total Dynamic Head: (TDH) y-axis plot point related to each x-axis flow rate along the system curve plot. TDH = h a = TSH + h f + v 2 /2g v 2 / 2g usually small
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
Q. Diffrence between Concrete road and bituminous road? Concrete road belongs to rigid pavement and they don't deflect under traffic loads. Quite the reverse, bituminous pavem
construction of arches
Q. Air chamber vs. surge tank in pressurized pipelines? Air chambers and surge tanks are generally installed in water main to ease the stress on the system when valves or pumps
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