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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.
Define Sounding or Sensing Devices? Sounding devices are effective in checking scour in the streambed adjacent to a bridge. Although sounding/sensing devices can be used indepe
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What is the economic span of a bridge
What practical steps can one take to mitigate the adverse effects in using aggregates with higher than specified flakiness index in the production of concrete
A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be?
Define Overloading - Deterioration in Steel? Steel structural elements are sensitive to impact damage from moving vessels and other types of accidental overloading. Impact or c
Q. Corrosion protection of lifting anchors in precast concrete? Corrosion of lifting anchors in precast concrete units has to be prevented since the corroded lifting units caus
In reclamation involving large volumes of fill and tight programme, shall engineers use marine fill or mud extracted from land borrow area as filling material? There are two
Water Transportation: Water transport, in its various forms, is one of the most efficient forms of transport, because of low fuel consumption, low environmental pollution and
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