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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.
For IRC Class AA loading in existing industrial areas, what is load (kN/m) has to applied base don the wheel loads. especially raft foundation & roads are at same level.
Question If contractor suggests increasing concrete cover beyond contractual such as 40mm to 70mm shall engineers accept suggestion? Answer In contractual part, based on requir
pert disadvantages of software support, datacollection , interpretation of results issues
how it different from hot mix asphalt . is it changes any performance compared to hot mix asphalt
what is arches ? what are the classification of arches
Classification of Timber Several bases are considered for the classification of timbers. The following are the essential basis: Mode of growth Modulus of elasticity
Quality Control in Flexible Pavements: The quality control needed for Flexible Pavements covers the following tests : (a) Density and Moisture content of sub-grade. (b)
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Effect of rusting on steel reinforcement Corrosion of steel reinforcement inside a concrete structure is undesirable in the subsequent ways: (i) Presence of rust impairs
Determine the Size and Number of Aeration Basins? For a community of 100,000, determine the size and number of aeration basins in a municipal activated sludge treatment facilit
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