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Testing of Aggregates:
For use in pavement, road aggregates have to be strong, durable and of good shape. A well-graded aggregates adds to the stability of the layer. The following tests are commonly conducted on aggregates to determine their suitability for road construction :
(a) Particle size distribution (gradation)
(b) Presence of deleterious material
(c) Specified gravity and water absorption
(d) Strength
(e) Shape
(f) Stripping
(g) Soundness test
define rigidity modulus and mention its units?
Q. Function of waterproof (or separation) membrane for concrete carriageway A layer of waterproof (or separation) membrane is usually placed between sub-base and concrete slab
State an expression for 'zero air-void line' and illustrate the line for a specific gravity of 2.65. What are the various factors that affect the compaction of soil in the field
random rubble coursed, suare rubble coursed and uncoursed, polygonal walling, flint walling
Impact Test: Resistance of stones to impact is found by conducting tests in impacting testing machine .It contain of a frame with guides in which a metal hammer weighing 13.
effective length of the column
Q. What is Portal Cranes? The Portal crane is a hydraulically driven four wheeled machine and is meant for carrying sleepers or track panels. The power for running and working
Example : Determine the declination at a place, if at noon the magnetic bearing to the sun is (a) 358° (b) 185° Solution: (a) Referring to given figure (a) since the ma
They stop, or slow down erosion, and stop long shore drift. This, though, can have bad knock-on effects somewhere near.
A -3.00% grade intersects a +1.25% grade at Sta. 85+80 and elevation 210.00 ft. A 350-ft vertical curve connects the two grades. Determine the station and elevation of turning po
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