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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) Strength, shape, stripping tests for aggregates.
(c) Strict control over temperature of bitumen, mix.
(d) Amount of binder sprayed in prime coat, tack coat and surface dressing.
(e) Quantity of aggregates spread in surface dressing.
(f) Density and thickness of bituminous macadam, dense bituminous macadam, bituminous concrete and semi dense bituminous carpet.
(g) Marshall Stability values of BC, DBM and SDBC. (h) Profile and longitudinal levels.
Classification Based on Modulus of Elasticity: Young's modulus is resolute by conducting bending test. On this basis timber is classified as following: Group A: E = 12.5 kN
solution of point of contraflexure
Define the term - post-tensioned concret In the Prescon and B.B.R.V. systems button heads are created at the ends of tendons. In the case of Prescon system, 2 to 130 tendon wir
Vertical Curves: When two vertical gradients meet, it is necessary to provide a vertical curve. Two types of vertical curves are used: (a) Summit curve, where the point of
how to estimate stone in road soling
Define about the Inclined Borings Inclined brings may also be used in exploration of inclined strata and for the detection of weak pockets (lenses), buried channels, caviti
thickness of brick masonry
what are its basics?
Inspite of the problems of sample disturbance, if 1) e or E vs log p curve is interpreted, reasonably with some corrections for sample disturbance, 2) if the sample disturbance
Tensile stresses It has been possible to introduce tensile stresses of upto 850 N/mm 2 in tendons with the use of this method. But the method is not suited in situations where
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