Problem Exercise: A concrete road 15m wide, 5 km long, is designed with a thickness as shown in the following cross section. Specifying Class A concrete, determine the quantity of 40 kg cement, sand and gravel required. Use 40kg cement bags. 0.2 m 0.2 m 0.2 m 0.25 m 0.2 m

Q: ompressive strength 50 MPa at 28 days; Defec n class 42.5; Slump required = 30-60 mm; e size = 10…

A: 1 maximum aggregate size crushed =10mm    w/c for slimp =30-60 mm2  cement  content =water content…

Q: The pycnometer method has been adopted to measure the specific gravity of cement. The following…

A: Pycnometer: A pycnometer is a device used in the civil laboratory device used to measure the density…

Q: What type of concrete additives (two additives each) would you suggest for casting (a) the same…

A: a) To accelerate the rate of strength of concrete production or to decrease concrete curing…

Q: Calculate the maximum. uniform service live load (in kN/m) that can be applied to the beam before…

A: Area of section = b x h = 0.329 x 0.539 Let service load be ws.

Q: 635 kg of fine aggregate and 910 kg of coarse aggregate are needed to be mixed for producing 1m3 of…

A: Moisture Content : The amount of water is present in aggregates called as moisture content of…

Q: Calculate the slump of fresh concrete mix if you know: 1. W/C = 0.47 %3D 2. Sand = 648 Kg/m3. 3.…

A: d1= 0.1 m d2 = 0.2 m h= 0.3 m A1= π/4 x d12       = π/4 x 0.12   A1 = 7.854 x  10-3 m2   A2= π/4 x…

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.