Types of Road Pavements Types of road pavement: The road pavements are mainly classified into two types: Flexible Pavement Rigid Pavement Another two types of road pavement are becoming popular at present times, they are: Semi-rigid Pavement Interlocking Cement concrete Block Pavement Flexible pavements Flexible pavement, as the name suggests they are flexible in nature…
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How To Calculate Equivalent Single Wheel Load(ESWL) Mathematical Problem: Example The loaded weight on the rear dual wheels of a track is 5500 Kg. The centre to centre spacing and clear space in dual wheels are 30 cm and 10 cm respectively. Calculate the equivalent single wheel load or ESWL for pavement thickness 20 cm,…
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Component Parts Of Flexible & Rigid Road Pavements Structure The following are the 4 component parts of road pavement: Subgrade or formation. Subbase course. Base course. Surface course or wearing course. 1) Subgrade or Formation The finished and compacted surface of earthwork on which a road pavement rests is called subgrade or formation. Functions of…
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Necessity of Providing Joints in Cement Concrete Road Joints are provided in cement concrete road (pavement) to achieve the following objectives (Read more- what is joint in cement concrete road) 1. To allow for expansion of the slab due to the rise in slab temperature. 2. To permit the contraction of the slab due to…
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Types Of Joints In Cement Concrete Road The joints provided in cement concrete road are classified into the following two categories: 1. Longitudinal Joints.2. Transverse Joints. 1. Longitudinal Joints These joints are provided longitudinally in cement concrete roads which have a width more than 4.5 m. Such joints are provided to prevent longitudinal cracking in…
Joints in Cement Concrete Roads Joints are provided in cement concrete road to allow expansion, contraction and warping of the slabs due to the variation in the temperature of slabs. Increase in temperature cause expansion of the slab horizontally. Similarly, decrease of temperature cause contraction of the slab horizontally. The slab movements also take place,…
Failure of Flexible Pavement Flexible pavement failure is defined by the formation of potholes, ruts, cracks, localized depressions and settlement. The failure of any one or more components of the pavement structure such as subgrade, base course, wearing course is liable for pavement failure. Following are some of the typical flexible pavement failures: 1. Alligator…
