Corrugation and shoving are two defects that usually occur in flexible pavements. Weak sub-grade conditions, improper rolling, poor mixing, temperature effect of bitumen, and weak bottom layers are different causes of corrugation and shoving in flexible pavements. What is Corrugation? ...
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Difficulties in Soil Stabilization for Road Construction
Soil stabilization is the method of improving soil properties by adding suitable stabilizers to it. It is very important to achieve the required strength for the soil, especially in road construction projects where an unstable base can lead to the ...
Grade Separation and Interchanges
Grade separation is a method developed to avoid the disruption of traffic flow at intersections. Grade separation is adopted at junctions where two or more surface transport axes cross with each other. Different types of grade separation structures, advantages and ...
Lime Soil Stabilization Method and Factors Affecting it
Lime-Soil stabilization is the process of adding lime to the soil to improve its properties like density, bearing capacity etc. Various factors affecting lime-soil stabilization are soil type, lime type, lime content used, compaction, curing period and additives which are ...
Flexible Pavement Composition and Structure
The composition and structure of flexible pavement consists of surface course, binder course, base course, subbase course, frost protection course, subgrade. Flexible pavements contain bitumen or asphalt layer as wearing course and supports loads through bearing. They have low flexural strength. ...
Retaining Wall Types, Materials, Economy, and Applications
What is a retaining wall? Retaining wall is a structure that are designed and constructed to withstand lateral pressure of soil or hold back soil materials. The lateral pressure could be also due to earth filling, liquid pressure, sand, and ...
Curves in Alignment of Highways – Types of Curves
What is a Curve in Roads? A curve is nothing but an arc which connects two straight lines which are separated by some angle called deflection angle. This situation occurs where the alignment of a road way or rail way ...
Laser Crack Measurement System for Pavements – Application and Advantages
Laser crack measurement system is highly developed technological methods of inspecting pavements which has been used extensively around the world. Advantages and applications of laser crack measurement system for pavements are discussed.