Strategic Highway Construction in Hilly Terrain
Gravitational forces are always acting on a mass of soil or rock beneath a slope. As long as the strength of the mass is equal to or greater than the gravitational forces, the forces are in balance
Hot Mix Recycling of Asphalt Pavements materials – India
Recycling of existing asphalt pavement materials to produce new pavement materials results in considerable savings of material, money, and energy. The specific benefits of recycling can be
R&D in Road Transportation Sector CSIR-CRRI Contributions
A good road transport system is one of the best indicators of the economic and industrial development of a country and its growth. The road network in India has grown from 400,000 km in 1951 to about 3.5
Whitetopping- An Engineered Economical Long-lasting Solution for Distressed Roads
Whitetopping is an engineered method of placement of concrete overlay on existing distressed bituminous as well as concrete roads. In India, whitetopping technology is being adopted
Use of Geosynthetic Material For Reinforced Earthwall Construction
Reinforced earth retaining wall is comparatively a new construction technique. Due to its simplicity, economy and faster pace of construction, several such retaining walls have been constructed all over the world
Pervious Concrete A Solution to Stormwater Runoff
Pervious concrete is a mixture of hydraulic cement, coarse aggregates (stone), water and admixtures. American Concrete Institute (ACI) Committee 522 describes pervious concrete as a "near zero-slump
Transportation Infrastructure Needs and Developments
Mobility is fundamental to economic and social activities of any country. Mobility is provided by the transportation infrastructure and this has a huge impact on the development and welfare
Causes and Prevention of Structural Failures
Part of a building in Vijayawada collapsed one early morning killing a person. On inspection, it was found that the collapsed part was constructed adjacent to the main building with 25mm expansion
Successful Construction of a Toll Motorway
A 39 kilometer toll motorway was constructed on budget (A$2.5 billion) and five months ahead of time. It was opened in June 2008. This project involved 17 interchanges, 88 bridges and twin three lane
Asphalt is Green
Raising environmental concerns, fuel costs and the steadily declining natural resources affect not only the cost of asphalt mixes per se, but is forcing the industry to go green. Today, every professional
WHITE TOPPING: An Excellent Solution for Pavement Rehabilitation
Concrete Roads were first built by Romans (300 BC – 476 AD). They were quite innovative in the construction with the use of innovative materials viz., use of 'Pozzolana' cement from
Experiences with Stone Matrix Asphalt (SMA)
In the sixties and early seventies, studded tires were used in Germany during wintertime. The wear of asphalt surface courses under the spikes was extreme. Research and investigations on the perform
Advances in Bituminous Road Construction
An ambitious road construction plan is underway in India, which primarily involves bituminous pavements. At the present time, Ministry of Road Transport & Highways (MORTH) Specification for Road and
Sustainable Pavement Engineering
The need for safe, durable and smooth riding pavements on highways and in airports cannot be contended. Construction and maintenance of pavements cost money - which is mostly provided through taxes that
Soil and Aggregate Stabilization for Sustainable Pavement
In Pavement Design and Construction, there is an urgent need of economical and innovative Technology that reduces energy consumption and Green House Gas (GHG) emission apart from providing sufficient
Methodologies for Repair of Cracks in PQC in Concrete Pavements
Large scale construction of Bridges & Highways is going on in India and World over. They are mostly made as rigid pavements using Pavement Quality Concrete (PQC). On one hand, concrete is a very good and strong
BoT based Highway Railway Over Bridge Project
Infrastructure development including highways, bridges, power stations, dams, etc., which was the sole monopoly of the government, has now been opened to private sector participation because of the huge requirements
Clearances Required Under Environment Acts For Highway Projects
Environment Security and development progress are perceived as necessary requisites for sustainable economic growth of any country. The concepts of environmental issues have
The Geometric Design of Roads And Highways
Basic design controls serve as the foundation for establishing the physical form, safety, and functionality of the transportation facility. Some design controls are inherent characteristics of the facility
Types of Pavements used in Road Construction
In near future, the cost of bitumen will go on increasing. So, various alternates to construct the roads are to be explored. Though concrete roads are one of the good alternates, but still their use is limited
Some Critical Issues Pertaining to Road Construction Industry
During the course of inspections carried out by me as a part of various World Bank missions on the National Highways, State Highways and other road construction projects in the country, I have tried to
Sustainable Pavements in India The Time To Start Is Now
The quality of roads dictate the economy of a country and hence the quality of our lives. In India, road transport handles more than 60% of the freight and more than 80% of the passenger traffic. Roads are vital for
Distress Diagnosis, Repair and Retrofitting of Bridges
Rapid industrialization in India after independence required infrastructure for transport of goods and raw materials and that has led to construction of wide network of roads with inbuilt bridges and
Pervious Concrete Pavement for parking areas, pathways, Sustainable Porous and storm water drainage
No fine concrete, (NFC) an innovative/modified form of cement concrete (also known as pervious concrete) is a environment–friendly and lower cost material which can be used for the construction of
Right Grade of Bitumen for Flexible Pavements: Indian Perspective
Indian road transportation infrastructure is rapidly expanding with the ambitious development of road networks under National Highways Development Programme (NHDP), State Highways Improve
Early Cracking of Concrete Pavement - causes and repairs
Hundreds of kilometers of concrete pavements are being constructed in the country under National Highway Development Programme (NHDP). Some of the concrete pavements have already been opened to traffic while some others are due to
EPC/ Turnkey Contracts in Highway Sector
The EPC way of executing a project is gaining importance worldwide. But it is also a way that needs good understanding by the EPCC, for a profitable contract execution. In an EPC contract, coordination with various agencies is a demanding task, especially
PAVESCAPE Concrete for Low Volume Traffic Pavements
Due to the tremendous development in the infrastructure, major cities in India are getting covered with buildings and impermeable concrete. Concreting everywhere leads to environmental issues such
Strength Evaluation of Flexible Pavement of Runway Using Benkelman Beam Deflection Technique for Surat Airport Project
The performance of flexible pavements is closely related to the elastic deflection of pavement under the wheel loads. The deformation or elastic deflection under a given load depends upon surgrade soil type, its moisture
Use of Waste Plastic in Construction of Flexible Pavement
Polymer modified bitumen is emerging as one of the important construction materials for flexible pavements. Use of plastic waste in the construction of flexible pavement is gaining importance because of
