Warm Mix Asphalt - A Smart Solution for Building Sustainable Pavements in India


Warm Mix Asphalt

Rajib B. Mallick, PhD, PE, Ralph White Family Distinguished Professor, Civil and Environmental Engineering Department, Worcester Polytechnic Institute (WPI), Worcester, MA 01609. A.Veeraragavan, Professor of Civil Engineering, Indian Institute of Technology Madras, Chennai.

Introduction

The first national workshop on Warm Mix Asphalt (WMA) in India was held on August 8th and 9th at IIT Madras (IITM), under the sponsorship of several major industries, and direction of the faculty members of the Civil Engineering department at IITM. More than 200 representatives from the academia, government and industry actively participated in this workshop, which consisted of lectures, videos and vigorous discussion on the subject of WMA. Judging from the participation, the workshop was a grand success! But one wonders, what is it that made the workshop a success? Why did 200+ people (even through a holiday) took the pain to attend it and actively participate in it? The answer is, more than anything else, the topic itself! WMA is a smart technology that can help engineers realize their dream of constructing good performing and long lasting pavements, and at the same time, decrease energy consumption, emissions and increase the use of reclaimed asphalt pavement (RAP) materials significantly. Too good to be true? Not quite! Every bit about WMA is true, and the rest of the article shows why it is so good.

WMA

As we all know, because of high viscosity of asphalt binders (bitumen), both aggregates and bitumen need to be heated to high temperatures (generally > 150C) for proper mixing, laydown and compaction of asphalt mixes, commonly known as Hot Mix Asphalt (HMA). The high temperature requires the use of significant amount of fuel, and also result in fumes and emissions in the plant and at site. Although well below dangerous levels, these emissions are hazardous and anything that could be done to reduce them, is a step towards the right direction. The rate of emission actually doubles for every 10C rise in temperature.

NBMCW September 2013

Ashoka Buildcon constructs Package 4 of landmark Eastern Peripheral Expressway project

Ashoka Buildcon, which was awarded package 4 of the EPE project, constructed 22km of the 135 km EPE, at a cost of ₹789 crores. It built three grade separators, one ROB, 12 VUPs, 22 PUPs, four minor bridges and 20 Read More ...

Wirtgen: Cold milling machines have a decisive impact on quality of road rehabilitation

Wirtgen offers the widest range of cold milling machines in the industry. Customers can choose from more than 30 different types of machines, with each also available with a variety of milling widths. The lower Read More ...

Smart Pavement Materials and Emerging Technologies

Smartness describes self-adaptability, self-sensing, and multiple functionalities of the materials. These characteristics provide numerous possible applications of such materials in manufacturing and civil Read More ...

Repair of Scaled Surface Areas of Newly Constructed Cement Concrete Pavement Slabs

After 2014, the speed of the construction of cement concrete road for national highways and expressways, in cities and even at village level has significantly increased due to the policy adopted by the Government of India Read More ...

ArcelorMittal Long Products - Benefits of steel solutions in bridge design

Today's modern bridge construction projects face totally new challenges. The public, the regulators and the authorities demand structures that are cost effective during their planning, execution, lifetime and dismantling. Read More ...

From Yarn to Bridges – Strata Takes Another Giant Leap in Technical Textiles

Strata Geosystems, a global leader in the soil reinforcement industry, has opened its new state-of-the-art manufacturing facility, which will meet the growing demand for geosynthetic products in India and around the Read More ...

Bogibeel Rail-cum-Road Bridge

There are a lot of legends and prophesies floating with the current of the mighty Brahmaputra River as it tracks its course from Tibet to Bangladesh, roaring down through narrow chasms and gobbling up land in its pursuit Read More ...

Advantages of Precast Concrete in Constructing Highways & Bridges

Prefabrication of any structure component off-site during highway construction (or reconstruction) offers major time and user cost savings in comparison with the traditional cast-in-place methods of construction. Read More ...

Long-life Pavements - European & American Perspectives

Long-life Pavements European & American Perspectives Road infrastructure investment has increased less in many countries than road traffic. If these trends continue, the outcome will be increasing intensity of Read More ...

Performance Management for Durable Pavements

Satisfactory pavement performance can be assured only with an appropriate design with a well-calibrated algorithm, material selection based on the appropriate mix design, proper processing of the materials for Read More ...

Experimental Study on Tunnel Excavation Muck for Road Construction

Substantial parts of India are covered by hills and Himalayas stand foremost among them. The border areas in the North and North-East of our country are mountainous with steep topography, difficult and hazardous Read More ...

Geocells For Pavement Reinforcement

Roads are essential for the economic growth of the country, and unlike the railway network, various classes of roads-from expressways to rural road, assure last mile connectivity. India’s growing economy requires Read More ...

Pervious Concrete Technology for Urban Roads and Pavements

Pervious Concrete Technology for Urban Roads and Pavements In recent years, the rise in employment and higher standard of living, amongst numerous other factors, has led to a gradual shift of people from rural to urban Read More ...

Durable and Economical Technology for Bituminous Surfacing of Rural Roads

The Pradhan Mantri Grameen Sadak Yojna (PMGSY) has been one of the most successful flagship programmes launched by former Prime Minister Atal Bihari Vajpayee in 2000 for constructing a wide network of rural roads Read More ...

Precast Concrete - Smart Pavement - The future of road building

The term “information superhighway” was introduced in the 1990s. Back then, it was used to describe a worldwide communications network. Today, Kansas City, Mo.-based Integrated Roadways is putting a different Read More ...

Faster & Better Road Construction is Possible

Road Transport & Highways minister Nitin Gadkari has time and again been urging to use more of innovative techniques and materials for faster and better-quality construction of roads and highways. While launching Read More ...
NBM&CW

New Building Material & Construction World

New Building Material & Construction World
MGS Architecture

Modern Green Structures & Architecture

Modern Green Structures & Architecture
L&ST

Lifting & Specialized Transport

Lifting & Specialized Transport
II&TW

Indian Infrastructure & Tenders Week

Indian Infrastructure & Tenders Week