Experiences with Stone Matrix Asphalt (SMA)

Experiences with Stone Matrix Asphalt (SMA)

Sant Kumar Sehgal and Bernd Abele

Review

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 performance of surface courses of asphalt concrete (AC) and gußasphalt verified that wear and rutting by studded tires was increased by:
  • high air void content of the surface course,
  • low bitumen content,
  • inadequate quality and quantity of aggregates.
In the end of the sixties, these results were the starting point for several large companies of the asphalt paving industry to develop specific mixes which were published under different proprietary names. Later, all these mixes were standardized and called Stone Mastic Asphalt or Stone Matrix Asphalt like in India (see IRC:SP:79:2008).

In 1975, the use of studded tires was banned. In the following time surface courses with asphalt concrete and prototype SMA mixes showed a different performance of heavily trafficked higways: asphalt concrete with a high bitumen content was disposed to permanent deformation, whereas asphalt concrete with a low bitumen content was disposed to aging and preliminary cracking. However under equal conditions both types of distress were not observed with SMA - surface courses. Practical experiences and observations proved that SMA is a better mix than asphalt concrete. Since high performance highways, especially the "Autobahn," have been an asset of the transportation-system, there has been constant strive for better pavements and asphalt mixes. Consequently, SMA has gradually improved by investigations, tests and feedbacks from highway projects. Finally in 1984, SMA passed the stage of a contractor`s proprietary product. It was standardized and became a part of the German ZTV Asphalt (Technical Specifications and Guidelines for the Construction of Asphalt Pavements), issued by the Federal Department of Transportation.

Years after the successful application of the Stone Mastic Asphalt principle in Germany, other European countries are using this philosophy also for heavy traffic roads. Now, many countries worldwide have taken over the philosophy of the Stone Matrix Asphalt.

NBM&CW March 2011

Click Here
To Know More / Contact The Manufacturer
Please fill in your details, we will contact you as soon as possible
Choose Title from the listPlease let us know your name.
Please let us know your Designation.
Invalid Input
Please let us know your email address.
Please let us know your City.
Please let us know your Contact Number.
Please brief your query.
Our other value-added services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Equipment & Machinery
Invalid Input
Building Products
Invalid Input

Suggestive Framework for Mitigating Project Delays in Indian Roads & Highways Sector

Time delay had been a common phenomenon associated with nearly all road construction projects in India but very little effort and studies had been done to amputate the phenomenon.The objectives of this study provided industry Read More ...

Characterisation of Foundry Sand Waste Material for Road Construction

Characterisation of Foundry Sand Waste Material for Road Construction Different types of waste materials viz. copper slag, zinc slag, steel slag, manganese slag, phosphogypsum slag, cinder, red mud, kimberlite, lime sludge, foundry sand, coal ash, jarofix, jarosite, manganese slag, marble dust etc Read More ...

Thin Whitetopping Cement Concrete Overlays on Bituminous Pavements:

Concrete is a very durable and versatile material for the construction of roads and highways. Several highways, expressways, and city roads have been constructed with cement concrete in the recent past in India. Cement concrete Read More ...

A Transformative Approach to Highway Construction

An 18-mile stretch of Georgia interstate is pushing the technological envelope with respect to safety and sustainability in road construction. By leveraging solar energy, recycled tires, vehicle telematics data and valuable roadside Read More ...

Accelerated Pavement Testing

Accelerated Pavement Testing images/Road-Pavements/40594-APTtesting.jpg The Indian road network is mainly built with flexible pavements, because of ease of construction and low initial cost as compared to concrete pavements. The flexible pavements are designed as per Indian Roads Congress Read More ...

Pavement Maintenance Management System

An efficient road transportation system is of vital importance to the economy of a nation. Road transport occupies a dominant position in the overall transportation system of India due to its advantages in terms of easy availability, flexibility Read More ...

Cement Grouted Bituminous Mix for Flexible Pavements

India has the second largest road network with heterogeneous traffic conditions. Although the road construction in India has improved a lot in the last two decades, at times, it is observed that the pavements, especially in urban areas Read More ...

Whitetopping Durable and Cost-effective Solution for City Roads

Concrete is a very durable material for the construction of roads and highways. Cement concrete has been used for the construction of new roads, highways and also for the rehabilitation of existing distressed bituminous pavements Read More ...

Utilisation of Waste Materials in Road Construction

The Road sector has been receiving a lot of attention by the central as well as state governments during the last two decades. As a result, new roads are being constructed and existing ones are being upgraded to meet the traffic demand Read More ...

Construction of Sustainable Pavements Through Recycling

Increased connectivity and improved road infrastructure developed in the country in the recent past has resulted in significant increase in the growth of traffic in terms of the number of vehicles and axle loads. However, the increased Read More ...

StrataWeb®: An Innovative Solution for Embankment Slope Protection Stabilization

Side slope erosion has always been an issue for highway embankments. Especially during the monsoons, these slopes pose a challenge. The Larsen & Toubro-IDPI SPV, constructing its 163km long Rourkela-Sambalpur toll-way road Read More ...

Role of Concrete in - Road Infrastructure

In India, the emphasis in recent years has rightly been on the housing and infrastructure, including, amongst other things, roads, power and irrigation sectors. The Global Infrastructure Outlook reflects that rising income levels Read More ...

Ammann ARS 121 Soil Compactors deployed at 354-km Purvanchal Expressway

Ammann ARS 121 Soil Compactors are bringing efficiency to an enormous, high-profile roadbuilding project in India. The compactors are handling soil work for a key section of the 354-km Purvanchal Expressway, the longest current Read More ...

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 ...
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