Stone Matrix Asphalt Indian Experiences
Introduction
Over the years India has seen a tremendous rise not only in the traffic volume, but heavy loading as well. Vehicles carrying heavy loads, have special designed tyres, which are inflated to high pressure, causing high stress on pavement. Under these conditions, conventional dense grades mixes are not rut resistant. STONE MATRIX ASPHALT – SMA, a gap graded mix, is highly rut resistant, tough, stable, skid resistant, with high quantity of coarse aggregates, relies on stone on stone contact, to provide strength & rich in binder, to provide durability. SMA was developed in Germany in the late 1960's & since 1970's has been used extensively in Europe & since 1990's in USA. SMA is used for wearing courses and binder courses (DBM).This is a premium article available exclusively for our subscribers.
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NBM&CW March 2017
