UStudy aims to provide Educational Content for Polytechnic College students based on the latest K Scheme syllabus of Tamil Nadu.
Macadam is a type of road construction pioneered by the Scotsman John Loudon McAdam in around 1820. The method simplified what had been considered state-of-the-art at that point. Single sized aggregate layers of stone with a coating of binder as a cementing agent are mixed in an open-structured macadam.
McAdam's method was more simple and yet more effective at protecting roadways: he discovered that massive foundations of rock upon rock were unnecessary, and asserted that native soil alone would support the road and traffic upon it, as long as it was covered by a road crust that would protect the soil underneath from water and wear.
See More Water Bound Macadam Road Details