What"s mean by water bound macadam road(WBM)?
Answer Posted / jahane jannat khan
The broken stones of base and surface course,if any are bound by the stone dust is presence of moisture is called WBM Roads. WBM Stands for Water Bound Macadam which is the most commonly used road construction procedure for over more than 190 years.Pioneered by Scottish Engineer John Loudon McAdam around 1820 Macadam is a type of Road Construction.
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