WBM Road (Water Bound Macadam Road) | Material & equipment Required For WBM Road Construction | Construction Procedure of WBM Road | Maintenance of WBM Road | Advantages & disadvantages of WBM road
WBM Road (Water Bound Macadam Road):- WBM road stands for Water Bound Macadam Road. It is a type of road construction where coarse aggregate is laid in layers and compacted with water. The interlocking of the aggregates provides stability and durability to the road. WBM roads are commonly used in rural areas and low-traffic urban areas. They are cost-effective and require less maintenance as compared to other types of roads. Material Required For WBM Road Construction:- 1. Stones : Stones of different sizes ranging from 90 to 150 mm are used for the construction of WBM roads. These stones should be hard, durable and weather-resistant. 2. Coarse Aggregates : Coarse aggregates including crushed stones, gravel, and various types of rock are needed for the base layer of WBM roads. They provide strength, stability, and resistance against erosion and traffic loads. The properties of coarse aggregate for water bound macadam road include: i. Strength : The aggregate should have sufficient stre...