Lugeiyamu*, 1Lameck; Mensahn, 2Elvis S K; Coffi Zonou, 3Marius
 (National Institute of Transport, 2023)
In recent years, a hot mix asphalt layer, known as an underlayment, has been replacing 
granular sub-ballast in high-speed and heavy haul tracks, aiming to overcome the 
limitations of traditional ballasted railways. ...