Sand Roads Prove Durable: engineers test Kalahari base; results reshape rural design
In Free State, South Africa, engineers explored the use of untreated Kalahari sand for road construction through an innovative trial. Various road sections were built using different materials, including untreated sand and crushed rock. Remarkably, after 55 years, these roads remained structurally sound and traffic-worthy. Following successful tests in Botswana,…
The Times of India ·