Wednesday, November 18, 2020, 15:30 GMT+7 vnexpress
Claimed to last for at least 50-70 years, stones used to pave major streets in Hanoi are falling apart only a few years after they were installed.
Three years ago, Hanoi’s authorities introduced a new set of regulations on road renovation, which slated a complete transition of paving material from bricks to natural stone on 900 streets of the capital city for the end of 2020.
In the process, natural stone was praised as a sturdy paving material which can last for at least 70 years.
