WASHINGTON : The ancient Romans were brilliant engineers and builders, creating a dazzling array of magnificent structures including some that have survived to modern times virtually intact like the domed Pantheon in Rome. An indispensable material for the Romans was a form of concrete they developed that
WASHINGTON : The ancient Romans were brilliant engineers and builders, creating a dazzling array of magnificent structures including some that have survived to modern times virtually intact like the domed Pantheon in Rome.
Many of these structures have endured for two millennia while modern concrete counterparts sometimes crumble in mere years or decades. "This is an important next step in improving the sustainability of modern concretes through a Roman-inspired strategy. We were able to translate some of the features in ancient Roman mortars that can be associated with self-healing into modern analogs with great success," Masic added.Roman concrete contains white bits called"lime clasts," remnants of the lime used in the concrete.
The Pantheon, dating to the 2nd century AD, is a circular concrete building faced with brick, boasting the world's largest and oldest unreinforced concrete dome. The massive Roman Colosseum, dating to the first century AD, also would have been impossible without concrete.
日本 最新ニュース, 日本 見出し
Similar News:他のニュース ソースから収集した、これに似たニュース記事を読むこともできます。
United States, South Korea to partner on advanced air mobility developmentWASHINGTON : The U.S. Federal Aviation Administration (FAA) said on Saturday it had agreed to partner with the Korea Office of Civil Aviation (KOCA) future Advanced Air Mobility aircraft development and operations.The two nations signed a declaration to collaborate and share information on advanced air mo
続きを読む »
Apple Watch Series 8 review: New cycle tracker feature makes it a girl's new best friendWhoever said ‘Diamonds are a girl’s best friend’ has never met the Apple Watch Series 8. When Apple released the new Apple Watch Series 8 last September, there was one key feature that stood out for women – cycle tracking. This new feature helps women keep track of their menstrual cycle and, among other things, aid with family planning. And...
続きを読む »
Excitement at Hong Kong's China border as quarantine liftedThe border between mainland China and Hong Kong did away with most Covid-19 travel restrictions on Sunday. Read more at straitstimes.com.
続きを読む »
China welcomes back international travellers on quarantine-free travelInternational travellers only need to produce a negative Covid-19 test 48 hours before travel. Read more at straitstimes.com.
続きを読む »
Home and Away's Isla Fisher, 46, stuns in revealing swimsuit: 'Divine'Former Home and Away star Isla Fisher looked incredible in the pink cut-out swimsuit while soaking up the sun. Read more.
続きを読む »
Cummins defends Agar as spin option for India Test series(AFP) Skipper Pat Cummins said he is confident Ashton Agar will tour India next month despite the left-arm spinner's wicketless performance in Sunday's dra
続きを読む »