The Secret Reason Why Ancient Roman Concrete Is So Remarkably Strong

Roman concrete reached extremely high temperatures while it was mixed—well over 170 degrees Fahrenheit. How could that be?

View in Browser  SHOP EXCLUSIVE SUBSCRIBE TOP STORIES WE CHOSE FOR YOU The Secret Reason Why Ancient Roman Concrete Is So Remarkably Strong Roman concrete reached extremely high temperatures while it was mixed—well over 170 degrees Fahrenheit. How could that be? Read More Feast Your Eyes on the 30 Absolute Coolest Shipwrecks in the World Grab your scuba gear, because we're about to go deep—unless you suffer from thalassophobia. Read More Flying Saucers Are So 1947. This Is the New Shape of the Modern UFO Fifty-two percent of American military UFO sightings are described as white or metallic spheres. So what are they? Read More Amazing New Details May Reveal Exactly What Happened the Night the Titanic Sank There's still so much we don't know about how the ship met its fateful end. This breakthrough could fill in the holes. Read More Say Goodbye to Kinks With These Top-Rated Garden Hose Reels Upgrade your watering routine with an easy-to-use hose reel. Read More These Pool Filters Keep Your Water Clean, Clear, and Ready for Swimming A pool is only as good as its filter. Read More WATCH OUR LATEST VIDEOS The B-2 Can Carry a 20 Ton Payload 6,000 Miles without Refueling Watch Now Don't Take Your Pliers for Granted. Watch How This Family-Owned Business Forges Them Watch Now Follow Us Unsubscribe | Privacy Notice/Notice at Collection PopularMechanics.com ©2023 Hearst Magazine Media, Inc. All Rights Reserved. Hearst Magazines, 300 West 57th Street, New York, NY 10019