A new kind of concrete called Ductal will allow bridges to hold more weight and last longer. Made of a mixture of sand, cement, water, and small steel fibers, it is 10 times more expensive than traditional materials but also stronger and virtually impermeable, helping bridges become more durable. AMES, Iowa--Bridges take a beating, and it can really break the bank to repair them. Now, researchers are breaking bridges to learn how to build them better and save you money. Justin Doornink spends his mornings underneath bridges. He's an engineering student and, as part of his homework, he's installing sensors to measure the impact of traffic on the bridge. He's trying to figure out how to strengthen the structures. One option is ultra-high-performance concrete, which is made from sand, cement, water and small steel fibers. Brent Phares, a civil engineer and associate director at the Iowa State University Bridge Engineering Center in Ames, says, "It's much, much stronge
Today i' am going to tell you how to Run multiple whatsapp account on a same android phone at same time. There are occasions or times when one needs to have multiple accounts on the same phone such as when you have a dual SIM phone or when you tend to be only one who own a smart phone in your circle of friends or in the family as well. There are many methos to run mutiple whatsapp accounts on your device. But all these require Root access. But today the method i' am going to tell you does not require any root access and it is most easiest method ever. So, Here we begins... In this method you have to simply install a application.OGWhatsApp is a new App which will soon be found in different websites or you can also use this app for your smartphone (ANDROID) mobile devices. OGWhatsApp will provide you to run 2 numbers continuously at one time.