Driveways that use gravel are extremely common and have been for hundreds of years. Why? Because they are durable, easily repaired, attractive, ecologically sound, long-lived, and affordable. Hard to ...

Based on the gas displacement method, this article describes a method for determining the optimal gas type and pressure for measuring cement density, providing a reliable method to characterize porous ...

To make concrete, minerals need to be crushed and cooked in a kiln heated to temperatures above 2,600 °F (1,427 °C) to produce a material known as klinker. The chemical processes involved in the ...

In 2014, hundreds of Angelenos gathered downtown to watch more than 2,000 trucks pour concrete into a vast hole. During that event, Los Angeles set a world record: 80 million pounds of concrete were ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The use of concrete as a construction material has been around for millenia: Historians say that ancient ...