资讯

Wet concrete on skin can cause everything from mild redness to third-degree, permanently disfiguring chemical burns. You and your helpers should take these steps: Wear eye protection. Sandy concrete ...
When most people think of concrete, they bring up images of sidewalks and driveways, roads, and buildings. Not the most glamorous of objects in our everyday lives, but they don’t really show off the ...
The world gets a little greyer every year. According to a paper published in 2014 concrete—an aggregate material made by mixing cement, sand and gravel—is the second-most consumed substance in the ...