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Armin is going to be a construction worker today: he mixes his own concrete mixture from cement, sand, gravel and water. After drying, the concrete is rock hard and very stable. It is even used for building underwater. On a huge construction site at Frankfurt Airport, the mouse team shows how concrete hardens under water. ???? Leave a like if you liked the video! -------------------------------------------------------------- ▶️ More videos on the topic of construction sites: • Construction sites and buildings ???? The page with the mouse: https://www.wdrmaus.de ???? All videos with the mouse in the media library: http://www.wdr.de/k/maus_mediathek ???? The mouse APP: https://www.wdrmaus.de/extras/mausapp... ???? The mouse on Instagram: / diemaus ???? The mouse on Facebook: / diesendungmitdermaus ???? The mouse on Twitter: / diemaus -------------- The show with the mouse is a format that is primarily aimed at children. This means: certain functions such as comments are not available for these videos. #construction site #concrete #underwater