313K views · 5.9K reactions | A Volvo EC950F excavating the largest of the 7 rainwater retention ponds at the SEGRO Logistics Park Northampton. The project consists of seven units ranging from 49,000m3 to 110,000m3. | Collins Earthworks Ltd | Facebook

How can a roof drain be repaired without draining all the water? A man grabs a handful of white powder and sprinkles it around the puddle. Within seconds, the powder swells up, blocks the flow, and forms a small circular barrier. He then scoops out the water inside and uses a blowtorch to dry the area, creating a dry workspace. The white powder is a super-absorbent polymer called cross-linked sodium polyacrylate, which can absorb 300 to 500 times its own weight in water, turning into a gel that