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2. Hydrophobic concrete - Wikipedia

   en.wikipedia.org/wiki/Hydrophobic_concrete

   Is often used to hold water to create pools and ponds. NASA used hydrophobic concrete to build the swimming pool used to train astronauts for walking on the Moon. Hydrophobic concrete is also used in applications that are exposed to rain or rain puddling, such as green roofs, other kinds of roofs, parking structures, and plazas. [citation needed]

3. Waterproofing - Wikipedia

   en.wikipedia.org/wiki/Waterproofing

   Masonry walls are built with a damp-proof course to prevent rising damp, and the concrete in foundations needs to be damp-proofed or waterproofed with a liquid coating, basement waterproofing membrane (even under the concrete slab floor where polyethylene sheeting is commonly used), or an additive to the concrete. Within the waterproofing ...

4. Ponding - Wikipedia

   en.wikipedia.org/wiki/Ponding

   When a scupper or drain is clogged or fails for other reasons, storm water tends to pool around that low area. Over time, with each passing storm, the weight of the storm water will deflect the structural system beyond the structure's bending point, thus allowing a bigger puddle to form. As a bigger puddle forms more weight is applied to the ...

5. Puddling (civil engineering) - Wikipedia

   en.wikipedia.org/wiki/Puddling_(civil_engineering)

   Puddle has to be kept wet in order to remain waterproof so it is important for canals to be kept filled with water. The clay is laid down with a tool called a 'punner', or 'pun', a large rectangular block on a handle about 5 feet (1.5 m) long, or trodden down, or compacted by some other means (e.g. by an excavator using the convex outside of ...

6. Retention basin - Wikipedia

   en.wikipedia.org/wiki/Retention_basin

   Trounce Pond, a retention basin landscaped with natural grassland plants, in Saskatoon, Saskatchewan, Canada The Corporate Park retention basin in Stafford, Texas, United States A Retention pond guarded by concrete wall and surrounded by Taro plants in an Semi-urban indian Town Retention basin in Pinnau, Schleswig-Holstein, Germany

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