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Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.
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Drying of concrete Exercise 10
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Transcript of Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.
![Page 1: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/1.jpg)
Drying of concrete
Exercise 10
![Page 2: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/2.jpg)
![Page 3: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/3.jpg)
Evaporation of water from K30 concreteEv
apor
ated
wat
er k
g/m
3
![Page 4: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/4.jpg)
Drying time estimates:
![Page 5: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/5.jpg)
90 mm thick ground slab: • made of K30 concrete, • has not been wetted but• has been wet cured for 2
weeks• Drying environment: 18 °C/
RH50 %
When is RH of 85 % reached?
![Page 6: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/6.jpg)
Drying time =basic dying time * w/c ratio * thickness * moisture of the foundation * wetting time * drying conditions
![Page 7: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/7.jpg)
![Page 8: Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.](https://reader034.fdocuments.us/reader034/viewer/2022051621/56649f3d5503460f94c5ce7c/html5/thumbnails/8.jpg)
Drying time =basic dying time 17 weeks * w/c ratio factor 1,0 * thickness factor 1,4 * moisture of the foundation factor 1,0 * wetting time 1,0 * drying conditions 0,9 ≈ 21 weeks