Concrete
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Contents |
[edit] Casting
[edit] Finished structures
 Cinder block (showing aggregate), mortar, and cast concrete. |
 Flower pot, probably made by employees at the norwegian cement mill at Slemmestad |
[edit] Pump
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[edit] Pre-casting
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[edit] Post-casting, broken open
 Fractured seismic test specimen. |
 Burst seismic test specimen. |
[edit] Post-casting, cut open
 Sidewalk, ground down for safety, exposing gravel aggregate. |
[edit] Joints
 Perimeter slab edge joint with incomplete firestop. |
[edit] Through-penetrations
Main Gallery: Firestop
- Concrete structures often have a fire-resistance rating, due to concrete's excellent fire-resistance. Openings must be firestopped to comply with building codes in order to restore the rating of the assembly.
 Unsealed cable through-penetration in control room of coal-fired power plant. |
 Unsealed cable through-penetration in control room of coal-fired power plant. |
 Unsealed cable through-penetration in control room of coal-fired power plant. |
 Firestopped bathtub drain penetration.
Deutsch: Abschottung des Durchbruches einer Wasserabflußleitung durch Brandschutzmörtel
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 Cross barrier in a German power plant using firestop mortar. |
 Cross barrier fire test in Germany |
 Fire test with a firestop mortar inside a concrete floor slab. |
[edit] Secondary Efflorescence
 Secondary efflorescence: Osteoporisis of the concrete. |
 Secondary efflorescence. The red marks are rust (iron oxide) from rebar. |
[edit] history
 Hennebique House (1894-1904 build) first concrete building in France. Bourg-la-Reine |
