Concrete
Contents |
[edit] Casting
[edit] Finished structures
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Cinder block (showing aggregate), mortar, and cast concrete.
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Flower pot, probably made by employees at the norwegian cement mill at Slemmestad
[edit] Pump
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[edit] Pre-casting
[edit] Post-casting, broken open
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Fractured seismic test specimen.
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Burst seismic test specimen.
[edit] Post-casting, cut open
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Sidewalk, ground down for safety, exposing gravel aggregate.
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English: Minor casting defects.Nederlands: Kleine gietfoutjes.
[edit] Joints
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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.
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Unsealed cable through-penetration in control room of coal-fired power plant.
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Unsealed cable through-penetration in control room of coal-fired power plant.
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Unsealed cable through-penetration in control room of coal-fired power plant.
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Firestopped bathtub drain penetration.Deutsch: Abschottung des Durchbruches einer Wasserabflußleitung durch Brandschutzmörtel -
Cross barrier in a German power plant using firestop mortar.
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Cross barrier fire test in Germany
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Fire test with a firestop mortar inside a concrete floor slab.
[edit] Secondary Efflorescence
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Secondary efflorescence: Osteoporisis of the concrete.
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Secondary efflorescence. The red marks are rust (iron oxide) from rebar.
[edit] history
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Hennebique House (1894-1904 build) first concrete building in France. Bourg-la-Reine
