Concrete
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Making[edit]
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foundation slab
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Trowel machine
Finished structures[edit]
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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
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earthquake rubble training
Pump[edit]
Pre-casting[edit]
Post-casting, broken open[edit]
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Fractured seismic test specimen.
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Burst seismic test specimen.
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reinforcement
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reinforcement
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reinforcement
Post-casting, cut open[edit]
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Sidewalk, ground down for safety, exposing gravel aggregate.
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English: Minor casting defects.Nederlands: Kleine gietfoutjes.
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microstructure
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calcite additive
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recycled materials
Joints[edit]
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Perimeter slab edge joint with incomplete firestop.
Through-penetrations[edit]
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
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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.
Secondary efflorescence[edit]
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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.
Counterweights[edit]
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33 t counterweight
History[edit]
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Hennebique House (1894-1904 build) first concrete building in France. Bourg-la-Reine
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The “Cathedral” building and the Pont Hardi of the Menier chocolate factory, built in 1906 in a specific reinforced concrete (béton fretté), Noisiel, France.
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earthquake
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earthquake
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earthquake