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Arch 213 Notes

Arch 213 Notes - Arch213Notes 20:37 ConcreteStructures...

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Arch 213 Notes 20:37 Concrete Structures: Mt. Vesuvius – volcanic ash / origins of concrete The basic origins of concrete o Formula was lost with the fall of the Roman Empire o Then knowledge was regained in England with the patent of ‘Portland  Cement’ in 1824 o Hydration – chemical process that hardens concrete all cements need water to harden into a form o concrete sucks ass in tension o the late 19 th  century brought the birth of ‘reinforced concrete’   o Reinforced Concrete provides tensile capacity using steel Forms of concrete: o Site cast / cast-in-place / in site o Wet concrete mix is poured into formwork in a formal position o Precast – cast and cured at a different location Tilt-up construction CMU blocks are precast CMU – Concrete Masonry Unit Voids in CMU blocks are there to be filled with reinforce concrete Helps for wind pressure and earthquake loads SIP – Structural insulated panels
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Concrete used in almost all building structures You can either cast in place or cast off site and bring to site at to be  determined date Advantages of Concrete: o High compressive strength o High stiffness o Inertial resistance Large mass / weight
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