Concrete Flashcards
Where did romans get their pozzolana and prumice?
Mount Vesuvius
Why was roman concrete so good?
It was very strong but best of all, it cured in water. Most significant material in Roman Empire
How is modern concrete cured?
Using water
Concrete properties
Brittle, strong in compression, weak in tension, opaque, insukating, heavy
What is Bitumen
It is a polymer, used widely today in paving and roofing because it is stable at high temperatures like 300 F
Cement vs Concerete
Cement is the binder while Concrete is the composite.
What are the three parts of concrete?
Clinker, sand, rock
What is smart concrete?
Concrete that has sensors and other technologies embedded into it to allow for better detection of the state of concrete like its moisture.
What are the 2 main sources of emissions in relation to production of concrete?
- Calcination of the Limestonereleases CO2 in the atmosphere ( CaCO3 => CaO + CO2)
- The energy required to produce the heat needed for the reaction
What are composites? What is an example?
Material constructed from two or more components to allow for greater physical or chemical properties.
An example is reinforced concrete with steel as steel is good in tension and compression while concrete is good in compression but bad in tension. Also both materials have similar melting points.
Roman Bath Complexes
-Loosened social Restrictions
Roman Colosseum
-Reinforced social restrictions
What is pozzolani Cement?
Cement that is cured underwater. Created in Roman empire.
