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  • Video 
    What is Concrete?

    What is Concrete?

    What's the difference between concrete and cement? Concrete is the most important construction material on earth and foundation of our modern society. At first glance it seems rudimentary, but there is a tremendous amount of complexity involved in every part of designing and placing concrete. This video is meant to be a bare-bones introduction to the topic, with a cool demonstration of concrete strength using a hydraulic press.

    Subjects:
    Building and Real Estate
    Keywords:
    Concrete Cement
    Resource Type:
    Video
     
  • Video 
    Why Concrete Needs Reinforcement

    Why Concrete Needs Reinforcement

    This video shows more destructive testing to answer your questions about concrete. Concrete's greatest weakness is its tensile strength, which can be less than 10% of its compressive strength. So, we often reinforce it to create a composite material strong against all types of stress. This video briefly touches on conventional rebar and prestressed/post-tensioned reinforcement.

    Subjects:
    Building and Real Estate
    Keywords:
    Reinforced concrete Concrete
    Resource Type:
    Video
     
  • Video 
    Was Roman Concrete Better?

    Was Roman Concrete Better?

    This video discusses a few modern techniques that help improve design life of concrete, including roller compacted concrete (RCC) and water reducing admixtures (superplasticizers). There are a whole host of differences between modern concrete and that of the western Roman empire that I didn’t have time to go into, including freeze/thaw damage.

    Subjects:
    Building and Real Estate
    Keywords:
    Concrete construction Roller compacted concrete Concrete -- Additives Concrete
    Resource Type:
    Video