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  • GavinZ4 commented on Dan690 's instructable Plastic Re-enforced Concrete Fail2 years ago
    Plastic Re-enforced Concrete Fail

    From my understanding plastic mesh would be pointless. Concretes compressive strength is extremely high but the negative of conrete is its tensile strength tends to be much lower. A good rule of thumb is tensile str is 1/4 the compressive str. The problem with plastic mesh is it may have a higher ultimate (breaking point) tensile strength than concrete but it will stretch quite a bit under stresses allowing the concrete to break before any support kicks in. you want to use a material with high tensile strength and low elongation for reinforcement. Also you where measure the concrete on its impact ability not load strength. What is your intended use for this?

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