Lesson plan
Compressometer
A compressometer is a device used to determine the strain or deformation of a specimen while measuring the compressive strength of concrete specimens, generally a cylinder. It can be used for rock, concrete, soils, and other materials. For concrete, the device usually comprises two steel rings for clamping to the specimen and two gauge length bars attached to the ring. When the compressive load is applied, the strain value is registered from the compressometer. Generally, a data logger is used to record the strain. The stress strain curve is then used to determine the static Young's modulus of elasticity and Poisson's ratio of concrete. ASTM C469 describes about the instrument.
Article summary
A compressometer is a device used to determine the strain or deformation of a specimen while measuring the compressive strength of concrete specimens, generally a cylinder. It can be used for rock, concrete, soils, and other materials. For concrete, the device usually comprises two steel rings for clamping to the specimen and two gauge length bars attached to the ring. When the compressive load is applied, the strain value is registered from the compressometer. Generally, a data logger is used to record the strain. The stress strain curve is then used to determine the static Young's modulus of elasticity and Poisson's ratio of concrete. ASTM C469 describes about the instrument.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.