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2. Compressive strength - Wikipedia

   en.wikipedia.org/wiki/Compressive_strength

   Cubic or cylindrical samples of concrete are tested under a compression testing machine to measure this value. Test requirements vary by country based on their differing design codes. Use of a Compressometer is common. As per Indian codes, compressive strength of concrete is defined as: Field cured concrete in cubic steel molds (Greece)

3. Properties of concrete - Wikipedia

   en.wikipedia.org/wiki/Properties_of_concrete

   Compression testing of a concrete cylinder Same cylinder after failure. Engineers usually specify the required compressive strength of concrete, which is normally given as the 28-day compressive strength in megapascals (MPa) or pounds per square inch (psi).

4. Compressometer - Wikipedia

   en.wikipedia.org/wiki/Compressometer

   Compressometer for testing concrete stress-strain relation. 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, [1] concrete, soils, [2] and other materials. For concrete, the device usually comprises ...

5. Concrete - Wikipedia

   en.wikipedia.org/wiki/Concrete

   Compression testing of a concrete cylinder. The ingredients affect the strengths of the material. Concrete strength values are usually specified as the lower-bound compressive strength of either a cylindrical or cubic specimen as determined by standard test procedures. The strengths of concrete is dictated by its function.

6. Schmidt hammer - Wikipedia

   en.wikipedia.org/wiki/Schmidt_hammer

   The test hammer hits the concrete at a defined energy. Its rebound is dependent on the hardness of the concrete and is measured by the test equipment. By reference to a conversion chart, the rebound value can be used to determine the concrete's compressive strength. When conducting the test, the hammer should be held at right angles to the ...

7. Universal testing machine - Wikipedia

   en.wikipedia.org/wiki/Universal_testing_machine

   Typical lectromechanical Universal Testing Machine Test fixture for three point flex test. A universal testing machine (UTM), also known as a universal tester, [1] universal tensile machine, materials testing machine, materials test frame, is used to test the tensile strength (pulling) and compressive strength (pushing), flexural strength, bending, shear, hardness, and torsion testing ...

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   mail.aol.com

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9. Arching or compressive membrane action in reinforced concrete ...

   en.wikipedia.org/wiki/Arching_or_Compressive...

   The derivation of the maximum arching moment of resistance of laterally restrained concrete bridge deck slabs utilised Rankin's [21] idealised elastic-plastic stress-strain criterion for concrete, valid for concrete cylinder strengths up to at least 70N/mm 2, which he had derived on the basis of Hognestad, Hanson and McHenry's [23] ultimate ...