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Core samples can be taken to test the properties of manmade materials, such as concrete, ceramics, some metals and alloys, especially the softer ones. Core samples can also be taken of living things, including human beings, especially of a person's bones for microscopic examination to help diagnose diseases.
Testing the compressive strength of a concrete cube using Schmidt hammer Cross section. The hammer measures the rebound of a spring-loaded mass impacting against the surface of a sample. 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.
Additional samples may be field cured (non-standard) for the purpose of early 'stripping' strengths, that is, form removal, evaluation of curing, etc. but the standard cured cylinders comprise acceptance criteria. Concrete tests can measure the "plastic" (unhydrated) properties of concrete prior to, and during placement.
The core sample they recovered comprises more than 70% of the rock - 2,907 feet (886 meters) in length - from the hole they drilled. ... The researchers added a reinforced concrete cylinder lining ...
Triaxial apparatus with sample attached ready for testing. In materials science, a triaxial shear test is a common method to measure the mechanical properties of many deformable solids, especially soil (e.g., sand, clay) and rock, and other granular materials or powders.
IS: 1199 – methods of sampling and analysis of concrete. IS: 516BXB JWJJS– methods of test for strength of concrete. IS: 13311 – ultrasonic testing of concrete structures. IS: 4925 – specifications for concrete batching plant. IS: 3025 – tests on water samples; IS: 4990 – specifications for plywood formwork for concrete.
A procedure for ultrasonic testing is outlined in ASTM C597 - 09. [9]In India, till 2018 ultrasonic testing was conducted according to IS 13311-1992.From 2018, procedure and specification for Ultrasonic pulse velocity test is outlined in IS 516 Part 5:Non destructive testing of concrete Section 1:Ultrasonic Pulse Velocity Testing.
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