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Core Cutting Test
core cutting test is needed to assess one or a combination of the following:
1. The quality of the concrete provided to a construction (potential strength).
2. The quality of the concrete in the construction (in-situ strength), known as actual strength.
3. The ultimate capacity of the structure to carry the imposed loads; actual loads, design loads, and new additional loads.
4. The deterioration in a structure due to overloading, fatigue (bridge structures, machine base, etc.), chemical reaction (ASR or chemical spillage, etc.), fire or explosion, and weathering.
• The reinforcement is detected at planned location with the help of Rebar Locator to avoid cutting of reinforcement.
• The Cores are transported to the laboratory & visual observations of cores are recorded for interpretation purpose. Reinforcement bars, if encountered, are cut off.
• Both the ends are prepared by grinding up to the tolerance limit as specified by Clause 4:8 of BS 1881: Part 120: 1983 for flatness & parallelism.
• The Cores are removed from water cut to the required L/D ratio of 2, wherever possible, exactly perpendicular to the longitudinal axis.
• A thin layer of plaster of Paris is applied to ends to ensure proper contact.
• Now the cores are ready for compression testing.