What’s the Best Way to Test Concrete Strength

Concrete Coring can be applied to many applications, and that includes coring for concrete test. Most often, engineers and consultants will use this data to determine if all works follow specification or if any strengthening works are required. Concrete Core testing represents the most reliable method of establishing in-situ concrete strength which becomes the unique tool for safety assessment of existing concrete structure.

A concrete core test aims to assess the potential strength, in-situ cube strength, load to carry, and the extent of deterioration which ultimately, is to ensure the structure is safe and strong. In Malaysia, detailed guidance and recommendations regarding coring and testing can be found in Concrete Society TR11 (1987) & BS 1881 Part 120 (1983) document.

The operators setting up the machine to core through bored piles
The operators setting up the machine to core through bored piles.
Some of the concrete blocks for concrete test
Some of the concrete blocks for concrete test

Once a cylindrical sample is extracted from the surface, the cores are first inspected to look for the degree of compaction, distribution of aggregates, crack defects, and honeycombing among others. Then, it will be sent to a lab to undergo a concrete compression test in moist conditions.

Other than determining the concrete compressive strength and density, the samples can also be used to see the depth of concrete carbonation, chemical analysis, water or gas permeability, and many more depending on where the structure is built and what the cement is employed to resist.

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