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Often, existing concrete structures will need to be examined and tested to ensure the concrete remains of adequate strength and durability. This test is used to determine the compressive strength of a concrete core, which has usually been extracted from an existing structure. The value of compressive strength can then be used in conjuction with other measured properties to access the conditions of the concrete.
Extraction of concrete cores, achieved by rotary drilling using a diamond tipped hollow barrel, serve as a means of taking a sample of concrete which can then be used to determine various physical properties, but most commonly compressive strength.
Cores can generally be extracted from wherever access allows, and would include floor slabs, walls and columns. 10cm diameter cores, generally afford the minimum diameter required for a representative sample and require less reinstatement than larger diameter cores. 15cm diameter cores will generally give more representative samples than smaller diameter but require more reinstatement.
Available in Two Versions, Electrically Operated or Engine Operated for field operation. The Electrically operated machine is fitted with 3 HP 3 Phase AC Motor while on field use Engine operated models have petrol/kerosene run, air cooled 4 stoke single cylinder engine developing 3 to 4 HP at 3000 RPM. The drive from engine to drill head is through V belt and socket speed reducer with a standard reduction 8:1 and totally enclosed in belt guard and sealed. The engine starts with petrol and later on run on kerosene oil. The engine is with ISI certification Mark. The Engine operated models are fitted a water tank for on site application. Depending upon the application and preference of user, in option to petrol/kerosene driven engines.
Rajiv H. Kansara (M. K. Instruments)
# 23, Block - A,
First Floor, Radhe Mall,
Gayatri Dairy Road,
Khokhra Circle,
Khokhra,
AHMEDABAD – 380 008.
Gujarat - India. - 380008
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