GCE

Concrete Testing

HOKLAS Accredited Tests

Sampling of fresh concrete on site

Slump

Slump flow test

Compacting factor

Density of compacted fresh concrete

Making of test beams from fresh concrete

Curing of test specimens

Assessment of the cement, aggregates and water contents of fresh concrete (Pressure filter Sandberg method)

Flow table test

Temperature of fresh concrete

Temperature rise evaluation test

Heat of hydration monitoring (temperature monitoring of concrete structure)

Setting time monitoring

Bleeding test

Hardened Concrete

HOKLAS Accredited Tests

Compressive strength of concrete cubes in the force range 50 kN - 3000 kN

Obtaining core samples

Compressive strength of concrete cores in the force range 50 kN - 3000 kN

Dry cutting of mini-cores

Density of hardened concrete

Tensile splitting strength of cylinders in the force range 50 kN to 3000 kN

Water absorption

Obtaining drilling powder samples

Removal of concrete cover to expose reinforcement

Compressive strength of concrete cores in the force range 50 kN – 3000 kN

Flexural strength of beams in the force range 2 kN – 50 kN

Concrete’s ability to resist chloride ion penetration

Electrical indication of concrete’s ability to resist chloride ion penetration

Alkali silica reaction potential by ultra-accelerated mortar bar test

Depth of penetration of water under pressure

Flexural toughness and first-crack strength of fibre reinforced concrete (using beam with third point loading)

Initial surface absorption

Stiffening time

Tensile splitting strength of cylinders in the force range 50 kN to 3000 kN

Concrete Diagnostic

HOKLAS Accredited Tests

Carbonation test

Covermeter survey

Half-cell potential measurement

Resistivity measurement

Surface hardness measurement

Ultrasonic pulse velocity measurement