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Concrete Test Hammer (Big) - ASI-632

Concrete Test Hammer (Big) - ASI-632

It is similar to the above but is used for testing concrete with over size aggregates (for which test, cubes promise no reliable results) and for testing concrete roads. Its plunger is wider as such, the amount of concrete reached by the impact is considerably greater. With this model also the results obtained are within +/-20% of the actual compressive strength. The instrument is supplied with two handles which can be attached to the body of the concrete test hammer for carrying out the test easily. Complete with grinding stones.

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ASTM C190 – Summary Table
Standard Number ASTM C190
Title Standard Test Method for Tensile Strength of Hydraulic Cement Mortars
Purpose To determine the tensile strength of hydraulic cement mortars using standardized briquette specimens.
Specimen Type Briquette-shaped mortar specimens (dumbbell shape with narrow cross-section)
Cross-sectional Area Typically 645 mm² (1 in²) at the narrowest section
Apparatus Tensile testing machine with grips suitable for briquettes
Procedure
  1. Prepare standard mortar mix and cast in briquette molds
  2. Cure specimens under standard conditions
  3. Test by applying tensile force until failure
Calculation Tensile Strength = Maximum Load / Cross-sectional Area
Units Results are expressed in MPa or psi
Significance Provides data on the cracking resistance and durability of cementitious materials under tensile stress.
Applications Used in quality control, mix design evaluation, and research for hydraulic cement products.