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Concrete Rebound Test Hammers are ideal for fast, inexpensive, nondestructive estimations of in-place strength of hardened concrete. Concrete rebound hammer tests can help determine where test cores should be taken and locate damage from freezing or fire. Useful range covers concrete strengths from approximately 1,400—8,000psi (10—55mPa).
The plunger rod is pressed against a concrete surface until a spring-loaded mass is released, causing an impact on the concrete. Rebound of the mass is registered on the hammer as the “rebound number”. Included calibration curves provide estimated strength from rebound number, but accuracy is greatly improved by user-produced laboratory correlations with compression test specimens of the same mix design, as described in ASTM C805.
The HM-71 Gilson Concrete Rebound Test Hammer quickly provides reliable estimates of in-place concrete strengths, allowing rapid assessments of large areas and delineation of potential problem area. This reasonably-priced alternative to the original Schmidt brand is Made-in-America and meets all published specifications for these devices. A durable nylon carrying case with loop handle, carborundum stone for surface preparation, instructions and charts are included with the HM-71.
Features:
Cost-effective concrete rebound Test Hammer for reliable strength measurements of hardened concrete
Fast, simple operation for efficient assessments
Compliant with BS 1881-202 and ASTM C805 requirements
The HM-75 Schmidt Concrete Rebound Test Hammer provides rapid nondestructive estimates of in-place concrete strength and is a valuable tool when assessing the need for further testing. The HM-75 is manufactured by the original producer of these instruments and has a proven track record of reliability. It is supplied with a plastic carrying case, charts, instructions and carborundum stone for surface preparation.
Features:
The original concrete rebound Test Hammer
Cost-effective option for concrete strength estimates
Included Items:
Gilson Concrete Test Hammer
Nylon Carrying Case
Carborundum stone
Instructions
Chart
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Comparing Gilson Concrete Test Hammers (HM-71, HM-75)
Теги
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