Gardco :: Schmidt Test Hammers

Features

Original Schmidt Concrete Test Hammer

Type N Schmidt Test Hammer is designed for testing concrete items 4” (100 mm) or more in thickness, or concrete with a maximum particle size less than or equal to 1.25” (32 mm). Type N hammer is also used for the testing of massive rock. Impact energy is 1.6 ft-lbs (2.207 Nm). Units have 1,450 psi to 18,150 psi (10 to 70 N/mm2) compressive strength. Testing Standards for N: ASTM C 805, D5873; BS 1881: Part 202

Type L Schmidt Test Hammer operates with significant lower impact energy, making this hammer the ideal option for testing thin walled items with a thickness between 2” and 4” (50 to 100 mm) or for testing small components. The Type L is suitable for testing cast stone components which are sensitive to impact. In rock mechanics, the Type L hammers are commonly used for classification testing of rock cores and brittle rock. Testing Standards for L: ASTM D5873; ISRM Suggested Method for Rebound Index of Rock Cores.

SilverSchmidt Concrete Test Hammer

Concrete strength and uniformity evaluation using patented optical rebound hammer technology
Schmidt hammers by Proceq, the inventor of rebound hammer technology, have long been the global benchmark for non-destructive compressive strength estimation. Silver Schmidt OS8200 is as accurate, reliable, and versatile as ever - and now, connected, thanks to its optical measurement technology paired with digital productivity features and user-friendly mobile apps.

Our patented optical technology delivers compressive strength measurements with a higher range and far lower dispersion than any classical rebound hammer; and our versatile connectivity increases operator productivity and makes instantaneous reporting possible, from anywhere, anytime.

Strength estimation at a fraction of the cost and lead time, and without the mess of coring
Best-in-class strength correlation
Applicable from fresh to high strength concrete
Instant report generation on the go
Long service intervals
Combination With Other Methods - Ultrasonic pulse velocity (SONREB) with Pundit 200
Connected digital hammer with instantaneous reporting and data sharing thanks to a user-friendlyÂ mobile app (Apple® iOS or Android™)
Stand-alone digital hammer with automatic calculation of the rebound value.
Digital hammer wirelessly connected to a Bluetooth printer for direct print-out of test result
Silver Schmidt accuracy - The Q-value brings greater accuracy at higher strengths. Independent testing by the German Committee for Structural Concrete and the Bundesanstalt für Materialforschung und Prüfung (BAM) has consistently demonstrated that the Q-value featured in Silver Schmidt OS8200 is much better suited for working with high strength concrete. Furthermore, similar studies carried out in Germany, China and Japan have proven that the Q-value delivers tighter, more accurate correlations for custom material curves.
Original Schmidt Live mobile app
- Flexibility for all applications - Correlation to custom materials in accordance with major standards. Apply user defined corrections for carbonation, form factors, etc.
- Compliance to standards - Select standard units and form factor. Hammer verification management according to requirements of major standards. Automated EN13791 test region screening test report
- Collaboration and reporting - Visual report generation using lists, bar charts and statistics. Single and multiple series export in PDF or CSV format. Logbook annotations for full traceability (geolocation, text, images, voice)

Technical Data

Original Smith Concrete Test Hammer Technical Data
Mechanical Data	Type N	Type L
Impact Energy:	2.207 Nm (1.63 lb ft)	0.735 Nm (0.54 lb ft)
Concrete Compressive Strength Range:	10 to 70 N/mm2 (1,450 to 10,152 psi)
Electrical Data
Display:	Mechanical

SilverSchmidt Concrete Test Hammer Technical Data
Impact Energy:	2.207 Nm (N), 0.735 Nm (L) 10 to >100 N/mm2 (1,450 to >14,500 psi) L-hammer with optional mushroom plunger: 5 to 10 MPa (725 to 1,450 psi)
Instrument Firmware:	Automatic calculation of rebound value according to international standards
Display:	Any compatible Apple® iOS device
Memory:	Instrument memory > 20,000 impacts, Display memory - Memory of iOS or Android device
Connections:	Low energy bluetooth, USB for charging and updates
Measurements:	Impact angle independent Displays the series on-screen as you work Series validity checked automatically Review an entire series Delete impacts Test region reporting Select units, form factor and correlation curves Create your own custom curves Create custom curves databases for your own mixes
Report Generation:	Single, multiple series, test region (uniformity, EN13791)
Languages:	English, German, Japanese, Chinese, Korean, Spanish, Portuguese, Italian, French, Russian
Battery:	Standard AAA, alkaline or rechargeable
Battery Lifetime:	> 20,000 impacts between charges
Operating Temperature:	0° to 50° C

Instructions for Use

To operate the concrete test hammer first place the impact plunger against test surface and apply pressure until plunger disappears; the hammer will release.

The scale pointer reading gives rebound value in percent of the forward movement of the hammer mass.

Applications

Original Schmidt Hammer

Paper (Type L)
Concrete
Geology
Uniformity testing
In-situ strength estimation
Rock testing
Large paper rolls

SilverShmidt Hammer

Fresh concrete strength estimation
Normal concrete strength estimation
High strength concrete strength estimation
Concrete uniformity testing
Custom correlation to compressive strength
Low strength (<5 Mpa) concrete testing
In-situ rock testing on massive rock (Type N)
Concrete testing on thin (less than 100 mm thick) samples (Type L)
Rock testing on cores according to ASTM D5873 (Type L)
Hardness testing of paper rolls (Type L)
Compressive strength estimation; concrete: 10 to 70 N/mm2/ 1450 to 10152 psi (Type N)
Screening of concrete to identify coring locations (Type N)
Uniformity testing of concrete (Type N)
Paper: Type L

Concrete Test Hammers

Features

Technical Data

Instructions for Use

Applications

Concrete Test Hammer Video

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