• New
    Schmidt® rebound hammers for concrete strength and rock testing

Schmidt® rebound hammers for concrete strength and rock testing

  • Proceq - Original, OS-120, Rock, Original OS8000

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The original rebound test hammers for compressive strength and homogeneity assessment

The Original Schmidt was invented and introduced into the market by Proceq in the 1950s. Since that time it has become the world’s most widely used instrument for non-destructive estimation of concrete strength properties, standardized in every major region. Not limited to concrete it is also used for rock, paper and mortar. Proceq rebound hammers are available in models with different impact energies, each designed for a specific test application. The latest models are the Original Schmidt Live, a fully connected hammer operating on iOs and Android and now the new SilverSchmidt OS8200 combining the proven accuracy of SilverSchmidt with all of the time saving reporting advantages of the live environment.




Original Schmidt

Description

The classic Original Schmidt hammer that became the basis of every major rebound hammer testing standard worldwide.

Features

  • Various models with different impact energies to cover a wide range of applications
  • Proven durability and quality compared with low cost copies 
  • Established Proceq Swiss Made accuracy and reliability 

Impact Energy
2.207 Nm (N),0.735 Nm (L)
10 to 70 N/mm2 (1'450 to 10'152 psi)

Standards
EN 12504-2, EN 13791, ASTM C 805, JGJ/T 23, JIS A 1155, ISO/DIS 8045, ASTM D 5873 (Rock), ГОСТ 22690

Guidelines
ACI 228.1R







Schmidt OS-120

Description

The Schmidt OS-120 pendulum hammers are designed to test on softer material such as light weight concrete, gypsum boards, fresh concrete and the mortar of joints in brickwork. 

Features

  • Only rebound hammer that provides a test result at compressive strengths below 5 Mpa
  • Large, half circular scale with high resolution 
  • Two models for fresh concrete and mortar applications 
Impact Energy
0.833 Nm

1 to 5 N/mm2 (145 to 725 psi)

Standards
EN 12504-2, EN 13791, ASTM C 805, JGJ/T 23, JIS A 1155, ISO/DIS 8045, ASTM D 5873 (Rock)

Guidelines
ACI 228.1R





RockSchmidt

Description

The RockSchmidt is a variation of the SilverSchmidt adapted specifically for rock testing applications such as UCS correlations or to predict penetration rates for tunnel boring machines and rotary drum cutters. 

Features

  • Correlations to UCS using both ASTM and ISRM recommendations as well as user defined statistis
  • No need to manually record the impact values in the field 
  • Extremely durable with long service intervals when compared with classical hammer 


Impact Energy
2.207 Nm (N),0.735 Nm (L)

20 to 150 MPa Unconfined (or Uniaxial) Compressive Strength (UCS)

Standards
ASTM D 5873 (Rock)

Guidelines
ISRM – Aydin A., ISRM Suggested method for determination of the Schmidt hammer rebound hardness: Revised version. Int J Rock Mech Mining Sci (2008),DOI:10.1016/j.ijrmms.2008.01.020





Original Schmidt 0S8000

Description

The Original Schmidt OS8000 is the Original concrete test hammer, now digitally redefined - and it is also the most advanced R-value hammer ever made, with unmatched performance, ease of use, and versatility, as well as reporting on the go thanks to its mobile app.

Features

  • Strength estimation at a fraction of the cost and lead time and without the mess of coring 
  • Comprehensive mobile apps and web-based functionality enhancing productivity 
  • Light and strong fiber-reinforced shell 
  • Powered by flight-safe AAA batteries
  • Dual displays: analog and backlit digital 
  • All mechanical components are Original Schmidt components to ensure durability and standards compatibility 


Impact Energy
2.207 Nm (N),0.735 Nm (L)

Standards
USA: ASTM C805, ACI 228.1R
Europe: EN12504-2, EN13791
China: JGJ-T23
Japan: JCSE-G504
ISO 1920-7
JIS A1155
Russia: GOST 22690-2015





Original Schmidt 0S8200

Description

Silver Schmidt OS8200 is as accurate, reliable, and versatile as ever—and now, connected, thanks to its optical measurement technology delivering Q-value measurements, paired with digital productivity features and user-friendly mobile apps.

Features

  • Strength estimation at a fraction of the cost and lead time, and without the mess of coring 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


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)


Standards
EN 12504-2
EN 13791
ASTM C 805
ГОСТ 22690


Guidelines
ACI 228.1R
RILEM TC-ISC



Models
Original Schmidt
Schmidt OS-120
RockSchmidt
Original Schmidt OS8000Silver Schmidt OS8200
Instrument Firmware
N/A
N/A

Custom curves

Correlation to UCS

Correlation to E-modulus

Weathering according to ISRM

Rebound according to ASTM and ISRM

Single button programming of settings

Automatic calcuation of rebound value according to international standards

Automatic calcuation of rebound value according to international standards
PC Software
N/AN/A
RockLink for data assessment and export to third party software
N/A
N/A
Display
Mechanical display
Mechanical display
Integrated digital display

Any compatible Apple® iOS device 

Any supported Android™ device 

Any compatible Apple® iOS device
Memory
N/A
N/A
400 series of 10 measurements
Instument memory > 20'000 impacts, Display memory - Memory of iOS or Android device
Instument memory > 20'000 impacts, Display memory - Memory of iOS or Android device
Connections
N/A
N/A
USB interface to PC
Low energy bluetooth, USB for charging and updates
Low energy bluetooth, USB for charging and updates
Measurements
N/A
N/A
N/A

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

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
N/A
N/A
N/A
Single, multiple series, test region (uniformity, EN13791)
Single, multiple series, test region (uniformity, EN13791)
Languages
N/A
N/A
N/A
English, German, Japanese, Chinese, Korean, Spanish, Portuguese, Italian, French, Russian
English, German, Japanese, Chinese, Korean, Spanish, Portuguese, Italian, French, Russian
Battery
N/A
N/A
N/A
Standard AAA, alkaline or rechargeable
Standard AAA, alkaline or rechargeable
Battery Lifetime



> 20'000 impacts between charges
> 20'000 impacts between charges
Operating Temperature
N/A
N/A
N/A
0° to 50°C
0° to 50°C
















Models
Original SchmidtSchmidt OS-120RockShmidtOriginal Schmidt OS8000Silver Schmidt OS8200
In-situ rock testing on massive rock (Type N)

X

X

X

X

Concrete testing on thin (less than 100 mm thick) samples (Type L)

X

X

X

X

Rock testing on cores according to ASTM D5873 (Type L)

X

X

X

X

Hardness testing of paper rolls (Type L)

X

X

X

X

Compressive strength estimation; concrete: 10 to 70 N/mm2/ 1450 to 10152 psi (Type N)

X

X

X

X

Screening of concrete to identify coring locations (Type N)

X

X

X

X

Uniformity testing of concrete (Type N)

X

X

X

X

Fresh concrete strength estimation

X

X

X

X

Normal concrete strength estimation

X

X

X

High strength concrete strength estimation

X

X

X

X

Concrete uniformity testing

X

X

X

Papier

Type L

X

X

X

X

Béton

X

X

X

Géologie

X

X

X

Mesure d’uniformité

X

Estimation de la résistance in situ

Corrélation personnalisée avec la résistance à la compression

X

X

Mesure du béton de faible résistance (<5 Mpa)

X

X

X

Mesure de la qualité du mortier dans la maçonnerie en briques

X

X

X

X

Mesure de la roche

X

X

X

Bobines de papier de grande taille
L

X

X

X

X