Schmidt rebound hammers for concrete strength and rock testing

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 first and most widely used instrument for non-destructive estimation of concrete strength properties, asphalt, mortar, rock and paper. Proceq rebound hammers are available in models with different impact energies, each designed for a specific test application. The SilverSchmidt is the latest generation of rebound hammer, combining the ground breaking features of the Original Schmidt with the best of today’s technology. It is the first integrated rebound hammer featuring true rebound value and unmatched repeatability.

Models

Original Schmidt Live

SilverSchmidt

Original Schmidt

Schmidt OS-120

RockSchmidt

Description The Original Schmidt Live is a uniquely versatile hammer that can be used as stand-alone analog hammer, a stand-alone digital hammer, together with a Bluetooth printer and finally as the world’s most advanced R-value concrete test hammer with the Schmidt Live app The SilverSchmidt is a unique integrated concrete test hammer featuring true rebound value calculated from the quotient of the impact velocity and rebound velocity to provide maximum accuracy. The classic Original Schmidt hammer that became the basis of every major rebound hammer testing standard worldwide. 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. 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.
Your Benefits

Comprehensive Apple iOS app for measuring, reporting and analysis

Web reporting tool for instant offsite data availability and synchronizing

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 standards compatibility and durability

Automatic calcuation of rebound value according to international standards

Best in class correlation with least dispersion for specific concrete mixes

Extremely durable with long service intervals when compared with classical hammer

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

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

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) 2.207 Nm (N), 0.735 Nm (L) 2.207 Nm (N), 0.735 Nm (L)  0.833 Nm  2.207 Nm (N), 0.735 Nm (L)
10 to 70 N/mm2 (1’450 to 10’152 psi)
  • 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) 10 to 100 N/mm2 (1’450 to 14’500 psi)
10 to 70 N/mm2 (1’450 to 10’152 psi)  1 to 5 N/mm2 (145 to 725 psi)  20 to 150 MPaUnconfirmed ( or Uniaxial ) Compressive Strength (UCS)
Applications
Paper Type L x Type L x x
Concrete  √ x
Geology  √ x x
Uniformity Testing  √ x
In-situ strength estimation  √
Custom correlation to compressive strength  √ x x
Low strength (<5 Mpa) concrete testing x x x x
Quality testing of mortar in brickwork x x x x
Rock testing  √ x  √ x
Large paper rolls  √  x  L x x
Additional Applications
Features
Instrument Firmware
  • Predefined curves
  • Custom curves
  • Form factor correction
  • Impact angle correction
  • Carbonation correction
  • User defined and Standardized statistics
  • Single button programming of settings
  • Custom curves
  • Correlation to UCS
  • Correlation to E-modulus
  • Weathering according to ISRM
  • Rebound according to ASTM and ISRM
  • Single button programming of settings
PC Software Hammerlink for rapid uniformity testing with the summary view, user defined conversion curves (polynomial and exponential), user defined statistical methods and export to third party software (PC N and PC L versions only) RockLink for data assessment and export to third party software
Display Any compatible Apple iOS device Integrated digital display Mechanical display Mechanical display Integrated digital display
Memory 2,000 measurement series 400 series of 10 measurements (PC N and PC L versions only) 400 series of 10 measurements
Connections USB interfere to PC USB interfere to PC
Measurements
  • Automatically detects and corrects for impact angle
  • Displays the series on-screen as you work
  • Series validity checked automatically
  • Review an entire series
  • Delete impacts
  • Test regions
  • Select units, form factor and correlation curves
  • Create your own custom curves
  • Create custom curves databases for your own mixes
Standardization
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
  • EN 12504-2
  • EN 13791
  • ASTM C 805
  • ГОСТ 22690
  • EN 12504-2
  • EN 13791
  • ASTM C 805
  • JGJ/T 23
  • JIS A 1155
  • ISO/DIS 8045
  • ASTM D 5873 (Rock)
  • ГОСТ 22690
  • EN 12504-2
  • EN 13791
  • ASTM C 805
  • JGJ/T 23
  • JIS A 1155
  • ISO/DIS 8045
  • ASTM D 5873 (Rock)
  • ASTM D 5873 (Rock)
Guidelines
  • ACI 228.1R
  • ACI 228.1R
  • ACI 228.1R
  • 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.
Accessories
Measurement Accessories
  • Site Anvil (340 01 300)
  • Testing anvil Euro (310 09 040)
 Mushroom plunger (341 90 005)  Registration paper Model NR/LR (5 rolls/pack) (310 99 072)
Verification Tools
  • SilverSchmidt Premium Calibration Certificate (341 89 000)
  • SilverSchmidt Testing anvil (341 10 400)
  • SilverSchmidt Anvil Premium Calibration Certificate (341 89 001)
  • Original Schmidt Premium Calibration Certificate (310 89 000)
  • Testing anvil Euro “N/NR/ND/L/LR/LD” (310 09 040)
  • Euro Anvil Premium Calibration Certificate (310 89 002)
Testing anvil „P/PT/PM“ (310 10 000)
  • SilverSchmidt Testing anvil (341 10 400)
  • SilverSchmidt Anvil Premium Calibration Certificate (341 89 001)