Engineers worldwide use Original SCHMIDT
Concrete Test Hammers to assess concrete quality and strength
characteristics. Proceq manufactures the industry's widest range of hammer
types to fit virtually every in situ test application - including the
Original SCHMIDT Hammers type N and L, recording type NR and LR, digital
types ND and LD DIGI-SCHMIDT, as well as the specialty type SCHMIDT Pendulum
hammers P, PT, PM.
Accurately
measuring compressive strength - which directly determines the load-bearing
capacity and durability of concrete structures - is achieved by striking the
concrete at a defined energy, then measuring the hammer's rebound. The
rebound corresponds to the concrete's hardness. Using conversion tables, the
rebound value can be correlated to compressive strength.
This instrument enables engineers to measure the strength of existing
concrete structures in situ to control concrete quality and to detect weak
spots.
Features
Original SCHMIDT Swiss made hammers
Proven performance for over 50 years
Wide range available for almost any test application
The
Type N hammer is designed for testing concrete items 100mm (4") or more
in thickness, or concrete with a maximum particle size less than or equal to
32 mm (1.25").
AcThe Type NR hammer provides a record of test data. Rebound values are
recorded as a bar chart on a paper strip. One roll of paper strip documents
4'000 test impacts.
Both hammers are also used for the testing of massive rock.
Testing Standards: EN 12 504-2, ENV 206, DIN 1048 part 2. ASTM C805.
ASTM D5873 (Rock), D5873, JGJIT 23-2001 Part 202. JJG 817-1993
Type L/LR SCHMIDT Test Hammer
The Type L/LR hammer operates with significant lower impact energy, making
this hammer the ideal option for testing thin walled items with a thickness
between 50 to 100 mm (2" and 4") or for testing small components.
The Type L/LR is suitable for testing cast stone components which are
sensitive to impact. In rock mechanics, the Type L/LR hammers are commonly
used for classification testing of rock cores and brittle rock.
Testing Standards: Same as for N/NR type hammers
The
DIGI-SCHMIDT 2000 Concrete Test Hammer performs rapid nondestructive quality
testing. It provides automatic conversion of rebound values to the
concrete's compressive strength. Factors can be selected to adjust for
concrete age and specific test specimen differences, maintaining accurate
measurement over a wide range of test parameters.
DIGI-SCHMIDT Hammers - available in Type ND or Type LD configurations - are
ideally suited to quality assurance applications requiring many measurements
of mass produced components. Large scale building projects, which require
correlation of many measurements, also benefit from this electronic
technology.
Electronic technology automatically calculates median, mean values and
standard deviation. The carbonation of concrete near the surface can be
automatically considered in the calculations.
The graphic LCD 128 x 128 pixel display unit immediately displays the
rebound value. A non-volatile memory provides a maximum of 500 measurements
of ten values each. Integrated software prints the measured values and/or
transmits them to a PC via a RS 232 interface.
Measured values can be printed or plotted as bar charts, and the entire
measurement series can be transferred to a PC using the included
Windows-based ProVista software for subsequent evaluation.
Testing Standards: EEN 12504-2, ENV 206 ASTM C805, ASTM C805C
(Rock), JGJ/T23-2001, JJG 817-1993, both China
Features
Automatic conversion of rebound values to compressive strength
Automatic correction for carbonation depth
Internal data acquisition with data transfer to PC or printer direct
capabilities.
