2. History
• SGM lab solutions an initiative of sigma test and research center which
was established in 2009 by technocrat educationist who have over 30
years
of
experience
in
the
area
of
education, administration, manufacturing and marketing.
• SGM lab solutions came on floor with an objective to provide excellence in
testing services, equipments, training, calibration, lab set up facility and
aimed at providing its clients technology that is conducive to fast changing
environment and backed by a group of professionals who have dedicated
its formative years in quality control across various industries.
3. • We offer a complete line of Rebound Hammers for the occasional user as
well as the engineering professional. All hammers are spring activated and
conform to ASTM C-805 as well as other European and Asian Standards.
All are made to the most exacting machine tolerances to provide the end
user with a consistent test every time.
• A Schmidt Hammer or a rebound hammer is a device to measure the
elastic properties or strength of concrete or rock, mainly surface hardness
and penetration resistance. Hammer test is done as per IS: 13311 (part 2) 1992 or ASTM C805/C805 M or ACI 228.
4. New Developments In the Rebound
Hammer
• A Rebound hammer is a tool that can test the compressive strength of
concrete. These tools are also referred to as rebound hammers due to the
way the mechanism operates. A typical design consists of a handheld
cylinder that contains a smaller, spring loaded rod. The strength of a
concrete structure can be determined by striking it with the metal rod and
then examining the rebound.
• The rebound hammer has had several changes over the years. Some of the
latest improvements have been to make the rebound hammer lighter; use
some of the aerospace higher strength metals; install computer chips to
calculate automatically the averages and standard deviations of the
readings. Although the rebound hammer has gone through several
changes and is an extremely useful nondestructive testing tool, the user
must recognize that the rebound hammer measures only surface hardness
of concrete. Engineers must determine how to use this information in
their investigation of the concrete structure.
