Lesson 2 - Concrete Flashcards
(31 cards)
design to remove a cylinder of
material, much like a hole saw.
Core drill
to thrust out; force or press out.
Extruder
used to determine the strength and
slope stability of rock size
Portable rock shear box assembly
used to test the effects of specified
environmental conditions.
Climatic chamber
use for splitting breaking rock.
Geologic hammer
used to perform compression test on concrete beam specimens.
Compression testing machine
used to perform flexural tests on
concrete beam specimen
Flexural testing machine
used to determine the strain and
deformation – characteristics of
concrete specimens.
Compressometer
suitable for field mixes of medium
strength concrete
Drum type mixer
for the determination of the
consistency, the medium and high
workability of fresh concrete.
Slump cone
method is based on the same principle of the simple slump cone test method, for the determination of the workability of concrete, but it has the advantage of a mechanized action after removing the slump cone, the concrete undergoes a vibration to determine its slump. A space disk set in contact with the upper surface of the wet concrete,
gives the operator the opportunity to determine when the compaction is
complete. The operator will count the time necessary to complete the
requested vibration, so as to get an
indication of the workability of the
concrete.
Vebe Consistometer
designed to undertake a more
precise and sensitive test procedure
than the simple slump test
Compacting factor apparatus
to determine the degree of
compaction and the workability of
fresh concrete. Used for in-site
measurements of inside test molds.
Test results can be correlated against the slump values.
K-Slump tester
used to determine the workability of
concrete.
Flow table
it is used to determine the workability of fresh concrete. The ball is lowered into the concrete and the
penetration measured. It can be
used on site or in laboratory
Kelly ball apparatus
(also known as plastometer) is designed to
test concrete for dynamic workability.
Concrete workability meter
used for quick and easy
measurement of the plasticity of
mixtures especially concrete, and so
to detect rapidly any excess of water. The measuring system is related to the shear strength applied by a three blade heads to the mixture under
test.
Plasticity meter
used to determine the setting time of the mortar fraction in concrete mixes with the slump greater than zero, by
testing mortar sieved from mix.
Concrete penetrometer
it records directly the percentage of
air enclosed in freshly mixed concrete by operating according to the air pressure principle.
Air entertainment meter
used to determine the weight per
cubic meter of freshly mixed and
compacted concrete.
Unit weight measure
used to separate the various
elements of the fresh concrete such
as cement, sand, aggregates.
Joisel apparatus
used for the determination of cement content in fresh concrete , coarse
and fine aggregate, fly ash and
GGBF slag content can also be
determined.
RAM - Rapid analysis machine
used in molding
Concrete moulds
used for the compaction of concrete
specimens in the laboratory.
Vibrating tables
