Durham Geo
Slope Indicator
2175 West Park Court
Stone Mountain, GA
USA 30087
Tel 770-465-7557
Fax 770-465-7447
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Plastic Concrete Tests
Slump Test
 Slump
Testing determines the consistency of fresh concrete. It may be used
at the pour site or at the laboratory. The Slump Cone is filled with
3 layers of fresh concrete, each tamped to remove voids. The concrete
is leveled off with the top of the Cone. On removing the cone, the
slump is measured. The Slump Test can be used with fresh plastic concrete
with an aggregate size of 2 inches (50 mm) or smaller. Applicable
Standards: ASTM C 143, C 192 AASHTO T-23, T-119, T-126. |
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K-Slump Test
 The
K-Slump Tester rapidly indicates the water content, workability and
standard slump of fresh concrete. The device has a pointed end for
easy insertion into fresh concrete and a disc that controls the depth
of penetration. When inserted, wet concrete enters the shaft through
side openings and raises a floating plunger to give an estimate of
concrete slump. The level of concrete retained in the probe after
it has been withdrawn provides an index of water content and the degree
of compaction. It should only be used when at least 6 in. (15 cm)
of concrete surrounds the tester. Operating instructions and a correlation
chart are included. |
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Concrete Pocket Penetrometer
 The
Concrete Pocket Penetrometer is used to determine the "initial set"
of concrete mortar as described in ASTM C-403. Operation is based
on the spring-reaction principle. In use, the penetrometer tip is
pushed into the mortar to a depth of one inch (2.54 cm), as indicated
on the shaft, at periodic intervals. The Penetrometer has a precise
tip area of 0.05 in2. (32 mm2) and a calibrated range of 0 -700
psi (0 - 4.8 MPa), with the resistance in psi shown on the scale.
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