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P. 85
Page :
WORK INSTRUCTION
Edition :
Checking No.
CORING TEST
(Reference Standard: Effective Date:
CIVIL ENGINEERING ASTM D5361/D5361M – 16)
JKA/ DCC30112/ 2021 Amendment Date:
1.0 OBJECTIVE OF EXPERIMENT :
Core tests are generally performed to assess whether suspect concrete in a new
structure complies with strength-based acceptance criteria or not. In addition, it is
critically used to determine in-place concrete strengths in an existing structure for the
evaluation of structural capacity.
2.0 THEORY :
The standard test procedure is used for collecting samples of asphalt concrete by
coring methods. Samples of asphalt concrete collected using the coring method may
be used to evaluate various characteristics of an asphalt concrete pavement for
construction quality control testing, quality assurance testing and product
acceptance testing. Core samples may also be used for research testing purposes.
The standard core sample diameter for purposes of this test procedure will be 101.6 mm
or 152.4 mm. Generally, the maximum thickness of asphalt concrete pavement to be
sampled will be 250 mm.
3.0 EQUIPMENT
1. Portable Drilling Equipment
2. Core Barrels
3. Core Retrieval Tool
4. Marshall hand held compaction hammer
5. Container
Higway Engineering Laboratory page 72
