CCIL Concrete Testing Technician
Certification - A23.2-3C UPDATED Exam
Questions and CORRECT Answers
A23.2-3C
1. Scope - CORRECT ANSWER - This Test Method specifies the procedure for making
and curing compression test cylinders and flexural test beams from samples of plastic concrete.
Procedures for both field and laboratory work are included.
ACI - CORRECT ANSWER - American Concrete Institute
A23.2-3C
3. Summary - CORRECT ANSWER - This Test Method is used to cast compressive or
flexural strength test specimens and cure them on site prior to timely transportation to the
laboratory for subsequent curing and strength testing.
A23.2-3C
4. Significance and use - CORRECT ANSWER - This Test Method specifies the standard
procedure for making, curing, protecting, and transporting concrete specimens.
4. Significance and use
If the specimens are made and standard cured as specified in this Test Method, the resulting
strength data, when the specimens are tested in accordance with the relevant test method, may be
used for the following purposes: - CORRECT ANSWER - 1. acceptance testing for
specified strength;
2. checking adequacy of mixture proportions for strength; and
3. quality control
4. Significance and use
If the specimens are made and field-cured as specified in this Test Method, the resulting strength
data, when the specimens are tested in accordance with the relevant Test Method, may be used
, for the following purposes: - CORRECT ANSWER - 1. consideration of whether the
structure is able to be put into service;
2. comparison with test results of standard cured specimens or with test results from various in
place test methods;
3. adequacy of curing and protection of concrete in the concrete structure; and
4. formwork or shoring removal time requirements.
5. Apparatus
5.1 Moulds for compression test specimens: - CORRECT ANSWER - Use cylindrical
moulds, meeting the requirements of CSA A23.2-1D, having nonabsorbent surfaces and
sufficiently rigid to hold their shape during the moulding of the test specimens.
Do not use cardboard moulds for specified concrete strengths greater than 35 MPa.
Lightly coat reusable moulds with mineral oil or other suitable non-reactive form release
material before use.
5.3 Tamping rod
For 100 mm x 200 mm cylinders, - CORRECT ANSWER - se a round straight steel
tamping rod 10 +/- 1 mm in diameter and between 450 mm and 600 mm in length, having at
least one end rounded to a hemispherical tip.
5.3 Tamping rod
For cylinders 150 mm in diameter or greater and for rectangular moulds, - CORRECT
ANSWER - use a round straight steel tamping rod 16 +/- 1 mm in diameter and not less
than 450 mm nor more than 600 mm in length, having at least one end rounded to a
hemispherical tip.
5.4.1 Internal Vibrators
Internal vibrators shall have...
The frequency of vibration shall be... - CORRECT ANSWER - ... rigid or flexible shafts
and preferably powered by electric motors.
... 120 Hz or greater.
Certification - A23.2-3C UPDATED Exam
Questions and CORRECT Answers
A23.2-3C
1. Scope - CORRECT ANSWER - This Test Method specifies the procedure for making
and curing compression test cylinders and flexural test beams from samples of plastic concrete.
Procedures for both field and laboratory work are included.
ACI - CORRECT ANSWER - American Concrete Institute
A23.2-3C
3. Summary - CORRECT ANSWER - This Test Method is used to cast compressive or
flexural strength test specimens and cure them on site prior to timely transportation to the
laboratory for subsequent curing and strength testing.
A23.2-3C
4. Significance and use - CORRECT ANSWER - This Test Method specifies the standard
procedure for making, curing, protecting, and transporting concrete specimens.
4. Significance and use
If the specimens are made and standard cured as specified in this Test Method, the resulting
strength data, when the specimens are tested in accordance with the relevant test method, may be
used for the following purposes: - CORRECT ANSWER - 1. acceptance testing for
specified strength;
2. checking adequacy of mixture proportions for strength; and
3. quality control
4. Significance and use
If the specimens are made and field-cured as specified in this Test Method, the resulting strength
data, when the specimens are tested in accordance with the relevant Test Method, may be used
, for the following purposes: - CORRECT ANSWER - 1. consideration of whether the
structure is able to be put into service;
2. comparison with test results of standard cured specimens or with test results from various in
place test methods;
3. adequacy of curing and protection of concrete in the concrete structure; and
4. formwork or shoring removal time requirements.
5. Apparatus
5.1 Moulds for compression test specimens: - CORRECT ANSWER - Use cylindrical
moulds, meeting the requirements of CSA A23.2-1D, having nonabsorbent surfaces and
sufficiently rigid to hold their shape during the moulding of the test specimens.
Do not use cardboard moulds for specified concrete strengths greater than 35 MPa.
Lightly coat reusable moulds with mineral oil or other suitable non-reactive form release
material before use.
5.3 Tamping rod
For 100 mm x 200 mm cylinders, - CORRECT ANSWER - se a round straight steel
tamping rod 10 +/- 1 mm in diameter and between 450 mm and 600 mm in length, having at
least one end rounded to a hemispherical tip.
5.3 Tamping rod
For cylinders 150 mm in diameter or greater and for rectangular moulds, - CORRECT
ANSWER - use a round straight steel tamping rod 16 +/- 1 mm in diameter and not less
than 450 mm nor more than 600 mm in length, having at least one end rounded to a
hemispherical tip.
5.4.1 Internal Vibrators
Internal vibrators shall have...
The frequency of vibration shall be... - CORRECT ANSWER - ... rigid or flexible shafts
and preferably powered by electric motors.
... 120 Hz or greater.
