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Watch a clip of our
first release.
Introducing
ConcreteTech, a brand new video training
series covering important concrete
technical matters, presented by veteran industry technical expert and acclaimed
instructor Gary Mullings.Gary
is noted for his depth of knowledge and warmth of delivery. Designed to be
presented as a part of formal or informal training programs, this series will
inform viewers on technical issues and procedures for testing ready
mixed concrete. Look for upcoming videos which will include discussions on
Sampling, Slump Procedures, Testing Concrete for Air Content,
Testing High Strength Concrete, Temperature, and many more.
Quality Assurance Testing Series
Volume #1
Preparation of 4"x8" Compression Test
Specimens
Watch a clip
4"x8" compressive strength specimens are allowed by ASTM C31.
They are faster and easier to prepare, and result in easier-to-handle eight
pound cylinders (as compared to the 30 pound cylinders produced by 6"x12"
specimens). And research shows that the 4"x8" specimens produce virtually
the same test results.
This information-packed, easy-to-follow 14-minute video,
details the steps and procedures that an ACI Grade I Field Testing Technicians
(or equivalent) should follow in preparing 4"x8" compressive strength specimens
in accordance with ASTM C31, including:
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Sampling:
Selecting a composite sample in accordance with ASTM C172
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Molding:
Proper molding, including consolidating by rodding or vibrating
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Curing:
Steps for both initial and final curing
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Identifying
and Reporting: Recording accurate testing information
 Proper preparation of compression testing specimens is a
vitally important part of a comprehensive quality assurance testing program.
Make sure your field testing technicians have the support they need to do
produce accurate results. Order this video today.
Order now in three convenient formats:
NRMCA Members: $35. Non-Members:
$140
Online Purchases8DVD.8VHS8Computer
CD8
Purchase by Fax
(PDF)
8Phone/Email
Orders/ Info:
Jacques Jenkins, 888-846-7622, x1165,
jjenkins@nrmca.org
8More
Publications
Gary Mullings,
NRMCA Senior Director of
Operations & Compliance, is a Certified
Concrete Technologist with 32 years of service to National Ready Mixed Concrete
Association. Gary serves as chairman of the Concrete Density Task Group for
American Standards of Testing Materials (ASTM) and is a member of Committee C-9
on concrete. He is also an active member of the American Concrete Institute, the
National Safety Council, and the American Trucking Association’s Maintenance
Council. Gary is a principal instructor for the NRMCA Short Course on Concrete
and Aggregates, the Environmental Course, the NRMCA Safety Course, Plant Manager
Certification Course and NRMCA’s Dispatcher Training Course, and has provided
instruction for thousands of students during his career. You can reach him at
240/485-1161 or via email at
gmullings@nrmca.org.
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