Training
ACI - Concrete Strength Technician Training
Concrete types and basic properties
(workability, setting time, water-cement ratio)
Sampling procedures: correct methods,
equipment, documentation
Specimen preparation: molding cylinders,
beams, cubes
Curing methods and handling of specimens
Compressive strength testing (cylinders, cubes)
Flexural strength testing (beams)
Testing machine use, calibration, and
maintenance
Data recording and report preparation per ACI
standards
Identifying discrepancies, retesting procedures
Safety: PPE, lab/field protocols
Quality control and compliance with ASTM/ACI
standards
Troubleshooting common errors and ensuring
reproducibility
,Procedures for capping enable Perpendicularity, Planeness
concrete cylinders and cores to
meet C617's practice requirements
for___ and___. ASTM C617
Standard Practice for Capping
Cylindrical Concrete Specimens
___ can be made of glass, machined Capping plates
metal, polished granite, or diabase.
(C617)
Sulfur caps can be formed against Metal, stone
___ or___ plates.
The working surface of a capping 0.05
plate shall not depart from plane
by more than___ mm.
Device used in conjunction with a Alignment device
capping plate to ensure
perpendicularity.
, Perpendicularity requirement of 0.5
the axis of a cylindrical specimen.
(degrees)
The element of a melting pot that Peripheral Heating
ensures against accidents during
reheating of cooled sulfur.
Temperature of the sulfur mortar 265-290 F
pot/materials.
Capping material to be used on Neat Portland Cement paste
freshly molded cylinders.
Remove this from the end of Oily or Waxy materials
cylinders before capping.
Materials that can be used to cap Neat Portland Cement, Gypsum Cement, Sulfur
hardened cement concrete
cylinders.
T/F Plaster of paris is an example False
of a high-strength plaster