Concrete Flashcards
one of the most widely used construction
materials due to its versatility, durability, and
cost-effectiveness
Concrete
Properties of conc
Compressive strength
Tensile
Workability
Durability
The quintessential compression
test entails subjecting cylindrical or cubical concrete
specimens to escalating loads until they succumb to
failure,
thereby
delineating
the
concrete’s
compressive strength profile.
Compression test
Crucial for assessing concrete’s
capacity to withstand bending forces, the flexural test
serves as a litmus test for the structural integrity of
beams, slabs, and other load-bearing elements
Flexural test
By exerting a splitting force
upon cylindrical specimens, the splitting tensile test
elucidates
concrete’s
tensile
strength
profile,
elucidating its resistance to tensile stresses
Splitting tensile test
Embracing an
array of non-invasive techniques such as ultrasonic
testing, rebound hammer assessments, and pulse
velocity analyses, NDT furnishes invaluable insights
into concrete properties sans jeopardizing structural
integrity.
Non destructive testing
A regimen of systematic testing
for constituent materials encompassing cement,
aggregates, and water ensues compliance with
meticulously crafted mix design specifications and
exacting quality standards.
Material testing
Stringent scrutiny of
concrete batching plants is imperative to validate
adherence to prescribed mixing protocols, equipment
calibration, and meticulous quality control measures.
Batch plant inspection
A panoply of on-site assessments
ranging from slump tests to air content analyses and
temperature monitoring is indispensable to safeguard
the consistency, integrity, and quality of concrete
during the placement phase
On site testing
The judicious deployment
of optimal curing methodologies, be it through
meticulous moist curing or efficacious curing
compounds, constitutes a linchpin in nurturing
concrete to attain its desired strength, resilience, and
durability
Curing and protection
Major ingredients of conc
a. Cement
c. Coarse aggregates
b. Fine aggregate
d. Water
Conc in plastic stage
Green conc
Properties of green conc
- Workability
- Bleeding
- Segregation
- Harshness
More tests on conc
● Slump Test
● Compaction Factor Test
● Crushing Strength Test
construction material consisting of wire
meshes and cement mortar
Ferro cement
a homogeneous combination of
Portland cement, cement-silica, cement-pozzolana, limepozzolana; lime-silica pastes with having of identical cell
structure obtained from gas-forming chemicals or foaming
agents at measured levels.
Cellular conc
It is made up of
cement, mortar, and discrete, short fibers distributed in a
uniform manner throughout the composite material.
Finer reinforced conc
consists of brick
masonry which incorporates steel reinforcement embedded in
mortar or grout.
Reinforced brick conc
Steel rods
(known as rebar), wires, or mesh are frequently introduced
into concrete to provide improvement in resisting tensile and
bending forces.
Reinforced cement conc
concrete is compacted by ramming,
tamping, spading or by slicing with tools.
Hand compaction
compacted by using high
frequency vibrators
Compaction by vibrators
