WEEK5 Flashcards

1
Q

Concrete

A

coarse aggregates, fine aggregates (sand), cement, water, admixture

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2
Q

Portland
cement

A

Commonly used type
of cement for production of
concrete.

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3
Q

Curing: heat given off (heat
of hydration).

A

Achieved in
28 days but continues to
grow stronger as curing
progresses on

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4
Q

Cement

A

most important
building materials, is a binding
agent that sets and hardens to
adhere to building units such as
stones, bricks, tiles, etc.

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5
Q

Composition of cement

A

Limestone, sand or clay, bauxite

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6
Q

Portland

A

pulverizing clinker and calcium sulphate

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7
Q

portland type 1

A

full strength in 28
days without additives

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8
Q

portland type 2

A

moderate heat emitting;
used for large concrete pours where
less heat is desired during curing
period

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9
Q

portland 3

A

high early strength which
achieves earlier than Type 1

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10
Q

portland 4

A

low hear cement like type
2 and releases the least heat during
curing process

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11
Q

portland 5

A

most expensive, sulphate
resisting

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12
Q

Pozzoland

A

mixture of Portland
and exact amounts of natural
and artificial pozzolanic
materials (ex. Volcanic tuff,
shales, clay, ash, slag)

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13
Q

Pozzoland type P

A

high initial
strength before 28 days is not
required; this type however, like
Portland, still meets desired
compressive strength after 28 days

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14
Q

Pozzoland 1P

A

additives can be added to
achieve optimal compressive and
tensile strength before the 28-day
period

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15
Q

Tagalog of Cast in place

A

Buhos

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16
Q

Buhos function

A

Poured directly on site
to provide unlimited
sculptural quality

17
Q

Slow process since
formwork needs to be
constructed on site too

A

Cast in place

18
Q

Made at factory before
transport to job site

A

Pre-cast concrete

19
Q

No formworks to fabricate
and removed after

A

Pre-cast concrete

20
Q

Can be erected in poor
weather, without waiting
for concrete curing and Transport to site maybe limiting

A

Pre-cast concrete

21
Q

Best for repetitive and
consistent components of
the structure

A

Pre-cast concrete

22
Q

Cellulose fibers, Portland cement, Silica, Sand, Water, Admixture

A

Fiber cement concrete

23
Q

External and internal walling
Cladding
Fascia board
Tile or plank flooring
Ceiling and eaves

A

Fiber cement concrete

24
Q
  1. Can cause shrinkage and
    discoloration during curing
  2. Can corrode imbedded
    metals like steel bars
A

Fiber cement concrete

25
Q
  1. Increases workability by
    protecting it from
    freezing
  2. Lightweight and non-
    structural
  3. Reduces strength of
    mixture
A

Air-entraining

26
Q
  1. to cure/harden more
    quickly, reducing
    construction time
  2. Allows formworks to be
    removed sooner
A

Accelerating

27
Q

Slows the hardening or curing time

A

Retarding