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material properties Flashcards

(67 cards)

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1
Q

accelerator admixture

A

calcium chloride

speeds up setting time

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2
Q

air-entraining admixture

A

resin, fat or oil
resists freeze/thaw damage
increases workability
light-weight, non sturctural

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3
Q

retarder admixture

A

starch, sugar, acid

slows down setting time

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4
Q

waterproofing admixture

A

stearate compounds

decreased permeability

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5
Q

water-reducing admixture

A

organic compounds

reduce water content

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6
Q

workability agent admixture

A

powdered silica or lime

improves workability

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7
Q

Type M morar

A

highest compressive strength

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8
Q

Type S mortar

A

second-strongest in compression; also resists lateral forces so good in underground applications

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9
Q

Type N mortar

A

most common; medium strength

use in interior and reinforced exterior walls

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10
Q

Type O mortar

A

weakest

use for non-load-bearing and re-pointing - very workable

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11
Q

SW brick

A

severe weathering (cold climate)

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12
Q

MW brick

A

moderate weathering (temperate)

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13
Q

NW brick

A

negligible weathering (warm climate)

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14
Q

FBX brick

A

most perfect in dimension and uniformity of color

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15
Q

FBS brick

A

middle-tier - wide range of color and greater dimensional variation

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16
Q

FBA brick

A

least uniform in size and color

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17
Q

outdoor-appropriate mortar joints

A

weathered
concave
vee
flush

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18
Q

indoor-appropriate mortar joints

A

raked

stripped struck

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19
Q

metal finish: anodized

A

aluminum coated with protective oxide layer through an electrolytic process

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20
Q

metal finish: galvanizing

A

coating iron or steel with a protective layer of zinc by immersion in a molten bath

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21
Q

plainsawn wood

A

most common
highest yield
grain varies; distorts in various ways

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22
Q

quartersawn wood

A

finish application; little distortion

wears evenly

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23
Q

seasoned wood moisture content

A

19% or less

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24
Q

air dried wood moisture content

A

10-20%

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25
kiln dried wood moisture content
10%
26
exterior plywood
for permanently exposed locations
27
exposure 1 plywood
fully weatherproof glue but lower quality veneer than exterior grade structural sheathing/subfloor
28
exposure 2 plywood
use only where fully protected from weather
29
wood treatment: insects
creosote proper ventilation and good drainage pressure-treat (don't surface treat)
30
wood treatment: decay
keep dry and ventilated OR submerged | use decay-resistant species or pressure-treating
31
wood treatment: fire
``` chemical impregnation (cadmium phosphate) surface treatment (intumescent paint) ```
32
Type I cement
normal - most common
33
Type IA cement
normal, air-entraining
34
Type II cement
moderate resistance to sulfite attack - used in contact with water that contains sulfites)
35
Type IIA cement
moderate resistance to sulfites and air-entraining
36
Type III cement
high early strength
37
Type IIIA cement
high early strength | air entraining
38
Type IV cement
low heat of hydration (for massive structures)
39
Type V cement
high resistance to sulfite attack
40
super-plasticizer admixture
organic compounds | make flowable
41
fly ash admixture
increased strength, decreases permeability, reduces heat of curing, improves sulfite resistance
42
silica fume/micro silica admixture
finer than portland cement | high strength, low permeability
43
blast furnace slage admixture
byproduct of iron manufacture | improves workability, strength, less permeable, lower curing temperature, sulfite resistance
44
pozzolan admixture
reacts with calcium hydroxide - cementing
45
corrosion inhibitor admixture
reduce rebar rusting - use where deicing salt is applied
46
fibrous admixture
short glass or steel fibers - microreinforcing
47
freeze-protection admixture
allows curing at temperature as low as 20
48
extended set-control admixture
delay curing up to 7 days
49
annealed glass
cooled slowly | prevent locking in of thermal stress
50
tempered glass
reheated annealed glass - surface cooled fast, core more slowly resists thermal stress and bending/impact breaks into granules exterior, ceiling, impact
51
heat-strengthened glass
similar to tempered but weaker strong in bending, resists thermal stress and impact breaks more like annealed than like tempered
52
laminated glass
transpaent polyvinyl sandwiched between glass not as strong as annealed polyvinyl holds if glass breaks - skylights/high good sound barrier
53
security glass
bullet-proof laminated glass
54
fire-rated glass
resists passage of smoke, heat and flames for specified time after exposure tempered and 20 min rated
55
wired glass
wire mesh rolled into a sheet of hot glass holds together when broken fire rating of 45 min
56
patterned glass
hot glass rolled with a texture distorts image; mostly decorative may be tempered
57
fritted glass
surface imprinted with silk-screened ceramic paint that is dried and fired on
58
spandrel glass
opaque - used in curtain walls over structure made with full frit on interior tempered to resist thermal stress
59
tinted or reflective-coated glass
reduces glare and cuts solar gain tint is a chemical additive reflective is a metallic film
60
insulating glass
multiple panes with air gaps | acoustic control, insulation, and moisture control
61
low-e glass
thin metallic coating - view almost unobstructed; certain wavelengths reflected
62
metal finish: powder coating
resins/pigments electircaly charged and sprayed on
63
alkyd paint
synthetic resin - replaced oil varnish, paint and adhesive
64
float glass
annealed - heated and cooled slowly for strength | most common
65
heat-absorbing glass
tinted to absorb solar radiation - transmits less heat and glare to inside usually colored
66
safety glass
laminated glass in cars and skylights
67
bulletproof glass
laminated glass; 4+ layers with 3+layers plastic

bdcs (2 decks)

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