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CMT > Finishes > Flashcards

Finishes Flashcards

1
Q

is a mortar consisting of cement, sand, and water

A

Stucco

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2
Q

___ is often added to make the mortar easier to work.

A

Hydrated lime

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3
Q

Before applying the stucco or cement plaster, the concrete (or masonry) surface should be ___ to ensure good bonding.

A

roughened

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4
Q

Average thickness of the scratch coat is ___

A

3/8

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5
Q

Thickness of the finish coat is ___ minimum and rarely exceeds ___ except for finishes requiring rough texture.

A

1/8” ; 1/4”

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6
Q

This consists of grinding down the surface of the concrete a day or two after it is poured, using a brick of carborundum, emery or soft natural stone.

A

Rubbed Finish

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7
Q

With the rubbing, which is done with a ___ motion, a thin grout of cement and sand is applied to the surface and well rubbed in to fill surface imperfections, and the work afterward washed down with clean water.

A

circular

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8
Q

If fine sand is used instead of a grout, the method is called a ___ finish.

A

sand-float

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9
Q

This type of finish is obtained by scrubbing or brushing the concrete surface with fiber or wire brushes and water to remove the surface film or mortar, leaving the coarse aggregate exposed.

A

Brushed Finish

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10
Q

This should be done while the concrete surface is still ___ and just as soon as it is possible to do so without removing particles of the aggregate.

A

green

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11
Q

The appearance of a brushed finish can be improved by washing with a ___ solution of acid applied with a brush.

A

diluted

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12
Q

is the most popular method used in tooling concrete surfaces

A

Bush hammering

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13
Q

The concrete should be about ___ old.

A

2 months

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14
Q

Only ___ aggregate should be used in the facing material, as it is hard to dress and obtain uniform results where large angular stones are encountered.

A

small-sized

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15
Q

Tooling cannot ordinarily be performed satisfactorily on ___, as the pebbles will be dislodged before being chipped.

A

gravel concrete

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16
Q

produces a granulated finish somewhat similar to sandstone but not so uniform, because the aggregates are likely to be brought out irregularly.

A

Sand blasting

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17
Q

The concrete should be thoroughly ___ before sand-blasting.

A

hardened

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18
Q

A ___ nozzle may be used, but under ordinary conditions ___ or even ___ have been found to give good results.

A

3/8” ; 1/4” ; 1/8”

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19
Q

The best results are obtained on a thoroughly hardened concrete surfaces at least a month old, and for such work a nozzle pressure of ___.

A

from 50-80 lbs

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20
Q

The color is obtained from ___ and not by adding coloring material to the mixture.

A

exposed aggregate

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21
Q

After the concrete aggregate is forced below the surface, the surface is leveled with a straight wood screed, and given a wood float finish.

A

Steel Trowelled Finish

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22
Q

When the concrete is still green but surface water is gone, the surface is leveled with a ___.

A

straight wood screed

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23
Q

This consists of a topping with a mixture of 1 part of cement, 1 part of sand and 1 part of finely crushed stone.

A

Granolithic Finish

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24
Q

___ may also be part of the aggregate to produce an enduring and non-slip surface.

A

Finely ground corundum

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25
Q

___ is a mixture of cement, marble chip aggregates and water laid as topping or as a wall finish, and ground to a fine, smooth surface.

A

Terrazzo

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26
Q

For non-slip surfaces, ___ are added to the mixture.

A

abrasive granules

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27
Q

The ___ shall consist of 200 lbs. of marble chip aggregate to 1 bag (94 lb.) of cement.

A

terrazzo topping

28
Q

For non-slip heavy duty floors the mixture shall consist of ___ of marble chip aggregate and ___ of abrasive granules to ___ of cement.

A

150 lbs. ; 50 lbs. ; 1 bag

29
Q

For heavy-duty non-slip topping a proportion of ___ marble granules to ___ abrasive must show.

A

three ; one

30
Q

For light-duty non-slip topping, where abrasive is sprinkled on the finish, a proportion of ___ marble to ___ abrasive granule must show.

A

four ; one

31
Q

Minimum thickness of terrazzo topping is ___.

A

5/8”

32
Q

___ is manufactured by pressing in moulds a plastic mixture of cement and sand.

A

Cement tile

33
Q

Surface color of the tile is achieved by the addition of ___ colors.

A

mineral oxide

34
Q

Thickness of cement tile is ___.

A

25 mm (1”)

35
Q

When installing cement tile, the top of the base slab shall be left ___ below the finish floor.

A

50 mm (2”)

36
Q

___ are small surfacing units made from clay or mixture of clay with other ceramic materials and fired according various processes.

A

Ceramic tile

37
Q

Tiles differ principally in:

A
  1. composition of the body
  2. surface finish (glazed/unglazed)
  3. process of manufacture
  4. degree of vitrification
38
Q

usually clays having high bonding power and some fluxing ability

A

the plastic

39
Q

___ which reduces shrinkage in drying and firing and imparts to the body a certain rigidity which prevents deformation under heat

A

the filler

40
Q

___ which melts under intense heat and fuses the heat resisting elements into a solid mass

A

the flux or solvent

41
Q

The most widely used flux in floor and wall tiles is the ___.

A

minimal feldspar

42
Q

___ are composed of the same ingredients throughout and derive their color and texture from the materials of which the body is made.

A

Unglazed tiles

43
Q

___ have a glassy surface of ceramic materials fused upon their face to give them a decorative appearance and to make the surface impervious to moisture.

A

Glazed tiles

44
Q

have a highly polished surface and reflect an image clearly

A

bright glazes

45
Q

do not clearly reflect an image or are entirely without sheen

A

matte glazes

46
Q

___ are shaped in steel dies by applying heavy pressure to the damp ceramic mix while it is in finely pulverized form.

A

Dust-pressed tiles

47
Q

The ___ gives greater mechanical precision and a more regular appearance to the tiles than other methods.

A

dust-press process

48
Q

___ are shaped from clay rendered plastic by mixing with sufficient water.

A

Plastic-made tiles

49
Q

Most types of tile made by the ___ vary slightly from the true geometric forms and therefore have a more hand=made appearance than to dust-pressed tiles.

A

plastic process

50
Q

___ is a measure of the tile’s density and relative absorption which depends partly on the tile’s composition and partly on the degree of burning.

A

Vitrification

51
Q

___ have a degree of density that permits moisture absorption of more than 7% of the weight of the tile but does not prevent the tile from having a high degree of strength.

A

Nonvitreous tiles

52
Q

___ have a degree of density that limits moisture absorption to from 3 to 7% of the weight of the tile.

A

Semivitreous tiles

53
Q

___ have a moisture absorption of less than 3% and a body density which prevents any penetration of dirt that cannot be easily removed.

A

Vitreous tiles

54
Q

___ are the hardest. Their moisture absorption is negligible and they are readily cleansed of stains and dirt.

A

Impervious tiles

55
Q

___ are non-vitreous product made by the dust-press-process.

A

Glazed interior tiles

56
Q

___ are tiles less than 6 sq. in. in facial area, preponderantly unglazed, and having fully vitrified or fairly dense bodies.

A

Ceramic Mosaic Tiles

57
Q

To facilitate installation, ceramic mosaic tiles are usually mounted at the factory on sheets of paper about ___ in area.

A

2 sq. ft.

58
Q

___ are unglazed tiles made from natural clays or shales by the plastic method.

A

Quarry tiles

59
Q

___ are standard size unglazed tiles resembling ceramic mosaic tiles in composition and physical characteristics but usually having facial area of 6 sq. in. or more.

A

Pavers

60
Q

All pavers are ___ and are especially suitable for heavy floor service.

A

weatherproof

61
Q

Resilient flooring is manufactured as ___ or ___

A

tile ; sheet

62
Q

This consists of thoroughly bonded composition of thermoplastic binder, asbestos and other fibers, inert filler materials and inert color pigments, formed under pressure while hot and cut to size.

A

Asphalt Tile & Sheet Finish

63
Q

Asphalt tile is usually made in ___ squares and less commonly in ___ sqaures.

A

9” ; 12”

64
Q

Usual thickness of rectangular borders are ___ and ___

A

1/8” ‘ 3/16”

65
Q
A

CMT (6 decks)

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