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CPI FINALS > PORTLAND CEMENT > Flashcards

PORTLAND CEMENT Flashcards

1
Q

is a type of cement that is used as the binding agent in concrete.

A

PORTLAND CEMENT

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2
Q

It is made
by heating limestone and clay to high temperatures in a kiln.

A

PORTLAND CEMENT

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3
Q

Portland cement was invented
in ______ by Englishman +______ and patented in ___The name comes from its
similarity to the stone quarried on the Isle of _______

A

1824
Joseph Aspdin
1825.
Portland, Dorset, England.

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4
Q

is one of the most widely used high-carbon cement in use today
because it has a large amount of silica

A

PORTLAND CEMENT

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5
Q

IN THE PORTLAND CEMENT, WHAT PERCENT DOES SILICA MAKES UP

A

13%

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6
Q

Portland
cement’s HIGH heat of hydration is a major reason why it is so widely used.

A

FALSE

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7
Q

helps to make Portland cement highly workable allowing it to be poured into
forms such as concrete and tile Portland Cement.

A

SILICA

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8
Q

IT IS WHEN Joseph Aspdin patented an
artificial cement by
calcination of limestone.

A

1824

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9
Q

WHEN DID Aspdin’s cement was
improved by his son
William, by vigorous
heating and using better
grinding equipment to
handle the hard clinker.

A

1843

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10
Q

In 1875 portland cement was produced by what company

A

Coplay
Cement Company of David
Saylor in Pennsylvania.

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11
Q

Production of portland cement
reached

A

400,000
tons

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12
Q

The
limestone version of PC is called

A

caliche

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13
Q

The clay version of PC is called

A

portland

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14
Q

The raw material that is commonly
used in the manufacturing of
portland cement mainly consists of

A

lime
silica
alumina
iron oxide

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15
Q

portland cement that is rich in calcium , such as
limestone, chalk,

A

calcareous

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16
Q

portland cement that is rich in silica , such as
clay

A

(argillaceous)

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17
Q

a large amount of cement was
made from argillaceous limestone,
known as

A

cement rock

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18
Q

Abbreviation for CO2 clinker compound

A

C’

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19
Q

Abbreviation for SO3

A

S^

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20
Q

Usual products for general construction.

A

TYPE 1

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21
Q

TYPES OF TYPE 1 PC

A

White
oil-well
quick-setting

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22
Q

contains less ferric oxide

A

white type 1

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23
Q

Use where moderate heat of hydration is required or for general
concrete construction exposed of moderate sulfate action.

A

TYPE 2

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24
Q

The
heat evolved from these cements IN TYPE 2 should not exceed ________ AND ____-
1/g after __ AND ___ days respectively

A

295 and 335
7 and 28

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25
Q

Made from raw materials with a lime- to-silica ratio higher than
that of Type I cement and are ground finer than Type I cements.

A

tYPE 3 hes

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26
Q

They contain a higher proportion of tricalcium silicate (CS) than
regular portland cements.

A

type 3

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27
Q

Roads
constructed from HES cement can be put into service sooner than
roads constructed from regular cement.t

A

true

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28
Q

contain a lower percentage of tricalcium silicate (C3S)and
tricalcium aluminate (C3A), thus lowering the heat evolution.

A

type 4

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29
Q

composition or processing resist sulfates better than other four
types. It is used when high sulfate resistance is required.

A

type 5-sulfate resisting pc

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30
Q

a special cement which has air bubbles introduced in the
cement or concrete that provides the space for expansion of
minute droplets of waters in the concrete due to freezing and
thawing and protects from cracks and damage of concrete

A

air entrainment

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31
Q

has the highest C3S

A

Type 3

32
Q

a material which is not cementitious in itself but
becomes admixture with lime. It is with the
same strength with the Portland cement. Its
advantage is that it resists the corrosive action
of saline solutions and seawater much better.

A

pozzolans

33
Q

manufactured by fusing a mixture of limestone
and bauxite. It is characterized by a very rapid
rate of development of strength and superior
resistance to seawater and sulfate-bearing
water.

A

high alumina cements

34
Q

silica-filled, chemically setting silicate cements
withstand all concen- trations of inorganic acids
except hydrofluoric. They are not suitable at pH

values above or in the presence of crystal-
forming systems.

A

silicate cements

35
Q

homogeneous plasticized filled sulfur ingots
possessing low coefficients of expansion. Sulfur
cements are resistant to nonoxidizing acids and
salts but should not be used in the presence of
alkalies, oils, greases, or solvents.

A

sulfur cements

36
Q

usually contain
no portland cement.

A

polymer concrete

37
Q

discovered by the French chemist Sorel and
sometimes called Sorel’s cement,

A

magnesium oxychloride cement

38
Q

is the cheapest, most widely used alkali in
the world.

A

lime

39
Q

usually gray, but it may also be white, yellow or
brown.

A

lime

40
Q

a soft rock and is easily scratched.

A

lime

41
Q

a lime composed principally of
calcium carbonate

A

calcite

42
Q

a lime composed principally of double carbonate of calcium and magnesium

A

dolomite

43
Q

It is commonly composed of tiny fossils, shell
fragments and other fossilized debris.

A

lime

44
Q

colonial america used a _____ which is built of ordinary brick or masonry in the side of a hill,
with a coal or woodfire at the bottom and firing time of 72 hours.

A

dugout kilns

45
Q

is the 5th most abundant element in the
Earth’s crust

A

Calcium

46
Q

forms 20% of the
world’s sedimentary rock.

A

limestone or chalk

47
Q

The Romans used ____________
mixtures in many construction projects.

A

hydraulic lime and lime pozzolan

48
Q

referred to the use of lime for bleaching linen.

A

xenophon

49
Q

Mediterranean pips were familiar with lime
as a

A

paint

50
Q

Today, lime products are being used to restore
historical buildings back to their former glory, as well
as for constructing new build properties.

A

true

51
Q

may be used for medicinal
purposes, insecticides, plant and animal
food, gas absorption, precipitation,
dehydration, and causticizing.

A

lime

52
Q

It serves as a
basic raw material in the production of
calcium salts and for improving the quality
of certain soils.

A

lime

53
Q

in chem usage ______ preferred as a starting material because of the high-
calcium lime that results.

A

pure limestone

54
Q

CaCO3 >< CaO+CO2

A

Calcination

55
Q

CaO+H2O.Ca(OH)2

A

Hydration

56
Q

two types of kiln used to produce lime

A

rotary kiln
vertical kiln

57
Q

a widely used industrial chemical. As a
marble chips, it is sold in many sizes as a
filler for artificial ston, for the neutralization
of acids, and for chicken grit. Marble dust is
employed in abrasives and in soaps.

A

calcium carbonate

58
Q

Use as a
depilatory in
the tanning
industry and
cosmetics.

A

calcium sulfide

59
Q

to lay dust on
highways and
to melt ice and
snow in winter

A

halide salts

60
Q

use as
insectiside and
fungicide

A

calcium arsenate

61
Q

The acetate was formerly pyrolyzed in large
amounts to produce acetone, but now it is
employed largely in the dyeing of textiles.

A

calciumm acetate

62
Q

it is an intermediate
in the purification of fermentation lactic acid.

A

calcium lactate

63
Q

is one of the most widely distributed elements,
occupying 1.9 percent of the earth’s crust.

A

magnesium

64
Q

It occurs usually in
the chloride, silicate, hydrated oxide, sulfate, or carbonate, in

either a complex or in simple salts.

A

magnesium

65
Q

first became available
commercially shortly before 1914, when the
Germans initiated production, using
magnesium chloride from the Stassfurt
deposits as the raw material

A

magnesium metal

66
Q

important domestic sources of magnesium
salts

A

seawater. certain salt wells,
bitterns from sea brine, salines, dolomite,
and magnesite (MgCO3)

67
Q

are used extensively for
refractories and insulating compounds, as well as
in the manufacture of rubber, printing inks,
pharmaceuticals, and toilet goods.mag

A

magnesium compound

68
Q

employed as fillers
in inks, paints, and
varnishes.

A

magnesium carbonates

69
Q

is formed on
heating magnesium
carbonate.

A

oxide

70
Q

is made from
seawater.

A

hydroxide

71
Q

prepared by the
action of sulfuric acid
on magnesium
carbonate or
hydroxide.

A

magnesium sulfate

72
Q

made from
hydrochloric acid and
magnesium
hydroxide.

A

magnesium chloride

73
Q

includes asbestos and
talc.

A

magnesium silicates

74
Q

fibrous,
noncombustible
mineral.

A

asbestos

75
Q

is found
naturally in soapstone.

A

talc

CPI FINALS (5 decks)

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