Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

PORTLAND CEMENT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

IN THE PORTLAND CEMENT, WHAT PERCENT DOES SILICA MAKES UP

A

13%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

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

A

FALSE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

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

A

1824

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

In 1875 portland cement was produced by what company

A

Coplay
Cement Company of David
Saylor in Pennsylvania.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Production of portland cement
reached

A

400,000
tons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The
limestone version of PC is called

A

caliche

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The clay version of PC is called

A

portland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

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

A

lime
silica
alumina
iron oxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

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

A

calcareous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

portland cement that is rich in silica , such as
clay

A

(argillaceous)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

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

A

cement rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Abbreviation for CO2 clinker compound

A

C’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Abbreviation for SO3

A

S^

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Usual products for general construction.

A

TYPE 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

TYPES OF TYPE 1 PC

A

White
oil-well
quick-setting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

contains less ferric oxide

A

white type 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

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

A

TYPE 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
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.
tYPE 3 hes
26
They contain a higher proportion of tricalcium silicate (CS) than regular portland cements.
type 3
27
Roads constructed from HES cement can be put into service sooner than roads constructed from regular cement.t
true
28
contain a lower percentage of tricalcium silicate (C3S)and tricalcium aluminate (C3A), thus lowering the heat evolution.
type 4
29
composition or processing resist sulfates better than other four types. It is used when high sulfate resistance is required.
type 5-sulfate resisting pc
30
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
air entrainment
31
has the highest C3S
Type 3
32
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.
pozzolans
33
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.
high alumina cements
34
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.
silicate cements
35
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.
sulfur cements
36
usually contain no portland cement.
polymer concrete
37
discovered by the French chemist Sorel and sometimes called Sorel's cement,
magnesium oxychloride cement
38
is the cheapest, most widely used alkali in the world.
lime
39
usually gray, but it may also be white, yellow or brown.
lime
40
a soft rock and is easily scratched.
lime
41
a lime composed principally of calcium carbonate
calcite
42
a lime composed principally of double carbonate of calcium and magnesium
dolomite
43
It is commonly composed of tiny fossils, shell fragments and other fossilized debris.
lime
44
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.
dugout kilns
45
is the 5th most abundant element in the Earth's crust
Calcium
46
forms 20% of the world's sedimentary rock.
limestone or chalk
47
The Romans used ____________ mixtures in many construction projects.
hydraulic lime and lime pozzolan
48
referred to the use of lime for bleaching linen.
xenophon
49
Mediterranean pips were familiar with lime as a
paint
50
Today, lime products are being used to restore historical buildings back to their former glory, as well as for constructing new build properties.
true
51
may be used for medicinal purposes, insecticides, plant and animal food, gas absorption, precipitation, dehydration, and causticizing.
lime
52
It serves as a basic raw material in the production of calcium salts and for improving the quality of certain soils.
lime
53
in chem usage ______ preferred as a starting material because of the high- calcium lime that results.
pure limestone
54
CaCO3 >< CaO+CO2
Calcination
55
CaO+H2O.Ca(OH)2
Hydration
56
two types of kiln used to produce lime
rotary kiln vertical kiln
57
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.
calcium carbonate
58
Use as a depilatory in the tanning industry and cosmetics.
calcium sulfide
59
to lay dust on highways and to melt ice and snow in winter
halide salts
60
use as insectiside and fungicide
calcium arsenate
61
The acetate was formerly pyrolyzed in large amounts to produce acetone, but now it is employed largely in the dyeing of textiles.
calciumm acetate
62
it is an intermediate in the purification of fermentation lactic acid.
calcium lactate
63
is one of the most widely distributed elements, occupying 1.9 percent of the earth's crust.
magnesium
64
It occurs usually in the chloride, silicate, hydrated oxide, sulfate, or carbonate, in either a complex or in simple salts.
magnesium
65
first became available commercially shortly before 1914, when the Germans initiated production, using magnesium chloride from the Stassfurt deposits as the raw material
magnesium metal
66
important domestic sources of magnesium salts
seawater. certain salt wells, bitterns from sea brine, salines, dolomite, and magnesite (MgCO3)
67
are used extensively for refractories and insulating compounds, as well as in the manufacture of rubber, printing inks, pharmaceuticals, and toilet goods.mag
magnesium compound
68
employed as fillers in inks, paints, and varnishes.
magnesium carbonates
69
is formed on heating magnesium carbonate.
oxide
70
is made from seawater.
hydroxide
71
prepared by the action of sulfuric acid on magnesium carbonate or hydroxide.
magnesium sulfate
72
made from hydrochloric acid and magnesium hydroxide.
magnesium chloride
73
includes asbestos and talc.
magnesium silicates
74
fibrous, noncombustible mineral.
asbestos
75
is found naturally in soapstone.
talc

CPI FINALS (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions