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I. CEMENT STANDARD

1.Vietnam standard (TCVN)

- Quality of Cement as per TCVN 6260 - 2009

2.European standard (EN)

- Certificate I -EN 197-1.2000- CEM II 42,5 R

- Certificate II - En 197-1.2000 CEM II 42,5N

- Certificate III - EN 197-1.2000 CEM I 42,5R

3.American standard (ASTM)

- ASTM C150 TYPE-1

- ASTM C1157 TYPE- GU

- ASTM C1157 TYPE- HE


II. SPECIFICATIONS FOR ORIDINARY PORTLAND CEMENT AS PER EN 197-1:2000/CEM II 42.5

Items

Units

Specification

Test Results

Test Method

SiO2

%

≤ 26.00

23.41

EN 196-2

Al2O3

%

≤ 6.50

5.50

Fe2O3

%

≤ 4.50

3.60

CaO

%

≥ 54.00

57.00

MgO

%

≤ 5.00

2.75

SO3

%

≤ 3.5

2.56

Loss on Ignition, (LOI)

%

≤ 10.00

7.00

Insoluble Residue

%

≤ 12

6.00

Physical and Mechanical Properties

Finess test

EN 196-6

-          Blaine

cm2/g

≥  3200

3800

-          Retained content on sieve 75mm

%

< 15.0

0.10

Time of setting

-                      Initial set

-                      Final set

Minutes

            ≥  75                      

< 420

145

200

EN 196-3

Soundness (LeChatelier)

mm

< 10.0

1.0

EN 196-3

Compressive strength

MPa

EN 196-1

2 Days

≥ 20.0

23.0

3 Days

-

27.0

7 Days

-

37.0

28 Days

≥  42.5

50.0



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Q:PAINTING Cement statues????HELP?
you okorder.com also check out a large art supply company such as Dick Blick
Q:Brick factory construction period to buy the building materials, contract construction costs (including playing mud, playing plant shed), small wages, electrical equipment,
If it is the outsourcing of the enterprise infrastructure projects, it is recommended to set up "construction in progress" accounting subjects
Q:what is the difference between cement and concrete ?
Cement is a bonding agent (lime). Concrete has cement, aggregate (small rocks), and sand. You add water to a concrete mix to cause a chemical reaction that makes it solid.
Q:about laying blocks what kind of cement do you use
If you are laying concrete blocks (cinder blocks) for a block wall then you put motar between the blocks as you lay them. Mortar is a cement and sand mixture. You can buy motar mix at the hardware store. Cement is powder substanse that is used to make Concrete and Mortor. Concrete contains Cement, Aggrigate (rocks), Sand, and Water. People often refer to a sidwalk or driveway as being made of cement. Technically this is incorrect. Sidewalks and driveways are made out of Concrete. Cement is just one of the ingediants in concrete.
Q:I have an older garage which has a dirt floor. How can I cement the floor?
dig down 6 inches and fill with cement have fun
Q:history of the development of cement?
Cement history Throughout history, cementing materials have played a vital role. They were used widely in the ancient world. The Egyptians used calcined gypsum as a cement. The Greeks and Romans used lime made by heating limestone and added sand to make mortar, with coarser stones for concrete. The Romans found that a cement could be made which set under water and this was used for the construction of harbours. The cement was made by adding crushed volcanic ash to lime and was later called a pozzolanic cement, named after the village of Pozzuoli near Vesuvius. In places such as Britain, where volcanic ash was scarce, crushed brick or tile was used instead. The Romans were therefore probably the first to manipulate the properties of cementitious materials for specific applications and situations.
Q:Do you think another cement plant should be built?
I dont understand what you mean? We have many cement plants and we use the stuff because its fairly cheap and does a great job. The thing about cement is that its very expensive to transport so most cement companies will setup shop near a port or rail transportation (since those are cheaper than by truck) and will setup near where it will be used a lot. I dont think there is a shortage, there's naturally plenty of stuff to make cement.
Q:I need to find the properties and additives of a cement produced by a cement producer?
Portland Cement Cement Composition. The composition of portland cements is what distinguishes one type of cement from another. ASTM C 150 and AASHTO M 85 present the standard chemical requirements for each type. The phase compositions in portland cement are denoted by ASTM as tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and tetracalcium aluminoferrite (C4AF). However, it should be noted that these compositions would occur at a phase equilibrium of all components in the mix and do not reflect effects of burn temperatures, quenching, oxygen availability, and other real-world kiln conditions. The actual components are often complex chemical crystalline and amorphous structures, denoted by cement chemists as elite (C3S), belite (C2S), and various forms of aluminates.
Q:what is the difference between refractory cement and furnace cement?
Furnace cement is a finer grit meant for patching up seams to make them air tight. Refractory cement is for the cast concrete structures themselves.
Q:What gets paint of cement?
Lots of patience

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