PORTLAND CEMENT P.O 42.5

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Product Description:

Specification of Cement

No


Detail


result

I

Chemical test

1

Loss on Ignition

%

2.0 ÷ 4.0

2

Insoluble Residue

%

0.3 ÷ 2.5

3

SiO2

%

19.0 ÷ 22.0

4

Al2O3

%

4.0 ÷ 6.0

5

Fe2O3

%

2.5 ÷ 3.5

6

CaO

%

61.0 ÷ 67.0

7

MgO

%

1.0÷ 4.0

8

SO3

%

1.6÷ 2.2

9

Free lime

%

0.3 ÷ 1.5

10

Toltal alkali, (Max)

%

0.75

11

(C3S + C2S), (Min)

%

54.0

12

C3A, (Max)

%

2.5 ÷ 3.5

14

C4AF, (Max)

%

7 ÷ 11

15

False Set, (Min)

%

50

16

Chloride, (Min)

%

0.1

II

Physiscal test

9 ÷ 11

1

Fineness Blaine, ( Min)

cm2/g

3400

2

Soundness: Lecateller test, ( Max)

mm

5

3

Air content or mortar

%

5 ÷ 10

4

Autoclave Expansion

0.03 ¸ 0.20

5

Setting time, (Vicat test)

Initial,

Final,

min

110 ¸ 160

200 ÷ 300

6

Compressive Strength

3 days, (Min)

7 days, (Min)

28 days, (Min)

psi

2320

3480

5220



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Q:Sand, stone, cement, steel, wood template, and iron template, these are building materials, I would like to ask is: wood template and iron template is what?
Wood template and iron template is made of building materials used for mold, such as in the construction of cement board, beams, gutter ,,, can be used, generally in the building materials market can be purchased, triangular iron is fixed steel
Q:Approximate Cost to Replace Cement Shower With Either Tile or Modern Stall?
By cement slab you refer to the concrete basement floor with a drain in it? Nothing to tear out. A contractor will install a shower pan. Either custom made or a prefab pan and tie into the existing drain. If you want to relocate the shower then he will jack hammer up the slab and run the drain. Save money by having the shower in the same place. For just the shower pan and walls framed, covered with backer board, tile tie into existing hot and cold water supply figure about $4000. If you want to use custom materials like granite and limestone tiles add $1000. Also plan to install an exhaust fan for the steam. If you can be happy with a prefab fiberglass surround it will be half the cost.
Q:how much does 1 cubic foot of portland cement weight in water?
portland cement has a density of 1506 kg/m³ 1 ft³ = 0.0283 m³ that is dry cement, not setup. You didn't specify if it is dry or setup. mass = 1506 kg/m³ x 0.0283 m³ = 42.6 kg The displaced water weighs: density of water at 20C = 0.998 g/cm³ = 998 kg/m³ 998 kg/m³ x 0.0283 m³ = 28.2 kg subtracting, we get 42.6–28.2 = 14.4 kg, or 31.7 lbs. .
Q:Does rubber cement float?
i know regular cement floats,they used to make ships using cement mixed with Styrofoam
Q:i mixed a small amount of self leveling cement?
You want to mix the stuff so that it is like pancake batter. No lumps. The lumps are clumps of still dry concrete. Self leveling works like water.-which is level- So your surface that you want to have level needs a fence all around the perimeter say 3/8 x 2 wideplywood strips in a continuous border......then in the lower centre area (in many cases, the floors of houses, the heating wires get laid - - and then the leveling cement is poured onto the floor(it is runny like batter) and covers the wires and is stopped at the level of just under 3/8. Then it is left alone for a day or three. Then floor tile are dry laid ontop of the level floor....then glued down.
Q:Cement Dusts. Are they safe?
I would take them down from the hangers, shake off as much of the dust as you can then run them through the dryer on a fluff dry without heat. If any dust then remains on your clothes you may have to re wash them. The cement dust will not be harmful unless you breath in a lot of it.
Q:Cement Board????
Well cement board is for setting tile or stone, so if thats the case, you could tile right over the existing bricks so long that they are flat. If not, they can be skim coated with some thinset to achieve a nice setting surface.
Q:cement board subfloor question?
What you need to do is remove the underlayment, not the subfloor. The subfloor is the flat structure consisting of either plywood or planks that holds everything up that's on the floor. The underlayment is a thinner sheet of plywood, OSB (oriented strand board), or MDF (medium density fiber board) used to provide a smooth and flat base at the correct level for the flooring. You're right. Unless you go down to the subfloor, the total thickness of your cement board plus your tile may raise your kitchen floor level above your dining room's. Use the thickness of your underlayment to control this height. You can get underlayment (lewan board) that's only 1/8 thick. Tear up a section of your underlayment to see what its thickness is and how thick the underlayment needs to be for your kitchen floor. Worst case, the cement board can serve as your underlayment. One thing to keep in mind is that the same subfloor that's under the dining room is also under the kitchen. If the dining room flooring is 3/4 hardwood, then you've got a lot of room to play with.
Q:how can i repair a cement block that a beam (2X12X16) rest on it.?
You did not give much info on the cement block just the beam. How big of a block are we talking about? What is the construction of the cement block? 2,000 psi? 2500 psi? How intense was the fire? Most fires will not hurt cement blocks. How much weight is this beam holding? After you take the burnt beam off you can make a better assessment on the cement block. I'm willing to bet my last dollar, it will hold up a new beam fine. Good Luck!
Q:In making a certain type of concrete, the ratio of cement to sand used is 1:4. In making
The answer is C) x If x = 1, the barrel of cement is also 1 If x = 2, te barrel of cement is also 2 and so on

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