PORTLAND CEMENT P.O 42.5

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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

Q: I have horribleee pine green carpet in my room. BUT my walls are brightly painted. I'm suppossed to be getting floors for my room in about a month. I hate looking at my carpet but idk if I should rip it up or if the cement would look bad. My room is decorated nicely so idk if that would make cement look less scary. Should I rip my carpet up? I'm sure its cement underneath.: Leave the carpet for a month, and let the people who are installing the floors rip it up. I'm sure if you've lived with it this long, 30 more days won't hurt. You could buy rugs (that you'll want to use when the new floor is installed), and cover up part of the carpet now.

Q: Need' to get 20 cement blocks home. How many [weight wise] can I put in the back of a PT Cruiser.? About how much does a 'Nellis' type cement block weight?: ABOUT 800 lbs. per load !

Q: Can a grenade blow through brick/cement wall?: Why are you planning to hide behind a brick/cement wall? LOL!! Yes depending on what type of grenade is deployed a brick or cement wall is nothing to blow through. You would be surprised at what a concussion grenade will do to a wall.

Q: How to install cement backer board in a shower?: i use an arrow head type of ceramic tile drill to pre drill the holes, normal drill bits will go blunt. If you need to cut it use a tct jigsaw blade. Also make sure that the sheets are flat. I use dry lining screws as they don't rust I once made the mistake of using sheets that had been stored incorrectly, each one had a kink which could not be pulled out by screwing

Q: RE cement-based polystyrene particles outside the wall insulation system and powder polystyrene particles external wall insulation system materials What is the difference: So, the above two concepts are an inclusive and included relationship, one is all refers to all, one is specifically a type of Mo For example, the two concepts of a patient-mentally patient are an inclusion and an included relationship, and one refers to all patients, a mentally problematic patient

Q: My sister is pouring a sidewalk alongside her house, and wants to have bare foot imprints of her and her two daughters. Its not my thing, but is this safe? I don't think wet cement can hurt you, but is it healthy to go barefootin' in, haha?: wet cement has alkali which is a strong acid, it will burn and peel your skin and turn it into a dry,cracked mess, yes i'm speaking from experience..... if they make a footprint and wash it off IMMEDIATELY it will be fine

Q: its for my physics assignment..thanks!: it absorb energy... such as heat..force or pressure ..

Q: how many cubic feet can i get out of 1 80lb bag of cement using sand and gravel???: 2/3 cubic feet

Q: We have very ugly cement floor for our outside space and want to change it up! We do not want to pour a whole new set of concrete however and we were wondering if we could use something to stick on top of our old concrete! :) We've heard mortar works...but we need direction plz help!!!!: You would have to repour all of it and remove it, unless you don't mind placing the rocks on top and making the floor higher

Q: What's best to use for scrapbooking/card-making, glue stick or rubber cement?: stick, much easier to control and less messy than the cement. and if in the future you want to move something it is much easier to remove and the stain it leaves is minimal

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