P.O 42.5 R/N CEMENT

Inquire Now

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

You Might Also Like

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: what is acid soluble cement?: Acid soluble cement is a blend of cement that dissolves in acid. Its properties provide reduced slurry density, low viscosity and sufficient compressive strength, thus making it an excellent production slurry for cementing horizontal laterals for unconventional gas.

Q: How Fireproof Is Cement? I Tryed To Make A Mold For Metal Casting Out Of It, But It Fell To Pieces. Did I Make It Wrong, Or Is Cement No Good For 1100?C+ ??: The only thing I know about this is that for metal casting you are supposed to cover a concrete floor with sand, so if molten metal spills onto the floor possibly remaining water in the floor won't make it break up/explode. So I guess concrete is no good or you have at least to heat it up so all water will have evaporated. For bronze casting one generally uses a plaster-silica sand mix (between 1:1 to 1:2). Other options are sand molds. You could google green sand mold and look what info you find on that. Green sand mold means that the sand is just held together by using water. Another option is a resin bonded sand mold. Yet another are ceramic shell molds, but they are much more bother to make, so I'd not recommend trying to set this up just for yourself. It depends what level of detail you need and what you want to cast. For jewelry style casting bought investment material are generally better, but uneconomical for anything larger.

Q: I need a list of cement, concrete and aggregates Public companies the most important ones or largest Co.!: here are some of the largest: cemex holcim ltd lararge florida rock there are many others, go to yahoo finance, they will list may others. Hope this helps.

Q: well my name is carved into the cement driveway next to my house. if my parents see that i'll be in BIG trouble. so does anyone know how to like remove writing out of the cement driveway? please anyone help. 10 points for the most helpful answer.: Pouring cement into it would probably do or just tell your parents and promise them not to do it again.

Q: Why will quarries (cement factory places) reduce carbon dioxide emissions?: Cement plants - not so much the quarries (although their motorized industrial vehicles will also have to start improving performance). The production of cement starts with limestone (CaCO3) plus some additional bits to provide Si, Fe and Al. The whole lot is put into a rotating kiln that roasts the mixture. CO2 off-gases, leaving high-temperature Ca-Si-Al-Fe-O compounds that form the clinker for portland cement. Because modern (and developing ) societies use huge amounts of cement for construction uses and buildings, roadways, bridges, airport runways ... - enormous amounts of limestone are roasted, releasing CO2. Look at the molecular/atomic weights, and you;ll see that 44% by mass of all the CaCO3 that is treated will report to the environment as CO2. Mark L.

Q: I spray painted a lamp in my garage and now i have a circle on the cement. How do i get it off with out using one of those power spayers?: try a spray on oven cleaner. i don't know if it will work on cement, but i know it takes paint off of metal and other things. i know brake fluid will take the paint off of your car, but i think that would stain the cement. sorry i couldn't be more help. or maybe just plain old paint thinner, or acetone (fingernail polish remover).

Q: i xcan do an ollie perfect on grass, but not on cementPlease give tips on how i can be able to do it on cement!!!!!HELP!: Okay, ollieing on cement is not much different at all... its just your fear of falling and getting hurt. Heres what you have to do, When you ollie lean forward alot more than what you normally would in grass, second when you jump try to keep your legs level dont leave one higher than the other... this usually results in doing a split. Third when you land bend your knees dont keep them straight or your gonna bust your ***.....1.Lean Forward.2.Feet are Level.3.Bend Knees When Landing.

Q: how do we calculate how much we need and how is it done: people always confuse cement with concrete. The concrete volume has been described already, but the quantity of cement per cubic yard averages 5 to 6 sacks of cements per cubic yard. A sack of cement weighs 94 lbs, so you are looking at 470 to 564 lbs of cement per cubic yard of concrete.

Q: what is its exact chemical composition?: 1. feel slippery- bases are slippery. 2. corrode materials 3. red litmus paper 4. cleaning supplies 5. acidic

Q: Is a Cemented or Uncemented Prosthesis Better?: The response to this differs for various people. Because each person’s condition is exclusive, the physician and also you must weigh the pros and cons. Cemented substitutes tend to be more commonly used for older, less active people and individuals with weak bones, for example individuals who've brittle bones, while uncemented substitutes tend to be more commonly used for more youthful, more active people. Research has shown that cemented and uncemented prostheses have comparable rates of success. Studies also indicate that if you want one more hip replacement, or revision, the rates of success for cemented and uncemented prostheses are comparable. However, more lengthy-term data can be found in the U . s . States for stylish substitutes with cemented prostheses, because doctors have used them here because the late sixties, whereas uncemented prostheses weren't introduced before the late seventies. The main drawback to an uncemented prosthesis may be the extended recovery period. Since it requires a very long time for that natural bone to develop and fix towards the prosthesis, you aren't uncemented substitutes must limit activities for approximately 3 several weeks to safeguard the stylish joint. Also, it's more prevalent for somebody by having an uncemented prosthesis to see leg discomfort within the several weeks following a surgery, as the bone keeps growing in to the prosthesis.

Send your message to us

*Email

*TEL

*Quantity

*Unit