CIM-I Portland cement

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Specification of Cement





Chemical test


Loss on Ignition


2.0 ÷ 4.0


Insoluble Residue


0.3 ÷ 2.5




19.0 ÷ 22.0




4.0 ÷ 6.0




2.5 ÷ 3.5




61.0 ÷ 67.0




1.0÷ 4.0




1.6÷ 2.2


Free lime


0.3 ÷ 1.5


Toltal alkali, (Max)




(C3S + C2S), (Min)




C3A, (Max)


2.5 ÷ 3.5


C4AF, (Max)


7 ÷ 11


False Set, (Min)




Chloride, (Min)




Physiscal test

9 ÷ 11


Fineness Blaine, ( Min)




Soundness: Lecateller test, ( Max)




Air content or mortar


5 ÷ 10


Autoclave Expansion

0.03 ¸ 0.20


Setting time, (Vicat test)




110 ¸ 160

200 ÷ 300


Compressive Strength

3 days, (Min)

7 days, (Min)

28 days, (Min)





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Q:what is the hard, cement like covering that has been painted over brick walls of basement?
It's a special type of waterproofing finish that is meant for block walls--probably a type of stucco with added plastic compounds that make it impervious to water. You can't use joint compound---it's not meant to be applied over block, stone, or brick. You have to use a grout-like substance--something that contains an adhesive to make it stick, and some additional ingredients to keep it from absorbing water. Go to your local box store, hardware or construction store and ask them what they would recommend--take a piece of the chipped off stuff with you so they can identify what is already on the walls. Then use a waterproof basement paint to finish it off after you patch. I gotta tell you, though--if you have a problem UNDER the stuff now, (because it's bubbling and cracking) you won't get rid of that problem by patching--you may have to get a pro in there to waterproof and seal the block from scratch. And that's a lot of $$.
Q:cement and concrete as composite?
If your asking if they are composites then yes. Concrete is a composite construction material composed primarily of aggregate, cement, and water. There are many formulations, which provide varied properties. The aggregate is generally a coarse gravel or crushed rocks such as limestone, or granite, along with a fine aggregate such as sand. Portland cement (often referred to as OPC, from Ordinary Portland Cement) is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. It usually originates from limestone. It is a fine powder produced by grinding Portland cement clinker (more than 90%), a limited amount of calcium sulfate (which controls the set time) and up to 5% minor constituents as allowed by various standards such as the European Standard EN197-1:
Q:are there any any companies that clean oil off of cement garage floors?
I used degreaser on mine I found it at the automotive store. and than I hosed it down with a power washer.
Q:I just got a model kit, and it says I have to cement plastic parts together? Where do I get cement?
any craft store will have model glue. You can also use super glue-gel form is easier to use
Q:I have an older garage which has a dirt floor. How can I cement the floor?
First off you won't just use cement you will need concrete. cement is a material that is used to make concrete. For a garage use a 6 bag half air mix. most garages are poured at a 4 in thickness at about a 4-5 in slump. 6 bag mix will give you about a 4000 psi if poured at a 4 in slump. the consitancy to your concrete is important to keep the strength this what I mean by slump. use wire mesh and an synthetic fiber to strengthen your concrete to help prevent cracking. if you have a 25x20x4 you will need 6.25 yards of crete. if your grade isn't good you may want to go with 6.5 yards. if using mesh which is a good idea you will need chairs too.
Q:Oil drilling - cement casing?
The cement is injected at the bottom of the casing by using the drill pipe which lowered into the well. Drill pipe is hollow to allow drilling mud to be circulating during the drilling phase but it a can also take the cement and spot it at the bottom of the well. Knowing the depth of the well and the size of the drill bit being used along with the casing size, the cement company can calculate (with a safety factor) the amount of cement to inject to seal the space between the well bore and the casing. As to what BP did or did not do relative to their casing design, I am not sure but it does appear that the cement plug failed and let the oil reservoir pressure back into the well bore. Because the well bore was filled with salt water at the time and not drilling mud, the hydrostatic pressure of the salt water was not sufficient to counter balance the reservoir pressure. Casing designs vary with the conditions for a specific well or field and are set by the company owning the well. There are general industry best practices but I don't believe they are incorporated into any API standards.
Q:can ticks be found on cement?
If the cement area is out of doors the answer is yes. But I would not think it would be in great numbers. Ticks live in wooded areas or grassy fields. If you have either near you they can migrate to your yard. Ticks do not jump or fly but can hitch a ride on any passing wild life. A squirrel coming through your yard can bring them in. I don't know where you are located but here in southern Illinois we havparticularlycularily bad season for both fleas and ticks. Google and read up on the proper method of removing embedded ticks.
Q:looking for way to inlay small stones or pea gravel into new cement walk way?
Unless the cement is still wet, it is not possible. If you haven't poured the cement yet, you can just broadcast it on.
Q:limestone -> cement, concrete and glass?
I'll leave you to make glass out of limestone. Most people prefer to use sand. Cement is made by crushing the limestone down into a powder. Concrete gets made from cement mixed with other stuff such as water, sand.
Q:Cement Truck Drivers?
Actually cement trucks don't need cleaning at all. Concrete trucks, on the other hand, are quite messy. Perhaps we should clarify the terminology?

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