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Cement with good quality and best price

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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

Q: Is the cement used for dental crowns antibacterial?: Hi, dental cements like GIC(glass ionomer cements), Resin cements help repel bacteria because of the fluoride release. They dont have antibacterial properties but only protects the tooth from adhering(sticking) bacteria. Zinc Phosphates with eugenol has bacteriostaric properties but it dissolves in saliva easily.

Q: How long till rubber cement sets?: Rubber cement is actually rubber in a solvent. As the solvent evaporates out, the rubber thickens more and more until it is hard. So, it varies, according to how much of the rubber cement is exposed to air so the solvent can evaporate. It works so well on paper and other things like paper because paper is porous. The paper is like nothing is there to prevent the solvent from evaporating. It will take forever to cement hard plastic since plastic is not porous and the solvent can only get out at the small edges that are uncovered. Nail polish is the same kind of dissolved solid, that hardens as the solvent evaporates out. In nail polish, the solvent is acetone, which is what is mainly in nail polish remover. Rubber cement also has a thinner available for when your can of rubber cement gets too thick.

Q: The chimney is deteriorating due to water getting in the cement block.: Do as the previous answer suggests by adding another flue tile. In order to be up to code you must use refractory cement to join the tiles. Also chip out a little)about half an inch from the flue and fill with a high heat pure silicone. As the flue tile heats up it will expand and then contract when it cools down. The silicone will keep the top from cracking and allowing moisture in. We have been chimney sweeps for 36 years and see crowns always spider cracking from the corner due to expansion. This prevents this from happening and allowing water in. Water will destroy a chimney over time It gets in through the cracks and makes its way to the smoke shelf picking up creosote and fly ash. The mixture turns to a lye like acid and eats the mortar holding the bricks together and soon causes the chimney to fail.

Q: about cement?: What do you want to know?? Here is some info... In the most general sense of the word, cement is a binder, a substance which sets and hardens independently, and can bind other materials together. The name cement goes back to the Romans who used the term opus caementitium to describe masonry which resembled concrete and was made from crushed rock with burnt lime as binder. The volcanic ash and pulverized brick additives which were added to the burnt lime to obtain a hydraulic binder were later referred to as cementum, cimentum, c?ment and cement. Cements used in construction are characterized as hydraulic or non-hydraulic. The most important use of cement is the production of mortar and concrete - the bonding of natural or artificial aggregates to form a strong building material which is durable in the face of normal environmental effects.

Q: ive been waterproofing basements for 13 years. we jackhammer concret all day and the basements get very dusty. masks are worn but their not 100%: its bad, you should be using a face mask, it can cause a disease called silicoses, and it works on your lungs over time like cement hardens. look it up.

Q: what is plastic cement? does it contain asbestos?: Polystyrene Plastic cement is an adhesive used for joining polystyrene parts. The cement contains a solvent that melts the surface of the plastic, allowing the two parts to fuse together. As the solvent evaporates the strength returns to the material, the components having been 'welded' together. As with the asbestos stuff, I don't think the new batches of gun pestic cement has any. The last I know of were supplies that were manifactured before 1991 by subsidiaries of a certain company. These ones contained asbestos. I don't think they do anymore. It has been rectifed. Plastic cement is available as both gel (tube or gun form) and liquid (bottle with applicator).

Q: Part of my cement retaining wall has small cracks and I think after I patch into them I can paint with thinned out cement to blend it in. Would this work?: You can use powdered cement products mixed with a bonding solution as the liquid to enhance their stickiness, and you can also use concrete dyes to match a lot of different colors. These products are available at most big box retailers in their concrete area. The dyes are about $6 for a 12 oz. bottle

Q: how many cubic meters of cement are there in a 40 kgs. (94lbs) bag of portland cement?: The Specific Gravity of Portland Cement is 3.15 so there are 0.0127m3 of Portland cement in a 40kg bag measured as a solid. As the density of the cement in the bag is about 1506kg/m3 (allowing for the voids between the grains) the volume of a 40kg bag is about 0.0266m3

Q: We want to remove the carpet and install wooden vinyl flooring. We were thinking about putting cement board in order to make the floor flat.We were thinking that it would be a better option as oppose to laying the flooring on the wood. Would it be a good idea to lay down cement board?Should we just lay the vinyl on the wood?: If you are putting the vinyl flooring in a kitchen or bathroom then cement board is a good idea. Cement board is use to prevent water damage to the wooden underlayment. It is expensive but worth the cost if you need protection from water damage. If it's in a living room, bedroom, etc then use plywood. This will make your floor flat and make the vinyl sit and look better. It will also strengthen the floor, help eliminate squeaks and add a small amount of insulation to your floor. One other point. Use plywood that is sanded on one side with the sanded side up. This makes a smoother surface and the vinyl panels will stick better.

Q: how to break a cement wall with fist?: Easy ... You have a Cement wall ... On the oppisit side you have to cut X's and squares then put all pieces into a bucket. Hollow out the size of hole you want to make til its 1/4 of an thick. Then scar the inside from the center out like cracks... Then place the bigger pieces back in the hole. can hold them in with masking tape. Make sure you mark the spot to hit dead on... Also tape your wrist. Then Action ..... roll film...... Last you can do the about and use BRASS Knucles to make it easier....

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