Ordinary Portland Cement 32.5

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5000 Metric Tons m.t.

Supply Capability:: 10000 Metric Tons per Month m.t./month

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Highest quality for Portland cement 42.5

*Main Raw Material: Silicate

*Type: Ordinary Silicate Cement

*Hardening Feature: Rapid Hardening

*Heat of Hydration: Low-Heat

*Strength Grade(Mpa): 62.5R, 62.5, 52.5R, 52.5, 42.5R, 42.5, 32.5

*Standard: GB175-2007

specification

1.steady and high quality,abrasion resistance

2.low fluctuate,good strength grade.

3.experienced factory

Detailed Descriptions:

1. Standard: national standards (GB175-2007)

2. Our product range: P.C32.5/32.5R, P.O42.5/42.5R,52.5 ordinary portland cement

Packing:

1. 2MT jumbo bag

2. 50kg per bag then 40 bags into a 2MT sling bag

3. 50kg bag

The typical performance during using:

1. Steady and high quality, low fluctuate, and rich in strength grade.

2. Good workability and adaptability with additives.

3. Long term steady in color, wide used in the construction of modest color building.

4. Low bleeding, be applicable to produce concrete.

5. Freeze-proof, abrasion resistance.

6. Steady solidity ratio, the volumetric shrinkage basically reach to balance at one-year age, up to the high standard of international and domestic.

7. Meanwhile, its low slump loss meets the need of the long distance delivery of concrete-mixer.

Attention:

1. Pay attention to store, and avoid moisture.

2. Cannot mix different type cement together.

3. To select certain type and grade cement reasonablly.

4. Stick to pre-testing of concrete.

5. To carry out specility testing, work out the best mix ratio

Q: Technical question here. I know they can make marine cement by, essentially, bubbling CO2 through sufficiently basic ocean water and letting insoluble calcium and magnesium carbonates form. I don't know the details further than that, but it's something like that. One problem is that, in order to negate the acidifying effects of the CO2, they have to add a base.I know that at least some desert soils (maybe most of them) are fairly alkaline, and contain a lot of calcium and magnesium and such. So could you meaningfully take a bunch of desert soil, put it in water, then bubble CO2 through it to make marine cement? Or would there be a simpler (or at least less water-intensive) method to collect the calcium and magnesium carbonate from desert soils for use as cement? Or is there some other broad aspect or angle of the problem that I'm missing?: Caliche is a hardened desert soil (rock) that is typically near the surface. I would think that you would end up digging a lot of desert to get much carbonates. There would be a large amount of heavy equipment use, lots of dust, and lots of lost habitat. Typically cement is produced by exposures of limestone that are ground down and converted to cement. I would think this would generally be a more economical and more environmentally friendly option. Since you apparently have a chemistry background, you may already know this, but cement is generally made by taking calcite or dolomite and heating it up to create lime / cement. This has been done since the Roman Empire. I have never heard of bubbling CO2 in calcium and magnesium carbonates. Are you suggesting that bubbling CO2 in ocean water will precipitate calcite? I think it would probably have the opposite effect and create more acidity which would tend to dissolve carbonates. Note: Ocean water is very basic. It is far from acidic and will almost certainly never become acidic. If you add a base to the desert soil, form a pile on the ocean floor, and bubble CO2 into it, you might precipitate some CO2 if the water is warm enough IMO. It would probably make more sense in most instances to simply use regular cement which is designed to form a very solid and strong structure. Carbonates will precipitate out of sea water in warm shallow water. Some of the beaches of the Bahamas are formed from precipitated carbonates called oolites.

Q: Hello!We are removing our corner shower and installing a soaker bath tub with a 4pc tub wall kit. When I removed the shower wall kit, I noticed that it was glued to drywall only!! I was surprised that it wasn't wet or moldy. My question is - can I leave the drywall where it is and just install the aqua board or cement board over it, and then install the tub wall kit over that? Or do I have to remove the drywall? Should I use aqua board or cement board? I am going to use a tub wall kit.Husband says to remove the drywall....but I'm the one doing all the labor while he is away at work....so if I can leave the drywall on that's a plus!Thanks!: There are a number of options available now so the choice is yours and dependant on the circumstances of your project regarding which one would be best. While many people do install tile directly over a wood sub floor that does not make it right. Tile has considerable permanence. It is somewhat involved to properly install and difficult to remove if the installation is not done correctly. The final outcome of a tile installation, like so many other projects depends largely on the preparation. So many people skip many of the necessary early steps that really do not cost that much extra but make a huge difference on the outcome. Use a backer system. G. Borders Home Repair, Improvement, Handyman Service Plano Home Repair

Q: do i have to put any thing down on the painted floor FIRST?: if the floor is concrete then apply thin set ( this is not cement applied thinly) with a notched trowel. back butter the tile and drop in in. you can't install ceramic or stone directly to wood or plywood. even painted. you could use wonder board or hardie backer applied first, but I've had this stuff fail before. old skool way for wood get expanded steel mesh ( wire lath ) and put it on floor and nail or staple it to the floor. IT IS SHARP so wear gloves. you don't need to get it real neat and a gap uf a few inches is ok as long as that's not a grout line. then apply a good quality polymerized setting mortar, right hrough the mesh, such as versabond. you don't need additives just water.. you could also use flexbond if you want a little extra quality. when the floor sets up you have a very durable monolithic piece on the floor. I have been doing floors this way for years and I have never had a failure. I've even used it in applications where the deflection of the floor over it's span has exceeded the amount allowed. no failure and that's my ex, you gotta know that she would let me know. been 10 years if you don't get it right or skip the underlay or use mastic the floor will fail.. as noted by the grout coming out. the only cure for this is rip it out and start over.

Q: I am making 9 concrete casts from a fiberglass mold I made from a 60 pound concrete pier cap. I understand that aggregate increases the strength of cured concrete, but these pier caps are only ornamental. Can I use just sand portland cement, instead of bagged concrete mix? If so, what should the ratio of sand to portland cement be? Any other suggestions or advice would be welcomed. ~ Thank you: Erm... sand + cement = mortar. Concrete includes rocks/pebbles (reckoning on the use). purchase some waiting blend concrete from a DIY save. end of subject. 40mm deep? Will you throw down some hardcore first? appears like this would be a activity for some paving slabs which *can* be laid with little bit of mortar.

Q: Contact Cement, how does it work? or quot;whyquot; does it work, what kind of reaction?: Rubber cement is an adhesive made from elastic polymers (typically latex) mixed in a solvent such as acetone, hexane, heptane or benzene to keep them fluid enough to be used. This makes it part of the class of drying adhesives: as the solvents quickly evaporate, the rubber portion remains behind, forming a strong yet flexible bond. Often a small percentage of alcohol is added to the mix.

Q: what is the Density of Port land cement, and which material is mostly use in cement.?: Typical constituents of Portland cement are CaO: 61-67%; SiO2: 19-23%; Al2O3: 2.5-6%; Fe2O3: 0-6%; various sulfates: 1.5-4.5%. Also, after hardening, Portland cement will slowly absorb CO2 from the atmosphere to form insoluble CaCO3. The density is 1510 kg/m^3 in bags, or 3150 kg/m^3 in mix design.

Q: i'm replacing the old wall in my tub with hardibacker. can i screw it on the tub lip? coz the instructions said that it should be screwed or nailed 3/8quot; from the eges.: I would say not really - since every screw hole is now a weak point and they form a really good fracture line. In the case where the material willhave some structural support along the screw hole line it's probably fine.

Q: Why does wet cement have a strange odour?: Stop sniffing cement you might hurt yourself !!! The odor is from CHEMICALS It can burn thin skin (skin of dishpaned hands not used to doing cement work) call your local masonary supply for a qualified mason reference.

Q: Please any one says me Chemical composition of Portland cement?: Typical constituents of and Portland cement Mass% Calcium oxide, CaO 61-67% Silicon oxide, SiO2 19-23% Aluminum oxide, Al2O3 2.5-6% Ferric oxide, Fe2O3 0-6% Sulfate 1.5-4.5%

Q: They all seem to refer to the same thing, is it determined based on how each is used on context or are all interchangeable with each other?: Asphalt is made from bitumen, a tar like substance. It is mixed with sand and gravel and steam rolled into a flat surface. Also called blacktop. Concrete is a mixture of sand gravel and cement and water that is poured into a mold and set up to dry and harden. Sometimes used with rebar or steel called reinforced concrete. Cement is a dry gray powder sometimes called portland cement that is used to make concrete from. Brick layers use conrete with out rocks just sand added. They call i t mud.

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1. Manufacturer Overview

Location	Shandong,China (Mainland)
Year Established	2011
Annual Output Value	US$10 Million - US$50 Million
Main Markets	North America; South America; Eastern Europe; Southeast Asia; Africa; Oceania; Mid East; Eastern Asia; Western Europe; Central America; Northern Europe; Southern Europe; South Asia
Company Certifications	ISO 9001:2000;CE

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Qingdao PORT, Yantai port, Shanghai port
Export Percentage	91% - 100%
No.of Employees in Trade Department	Above 50 People
Language Spoken:	English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian
b) Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines	10
Contract Manufacturing	OEM Service Offered
Product Price Range	High and/or Average