portland cement 42.5N or R 32.5N or R 52.5N or R

Ref Price:
Loading Port:
China Main Port
Payment Terms:
TT OR LC
Min Order Qty:
-
Supply Capability:
-

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Product Description

(1)Grade:  portland cement42.5(china standard GB175-2007)


(2)Packing : 50kg PP Bag,then into 1MT,1.5MT,2MT sling bagj

                   1mt,2mt jumbo bag


(3)Quantity: 100,000mt per month


(4)Loading port: rizhao /qingdao/longkou, china


(5)Payment: by irrevocable Letter of Credit at sight or TT


(6)Shipment: within 30 days after the date of L/C .


(7)Inspection: by CIQ


Cement Specifications: Type 1 425

Chemical composition

Amount

ISIRI389

Amount

ISIRI389

Silicon dioxide %SiO2

20.5 – 21.5

---

Insotuble Residue %I.R

0.30 – 0.50

<0.75

Aluminium Oxide %AL2O3

4.2 – 5.6

---

Free Lime %Free CaO

0.80 – 1.70

---

Ferric Oxide %Fe2O

3.00 – 3.60

---

Lime Saturation Factor LSF

93.0 – 95.0

---

Calcium Oxide %CaO

64.0 – 66.50

---

Silica Module SLM

2.30 – 2.50

---

Mangnesium Oxide %MgO

1.0 – 2.7

<5.0

Alomina Moddule ALM

1.1 – 1.3

---

Sulphur Trioxide %SO3

1.5 – 2.3

<3.0

Tricalcium Silicate %C3S

56.0 – 62.0

---

Potassium Oxide %K2O

0.60 – 0.75

---

Dicalcium Silicate %C2S

14.0 – 18.0

---

Sodium Oxide %Na2O

0.45 – 0.65

---

Tricalcium Aluminate %C3A

8.05 – 8.50

---

Loss On Ignition %L.O.I

0.90 – 1.60

<3.0

Tetracalicium Aluminoferri %C4AF

9.0 – 11.0

---

Physical Test

Unit

Amount

ISIRI389

Blaine Test

(Cm2/gr)

3200 -3400

>2800

Autoclave Expansion

(%)

0.09 - 0.20

<0.8

Setting Time:

Initial

(Minute)

105 - 160

>45

Final

(Minute)

135 - 300

<360

Compressive Strength:

After 3 Days

(Kg/Cm2)

230 - 260

>100

After 28 Days

(Kg/Cm2)

420 - 440

>425

Remarks:

LSF = 100 CaO/(2.80 SiO2 + 0.65Fe2O3 + 1.18Al2O3)

C3S = 4.07 CaO - (7.6 SiO2 + 6.718 Al2O3+ 1.43 Fe2O3 + 2.852SO3)

C2S = 2.867SiO2 - 0.754C3S

C3A=2.65 Al2O3 - 1.692 Fe2O3

C4AF = 3.043 Fe2O3



Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What is Porland Cement?
It's the most common form of cement and made from concrete, mortar, stucco and grout. It was developed in England and the result was thought of as being comparable with Portland limestone, an oft used building stone obtained from the south coast in Dorset. Thar's what it's named after.
Q:1)what do you mean by portal cement? 2)wt is the meaning of analar element? tnx.?
Portland Cement is cement made using limestone from Portland, Dorset, England. Analar is a mark meaning very high grade of purity. I expect it stands for analytical reagent.
Q:Which did the Romans invent? Concrete or Cement?
Both. Ever since civilizations first started to build, we've sought a material that would bind stones into a solid, formed mass. The Assyrians and Babylonians used clay for this purpose, and the Egyptians advanced to the discovery of lime and gypsum mortar as a binding agent for building such structures as the Pyramids. The Greeks made further improvements and finally the Romans developed a cement that produced structures of remarkable durability. Most of the building foundations in the Roman Forum were constructed of a form of concrete, placed in some locations to a depth of 12 feet. The great Roman baths built about 27 B.C., the Coliseum, and the huge Basilica of Constantine are examples of early Roman architecture in which cement mortar was used. Roman Formula The secret of Roman success in making cement was traced to the mixing of slaked lime with pozzolana, a volcanic ash from Mount Vesuvius. This process produced a cement capable of hardening under water. During the Middle Ages this art was lost and it was not until the scientific spirit of inquiry revived that we rediscovered the secret of hydraulic cement -- cement that will harden under water.
Q:What exactly is Oilfield cement?
I have never worked in the Oil Patch, but I believe oilfield cement is a mixture of sand, aggregate and a barium compound (barium carbonate, maybe). If you look at the Periodic Table, you will see that barium lies under calcium, and has the same properties (more or less). Since barium is denser, when an over-pressured oil reservoir is breached, this mixture plugs up the drill hole until the well can be capped. This is a major use of the element barium.
Q:Does fiber cement siding have to be repainted?
Unless you buy the cement board siding already painted you will need to paint it. As for painting it every few years like wood....the paint will hold up much better on the cement board.
Q:why are cement factories important for the economics in uae?
cement is one of many things that are necessary for oil production and all construction.
Q:What formulas to use in figuring how much water/cement/stone/sand for a test cylinder.?
First you need to determine the specific density of the cement usually 3100kg/m3. The aggregate and sand will be about 2600kg/m3. Next determine the ratio of cement to fine aggregate (sand) to coarse aggregate. A fairly low strength concrete would have a ratio by weight of 1:2:4. The density of the finished concrete will be about 2400kg/m3. So start with 100kg of OPC (Ordinary Portland Cement) then fine aggregate is 200kg and coarse aggregate is 400kg. The water is 55kg (0.55 w/c ratio). Add up total weight and obtain volume by using overall density of mixture (2600kg/m3). This volume is called the yield. By using the ratio of the quantity that you require against the yield using 100kg of OPC you can calculate the amount of OPC, sand, Aggregate and water that you need.
Q:i wrote a poem titled 'wet cement' please rate from 1-10 :)?
a bit short, but cute! Try to make your sentences longer, if possible... give more detail.... 6/10
Q:Any one know the differnt ratios of sand and cement for the different strengths of concrete eg. 25N 35N etc.?
Cement to aggregate ratios do not determine concrete strength. The water to cement ratio is what determines strength. Sand, gravel and other aggregates act as a bonding agent. Normal ratio is 7-15% cement to 14-21% water with remaining percentage as the aggregate.
Q:Cement Floors?
if you rip the carpet up, you can't just leave the floor like that. Not even for just a month. Wait out the month with the carpeting you have.

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range