Gold Carp Brand Portland Pulverized-fuel Ash Cement


After Gold Carp Brand Portland Cement, Macau Cement Manufacturing Co., Ltd. (Sociedade de Cimentos de Macau, S.A.R.L), is introducing another high quality new product, Gold Carp Brand Portland Pulverized-fuel Ash Cement.

Gold Crap Brand PFA cement conforms to Chinese specification GB1344-92 as well as the new Macanese cement standards. Using high quality Portland cement clinker and fly ash, together with specific techniques, rapid hardening Portland Pulverized-fuel Ash Cement is produced

With increasing demand for electricity from modern cities, thousand tons of fly ash are produced daily by coal-firing power stations. This brings enormous risks to our environment. To encourage environmental protection, Macau Cement has invested over MOP10 million to modify our production line to produce PFA cement. This has the beneficial effect of reusing fly ash as a construction material instead of discarding it into the environment.


Gold Carp PFA cement as the following properties:

1.      Rapid Hardening

2.      Better Workability

3.      High Weather Resistance

4.      Good Durability

5.      Low Heat of Hydration

6.      Low Water Requirement

7.      Low Shrinkage

8.      Low Bleeding   


PFA cement has been widely used by industrial countries like Europe, U.S.A and Russia, especially for the construction of dams, tunnels and harbour projects.

The Public Works Department (DSSSOPT) has requested LECM to come up with a set of cement standards for Macau. These include standards for blended FA cement. MCM’s PFA cement conforms to these standards.

During recent years, PFA cement has also been widely used in Guangdong and Hong Kong area, such as Guangzhou Garden Hotel, Shenzhen Days Bay Nuclear Plant, Hon Kong East Cross Harbour Tunnel, HK Government Building, etc. PFA cement is widely appreciated.


CEMENT TEST REPORT

(Cement is tested in accordance with GB-1344-92 requirements)

ITEMS

GB 1344-92
(425R)

PF-425R 
Typical Result

A. Fineness(0.08mm. Retain)
   細度(0.08mm篩餘)

<10.0%

2.0%
(370 m2/kg)

B. MORTAR compressive strength
  標準漿抗壓強度

 3days         3天

 7days         7天

 28days     28天

 


>19.0MPa

--

>45.5MPa

 

 
24.0MPa

33.0MPa

47.5MPa

C. Initial setting time
  初凝時間

>45min

210min

D. Soundness (boiled)
  安定性(沸煮法)

pass

pass

E. MgO content of cement
  氧化鎂含量

<5.0%

3.0%

F. SO3 content of cement
  三氧化硫含量

<3.5%

2.5%

G. Alkali content of cement
  鹼含量

--

0.4%

H. Chloride content of cement
  氯含量

--

0.008%

I. Additive – Grinding aid
  助磨劑含量

--

<1.0%

J. Fly ash content
  粉煤灰含量

20/40%

25%


     - TEST REPORT (more detail)