Grey Ordinary Portland Cement 42.5

Specification:

Grade: Ordinary portland cement 32.5R(china standard GB175-2007)
Product range: P. C 32.5/32.5R, P. O 42.5/42.5R, P. O 52.5/52.5R.
Standard; Chinese GB175-2007/ASTM/EN
Packing: 50kg PP Bag*40+2 MT jumbo SACK
CHINA STANDARD GB175-2007 P. O 42.5

Items/ Indexes National Standard
Cement MgO (%)<6.0
Cement SO 3 (%)<3.5
Cement loss on ignition (%)<5.0
Cement fineness (%)<10.0
Setting time (min)>45
Final setting time (min)<600
Strength(MPa)
3-day compressive strength>22.0
3-day bending strength >4.0
28-day bending strength >6.5
28-day compressive strength >42.5

Application:

The most common use for Portland cement is in the production of concrete. Concrete is a composite material consisting of aggregate (gravel andsand), cement, and water. As a construction material, concrete can be cast in almost any shape desired, and once hardened, can become a structural (load bearing) element.
Users may be involved in the fas panels, beams, road furniture, or may make cast-in situ concrete such as building superstructures, roads, dams. These may be supplied with concrete mixed on site, or may be provided with "ready-mixed" concrete made at permanent mixing sites. Portland cement is also used in mortars (with sand and water only) for plasters and screeds, and in grouts(cement/water mixes squeezed into gaps to consolidate foundations, road-beds, etc. ).