Summary
● Low-alkalinity Calcium Sulfoaluminate Cement, also named Low-alkalinity CSA Cement, is one of hydraulic binding materials. Code No.: L·SAC.
● Low-alkalinity CSA Cement has excellent characteristics of low alkalinity, smaller free expansion, rapid setting and hardening, etc.
● Grade: 32.5, 42.5, 52.5
Technical Data
As per China GB20472-2006
● Specific Surface Area: 400m2/kg Min
● Setting Time: initial setting, 25 minutes Min; final Setting, 180 minutes Max
(Setting Time can be adjusted as per Customers’ request.)
● Alkalinity (PH Value): 10.5 Max
● Free Expansion at 28d: 0.00～0.15%
● Strength (MPa, Min)
|
Cement Grade |
Compressive Strength |
Flexural Strength |
|
1d |
7d |
1d |
7d |
|
32.5 |
25.0 |
32.5 |
3.0 |
5.0 |
|
42.5 |
30.0 |
42.5 |
4.0 |
5.5 |
|
52.5 |
40.0 |
52.5 |
4.5 |
6.0 |
Characteristics
● High early strength
● Rapid setting
● Low alkalinity
● Micro expansion
● Low shrinkage
● Low corrosion
● Small free expansion
● Resistance to frost
● Good impermeability to water
● Better durability
● Resistance to corrosion
● Ultimate fire-proof more than 1 hour
Application
● To make GRC products
● To make partition board, composite wall panel, outer hanging wall panel
● To make board insulation in out wall, out insulation compartment of composite out wall
● To make thin boards, ceiling floor, soundproof plate, ornamental plate
● To make decorative article such as Roman column, banister, balastrade, door window covering, pillar, sculpture etc.
● To make false mountain, aeration pipe
To make fruit-rind boxes ,flower basin, porcelain glazed bathtub
● To make boxed electric transformer shell, roof covering
● To make mesh roofing board, corrugated tile
● To make storehouse for grains, skeleton in greenhouses, grape trellis, fence and pier in pasture
● To make solar furnace shell, outer casing of solar water heater, methane tank
Usage
● Recommended W/C ratio: about 0.3 to 0.4
● Rate of mixing materials of concrete must be decided by the trial. Recommended quantity of cement is not less than 300kg in one CBM concrete.
● It is strictly prohibited to use low-alkalinity cement together with high alkalinity materials for example Portland cement and lime.
● After cement products start hardening, it should keep curing in wet in time.
● When construction in low temperature in winter, especially to note antifreeze and curing in heat retaining condition.
● For faster demould of cemet products, it is allowed to use type SAC-1 Rapid-setting Accelerator together with L-SAC.
● When using cement or concrete products, the environment temperature should be not more than 80 C. degree.
Storage, Transportation and Packing
● To store in dry, cool and well-ventilated environment
Stored separately with other cement kinds
● Not allow to be damped and mix other sundries when storing and transporting.
● Storage life is 3 months. If more than 3 months, it should inspect the goods again and confirm the factual grade of cement, then use it as per the real cement grade.
● Transportation: as per the common goods; classification for conveyance - not to be required; not to allow the packages to be fallen down or damaged
● Packing: 50kgs bag, and / or jumbo bag
