CSA cement, also named calcium sulpho aluminate cement with the following grade: 525(42.5), 725(62.5), 825(72.5), 925(82.5). CSA cement has the advantages of rapid hardening, high-strength, freeze resistance, impermeability, adjustable setting time, good fluidity, corrosion resistance, low ph value, low dry shrinkage and so on.CSA cement can be used for preparing anti-permeability, anti-freezing and sulfate resistance concrete. It is also used in construction in winter, injecting slurry, consolidation, rush to repair, leak stopping, complex geology small caliber running cementing, big prefabricated concrete structure, cast-in-place frame structure projects. It is specially used for producing glass fiber cement composite products, cement pipe, cement pole and man-made marble products. In engineering can cause multiples increase to output and economic value.
The technical data of CSA Cement is as follows:
Specification:
1. Specific Surface Area: 350m2/kg Min
2. Setting Time:
Setting time: initial setting is not early than 25 minutes, final setting is not later than 3 hours. (It can be adjusted according to customer's requirement)
3. Compressive Strength (MPa, Min):
Grade 525(42.5): 30(1d), 42.5(3d)
Grade 725(62.5): 50(1d), 62.5(3d)
Grade 825(72.5): 55(1d), 72.5(3d)
Grade 925(82.5): 60(1d), 82.5(3d)
4. Breaking Strength (MPa, Min):
Grade 525(42.5): 6.0(1d), 6.5(3d)
Grade 725(62.5): 7.0(1d), 7.5(3d)
Grade 825(72.5): 7.5(1d), 8.0(3d)
Grade 925(82.5): 8.0(1d), 9.0(3d)
CSA Cement Characteristics
1. Early high strength
Under standard condition, it's plastic mortar compressive strength of 12 hours can reach 30-40MPa, of 3 days can reach the grade strength. The concrete that prepared by CSA cement, when the water cement ratio is 0.5-0.6, the compressive strength of 6 hours under normal temperature can reach 5-10MPa while of 12 hours can reach above 20Mpa. Its early strength promotion rate over exceed rapid setting Portland cement. It's hydrate exothermic reaction develops with strength, centralize on early period.
2 . Rapid setting time
Under standard consistence water consumption, the initial setting is not early than 25 minutes, final setting is not later than 3 hours.Csa cement is obvious to see the setting time is quick. When prepare high early strength concrete, due to the water cement ratio is much bigger than standard consistence, initial setting of high early strength concrete is above 2-3 hours even at normal temperature. It can completely meet construction requirement.
3.Tiny expansion and low shrinkage
It produces crystal ettringite at early hydrate reaction. Crystal ettringite causes concrete have volume expansion. When preserving in water, Early strength cement present expansion property without restriction.
4.Low alkali
CSA cement hydrate reaction medium's alkali rate is low, the PH value is around 10.5~11 while Portland cement hydrate reaction medium's alkali PH value is around 13.
5. Steel bar corrosion
After 7 days shaping, open the specimen of it , you will find corrosion on the surface of steel bar. But the corrosion does not develop since the following 1 ~10 months. And the weight loss rate is stable. From the recent 10 years research result for steel bar corrosion, steel bar corrosion degree is not growing with time.
6.Durability
a. Freeze-thaw resistance
b. Anti-permeability
c. resistance of heat
d. Long period strength stability
e. Corrosion resistance
We are one of the biggest cement suppliers in China. Since 2001, we provide sulfoaluminate cement, calcium aluminates cements with good quality and competitive prices to many countries.
CSA cement: by 50kgs bag or one ton bag. Store in shady, cool and dry place. Avoid stamp and mix with other substance.
20t as minimum quantity is accepted.
If you are in market for CSA cement, please feel free to contact us.
