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Calcium Aluminate Cement

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Calcium Aluminate Cement Specification

Soundness
Stable

Weight
25 Kg, 50 Kg

SO3 %
0.5%

MgO %
1.0%

Compressive Strength
50 MPa

Bending Strength
8 MPa

Application
Refractory Castables, High Strength Concrete, Industrial Flooring

Fineness
350 m/kg

Color
Grayish White

Initial Setting Time
90 minutes

Cement Raw Material
Alumina & Calcium Oxide

Cement Type
Calcium Aluminate Cement

Sand Type
Quartz Sand

Sand Fineness
Fine

Natural Sand Type
Quartz

Hardening Feature
Fast Setting, Early Strength

Heat of Hydration
High

Product Strength Grade
CA50

Feature
Rapid Hardening, High Temperature Resistance

About Calcium Aluminate Cement

Calcium Aluminate Cement

Technical Specification :

High Alumina Cement CA-50

Index Properties			Unit	A600	A700	G9
Chemical composition	AI₂O₃		%	50-60	50-60	53.5 max
	CaO		%	33min	33min	33.00 min
	SiO₂		%	8.00 max	8.00 max	5.50 max
	Fe₂O₃		%	2.50 max	2.50 max	2.50 max
	Ro₂		%	0.4 max	0.4 max	0.40 max
Specific Surface Aea			Cm³/ g	3000 max	3000 max	350 min
Beginning Set			min	60min	60min	90 min
Ending Set			h	6max	6 max	6 min
Bending Strength		1 day	Mpa	5.50 max	7.00 min	8.00 min
Bending Strength		3 day	Mpa	6.50 max	8.00 min	10.00 min
Compressive Strength		1 day	Mpa	40.00 max	50.00 min	72.00 min
Compressive Strength		3 day	Mpa	50.00 max	60.00 min	82.00 min
Refractories			^oC	1350	1350	1450

Calcium Alumina Cement

Items			Unit	C-70	CA-80
Chemical composition	AI₂O₃		%	68.50-72.00	78.50-81.00
	CaO		%	28.0-31.50	17.00-20.00
	SiO₂		%	< 0.50	< 0.40
	Fe₂O₃		%	< 0.50	< 0.30
	K₂O+Na₂O		%	< 0.50
Specific Surface Aea			Cm2/g	> 5000	> 700
Beginning Set			min	> 45	> 30
Ending Set			h	< 6	< 6
Bending Strength		24 H	Mpa	> 7.0	> 5.50
Compressive Strength		24 H	Mpa	> 45	> 40
Refractories			^oC	> 1600	> 1790

Exceptional Performance and Rapid Hardening

CA50 Calcium Aluminate Cement demonstrates fast setting and early strength development, making it perfect for refractory, high-strength concrete, and rapid industrial repairs. Its heat-resistant formulation and high compressive strength ensure long-lasting performance in severe conditions.

Quality Packaging and Reliable Storage Life

Available in robust 25 kg and 50 kg HDPE laminated bags, the cement is protected from moisture and contaminants. With a storage life of six months under proper conditions, users can rely on long-term usability and minimal waste.

Versatile Industrial Uses and Benefits

Engineered from alumina and calcium oxide, CA50 is compatible with quartz sand for enhanced durability. It is widely applied in refractory castables, industrial flooring, and high-temperature environments, providing quick turnaround and dependable results.

FAQs of Calcium Aluminate Cement:

Q: How should Calcium Aluminate Cement CA50 be mixed for optimal performance?

A: Mix CA50 with clean water at a ratio of 2224% by weight, and combine it thoroughly with fine quartz sand for uniform consistency. Use within the initial setting time of 90 minutes, and complete all finishing within five hours for best results.

Q: What are the main applications for this Calcium Aluminate Cement?

A: This cement is primarily used in refractory castables, high-strength concrete, and industrial flooring. Its rapid hardening and high-temperature resistance make it suitable for furnaces, thermal plants, fast repairs, and heavy-duty surfaces.

Q: When is Calcium Aluminate Cement preferred over Ordinary Portland Cement?

A: CA50 is chosen when projects require rapid strength gain, high temperature resistance, or early setting. This is especially important in time-sensitive repairs, refractory linings, or components exposed to extreme conditions.

Q: Where can I store the cement and what is its storage life?

A: Store the cement in its original HDPE laminated bags in a dry, shaded area, away from moisture and direct sunlight. The storage life is six months from the date of packaging under proper conditions.

Q: What are the benefits of using this cement in refractory applications?

A: The high Al2O3 content and stability of CA50 cement ensure excellent heat resistance, rapid hardening, and robust early strength. This minimizes downtime and enhances safety and longevity in kiln and furnace linings.

Q: How does the fineness and grain size affect cement performance?

A: With a fineness of 350 m/kg and maximum grain size of 0.09 mm, the cement hydrates quickly, promotes uniform mixing, enhances compressive strength, and supports rapid hardening for superior finished products.

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