Глиноземистый Цемент ГЦ

Alumina cement

Place of shipment: China
Al2O3: 30-50
CaO: 35-45%
Fe2О3:5-15%
Refractoriness: ≥1580°С
Certification: ISO9001/ISO14001/ISO45001/ISO50001

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Description of aluminous cement

Aluminate cement, also known as aluminous cement or aluminate cement, is a special type of cement that has high strength and chemical resistance. Aluminous cement GC is a fast-acting hydraulic mixture, the main distinguishing feature of which is the ability to quickly harden in water and air. It is suitable for the manufacture of products that require resistance to high temperatures. Cement GC can be used to prepare special heat-resistant concrete. The cement is characterized by an extremely high level of fire resistance - according to experts, monoliths made from such a solution can be used at temperatures up to +1700 C. Kerui Refractory offers high-quality Aluminous cement ГЦ-40, ГЦ-50, ГЦ - 60.

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Characteristics of aluminous cement

Chemical composition of aluminous cement

Characteristics of alumina cement

Name	Alumina cement
Al2O3, %	35-55
CaO, %	35-45
Fe2О3, %	5-15
SiO2, %	5-15

Name of indicator	Meaning for cement grade
	ГЦ-40	ГЦ-50	ГЦ-60
1. Compressive strength, MPa, not less than,
1 сут	22,5	27,4	32,4
3 сут	40,0	50,0	60,0
2. Grinding fineness:
residue on a sieve with mesh No. 008 according to GOST 6613, % not more than	10	10	10
3. Setting times:
start, min, no earlier than	45	45	45
end, no later than	10	10	10

Characteristics of cement CA40/41

Mark	CA40			CA41
-	Standard		Typical range	Standard	Typical range
Chemical composition(%)
Al₂O₃	37.0-41.0		>37.0	43.0-48.0	>43.0
CaO	36.0-40.0		<41.0	35.0-38.0	<40.0
SiO₂	-		<6.0	-	<7.0
Fe₂O₃	13.0-17.0		<18.0	4.0-9.0	<10.0
MgO	-		<1.5	-	<1.5
TiO₂	-		<3.0	-	<3.0
R₂O	-		<0.5	-	<0.5
S	-		<0.1	-	<0.1
CL-	-		<0.06	-	<0.06
Fineness
+45μm(%)	-		<15.0	-	<15.0
S(m2/kg)	350-400		>300	350-400	>300
Setting time (min)
Start of IS setting	60-130		>45	100-180	>90
Конец схватывания FS	100-180		<240	120-200	<300
Прочность на изгиб(МПа)
6h	-		>4.0	-	>4.0
1d	-		>5.0	-	>6.0
3d	-		>6.0	-	>6.5
Прочность на сжатие (МПа)
через 6 часов	-		>30	-	-
через сутки	50-55		>50	55-60	>55
через 3 суток	55-65		>55	60-70	>60
Technological efficiency (Spread after 15 minutes) (%)	-		>30	-	>50
Refractoriness (℃)	-		1270℃	-	1310℃
Bulk weight (kg/m3)	-	900-1000		-	900-1000
Specific weight (g/m3)	-	2.9-3.1		-	2.9-3.1

Advantages of alumina cement

Corrosion resistance

Alumina cement has good resistance to corrosion, especially when in contact with sea water. Therefore, it can be used in the construction of port facilities, berths and other objects that are exposed to water.

Chemical resistance

Alumina cement has chemical resistance to aggressive environments such as acids, alkalis and other chemical compounds. Therefore, it is often used in industrial buildings such as chemical processing plants.

Fast curing

Alumina cement hardens faster than regular Portland cement. This allows for faster construction and reduced waiting time for further work, increasing efficiency.

High temperature resistance

Alumina cement has high heat resistance, which makes it suitable for use in high temperature conditions, such as in the construction of furnaces, fireplaces and thermal power plants and so on.

High strength

Alumina Cement has high strength. Excellent indicators are explained by the content of calcium aluminates. The process of gaining strength is accompanied by the release of a large amount of thermal energy.

Application of Alumina Cement

For the production of concrete and reinforced concrete structures.
For the construction of marine and underground structures where increased sulfate resistance is required.
For plugging cold oil wells, plugging cracks in rocks with high water flow rates.
For sealing holes in sea transport vessels.
For the rapid construction of foundations for machines, pouring anchor bolts, restoring damaged buildings and bridges.
For the production of precast concrete products in reinforced concrete plants and construction sites, where aluminous cement acts as a concrete hardening accelerator.
For the production of containers and other structures where aluminous cement provides increased resistance to organic acids, sulfur compounds, sulfuric acid, lactic acid, saline solution, and starch.
For the production of refractory concrete and individual products with fire resistance up to 1700 gr. C.

Kerui Refractory Product Certification

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