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What is High Alumina Cements
High Alumina Cement (HAC, sometimes known as calcium aluminate cement (CAC) or aluminous cement) is composed of calcium aluminates, unlike Portland cement which...
High Alumina Cement (HAC, sometimes known as calcium aluminate cement (CAC) or aluminous cement) is composed of calcium aluminates, unlike Portland cement which is composed of calcium silicates. It is manufactured from limestone or chalk and bauxite.
Application of High Alumina Cement
There are two distinct ways to use calcium aluminates: as high-performance binders and as mineral reagents in a variety of industries. High alumina cement concrete and high alumina refractory are two important products.
As binders, high alumina cement is used in concretes and mortars for specialized applications for their properties of resistance to corrosion, abrasion and heat combined with rapid hardening and the ease of controlling grading variations. High alumina cement concrete is a good example for this use.
High alumina refractory cement is also used in combination with other fine components. Hydraulic binders with new properties are then obtained. In this way, aluminates act as both a complex hydraulic binder and a mineral reagent interacting with the other components in the mix.
As reagents, high alumina cement is found in non-hydraulic systems. This is the case in metallurgical treatments (iron and steel industry, foundry) where specific grades of high alumina cement uses for their low-temperature melting properties and for trapping molten metal impurities.
High Alumina Cement Properties
Items/grade CA50F A600 A700 A900
SiO2 ≤8.0 ≤7.8 ≤7.5 ≤5.5
Al2O3 ≥50.0 ≥50.0 ≥51.0 ≥53.5
Fe2O3 ≤2.5 ≤2.5 ≤2.5 ≤2.5
Specific Surface Area (m2/kg) ≥300 ≥300 ≥320 ≥350
Initial Setting Time(min) ≥30 ≥45 ≥60 ≥90
Final Setting Time(h) ≤6 ≤6 ≤6 ≤6
Flexural Strength
(MPa) 1d ≥5.5 ≥6.0 ≥6.5 ≥8.0
Flexural Strength
(MPa) 3d ≥6.5 ≥7.0 ≥7.5 ≥10.0
Compressive Strength
(MPa)1d ≥40 ≥45 ≥55 ≥72
Compressive Strength
(MPa)1d ≥50 ≥55 ≥65 ≥82
High alumina cement package
by 50kgs bag. Store in shady, cool and dry place. Avoid stamp and mix with other substance. If you are in need of high performance alumina cement, please feel free to contact us for high alumina cement price.
There are many high alumina cement manufacturers, but we are one of the best choices for you.
For more information about high alumina cement initial setting time, please feel free to contact us!
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