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||9/18/19 0:53 GMT
Calcium Aluminate Cement
Description of Calcium aluminate cement
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Calcium aluminate cement, alumina cements or high alumina cements are obtained
by the reaction at high temperature of lime (from limestone) and alumina
(contained in natural minerals like bauxite). The product obtained after
cooling is a hard mineral: calcium aluminate clinker. Ground into a fine
powder, the clinker becomes calcium aluminate cement (CAC) which forms a paste
when mixed with water. This has the ability to harden very quickly: it forms a
rigid solid within 24 hours.
Application of calcium aluminate cement
There are two distinct ways to use calcium aluminates: as high-
performance binders and as mineral reagents in a variety of industries.
As binders, calcium aluminates are 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
Calcium aluminate cements are 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, calcium aluminates are found in non-hydraulic systems. This is
the case in metallurgical treatments (iron and steel industry, foundry) where
specific grades of calcium aluminate are used for their low-temperature melting
properties and for trapping molten metal impurities.
Calcium Aluminate Cement Construction method:
1. When preparing refractory concrete, fix on the aggregate according to using
condition. Choose the proper capacity graduation to make maximum density. Be
noted to match and adapt with cementing material.
2. According to certain proportion, add water and mix by man or machine into
mortar and then begin casting construction. Use up the ready mortar within 40
min. Calcium Aluminate Cement’s hydration heat concentrate on early stage.
Casting thickness should not exceed 3 cm each time. Water curing immediately
when concrete goes hardening and the curing time should not less than 3 days.
3. When prepare expanding cement, Calcium Aluminate clinker’s dosage is 73-
76%, CaSO4·2H2O dosage is 24-27%. When prepare self-stressing cement, the
mixing ratio of CaSO4·2H2O should be increased.
Calcium Aluminate Cement Notice:
1. In order to avoid uncontrollable setting time, do not mix with Portland
cement, lime etc of which separate out calcium hydroxide cementing material.
Before use, clean all the mixing machinery.
2. Steam curing to accelerate concrete’s hardening. The curing temperature
should not higher than 50℃.
3. Refractory concrete’s late strength decline big, design should according to
the lowest stable strength. CA-50 bonded concrete’s lowest stable strength
should be determined by the lowest strength of 7-14 days of demoulding sample
curing in 20℃±1℃ water.
Calcium aluminate Cement Packing:
by 50kgs bag. Store in shady, cool and dry place. Avoid stamp and mix with
Where to Buy Calcium Aluminate Cement
We are professional in high alumina cement manufacturing process and produce
excellent Calcium Aluminate cement, high alumina cement and high temperature
China ca50 manufacturer, please feel free to contact us.
Oreworld trade (Tangshan) co., Ltd. has been engaged in exporting business for
about 20 years. It is a professional cement supplier. If you want to know more
details or want a quotation, just feel free to contact us!
SOURCE: Import-Export Bulletin Board (http://www.imexbb.com/)
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