High Alumina Cement




High Alumina Cement is manufactured by grinding the clinkers of alumina and calcareous material such as lime by fusing or sintering process. It was made to protect against chemical attacks and earlier it was used for marine structure. It is easy to produce and gain rapid strength therefore its usage has been increased.

Manufacturing process of High alumina cement is different than others. Bauxite and lime are the raw material. This raw materials are mixed in the in the required proportion and grinded into small fragments of 100 mm. Then this lump should be heated up at about 1600 °C in kiln. The molten material fall down on the steel plate and it is send to cool down in rotary kiln.  
     
Characteristic of High Alumina Cement

Ø  It is very resistant to chemical attack.
Ø  pH level is low.
Ø  It is high resistance to chemical corrosion.
Ø  It has a high durability in sulphuric acid.
Ø  Hardening property of this cement is fast.

Uses of High Alumina Cement

Ø  It is widely used in marine construction and sewer infrastructure as it has the property of gaining strength rapidly.
Ø  It also used in refractory concrete where high temperature is required.
Ø  Advantages of High Alumina Cement
Ø  It take more time to mix and place as it has more setting time.
Ø  It can withstand high temperature.
Ø  It is very reactive and has a very high compressive strength.
Ø  It has a good resistance against fire.

Disadvantages of High Alumina Cement

Ø  Manufacturing cost of this cement is high as for the manufacture of this cement, more heat is required.
Ø  It is very fine so care should be taken that it it doesn’t come in contact with human eye or mouth.
Ø  As the heat evolution while setting is high, it cannot be used in mass concreting works.

--------------------------------------------------------------------------------------------------------

Like us on Facebook :- https://www.facebook.com/SanghiCement

Follow us on Linkedin :- https://www.linkedin.com/company/sanghi-industries-ltd

Subscribe us on Youtube :- https://www.youtube.com/SanghiIndustries-Ltd

For any Inquiry visit :- http://www.sanghicement.com/inquiry-form

Contact us on Whatsapp :- +91-79-26838000

--------------------------------------------------------------------------------------------------------


Blog written by

Shruti Doshi
Technical Officer – Sanghi Cement & Blogger
shruti.doshi@sanghicement.com
shrutidoshi.1492@gmail.com

Blog Managed by
Nirav Pandya
Digital Marketing Officer – Sanghi Cement
nirav.pandya@sanghicement.com




Comments

Post a Comment

Popular posts from this blog

Coarse Aggregate and its effects in Mix Design of Concrete

Image
Coarse aggregates are one of the main components of mix design and it has a large volume in mix design of concrete. That is why it greatly af fects the concrete mix design. Its property like strength, size, shape, water absorption capacity influence the demand of water, cement and fine aggregates in mix design. High maximum coarse aggregate size will provide lower demand of water because this aggregate has lower surface area compare to small aggregate size. Rounded shaped aggregates provide economical mix design for normal concrete. Angular coarse aggregates are used in high strength concrete. Higher aggregate strength would produce higher concrete strength. Maximum size of coarse aggregate will give the idea about water demand and quantity of fine aggregate in mix design. It will improve workability. Higher maximum size of aggregate lower the surface area and lower aggregate provides large surface area. If surface area is more water demand is higher and surface area i
Read more

Uses of Rice Husk Ash in Building Construction

Image
Rice husk ash can be used as a substitute for Portland cement which reduces the cost of concrete and other use is that it can be used in production of high strength concrete. There are many applications of rice husk ash in the construction such as high-performance concrete, insulation, green concrete, bathroom floors, industrial factory floorings, waterproofing and rehabilitation, and it is also used ceramic glaze and roofing shingles. Applications of Rice Husk Ash in Building Constructions Low cost building blocks When low cost building is constructed, rice husk ash is used instead cement. As cement is expansive component of concrete and for low cost building it is not affordable to use so rice husk came in picture. It is demonstrated that, replacing 50% cement with rice husk ash would reduce cost of concrete by 25%.An Indonesian company has used mix proportion of 10% cement, 50% aggregate and 40% RHA plus water to produce blocks. The average strength of the block
Read more

Ultra High Performance Concrete

Image
This concrete has minimum strength of MPa. It has a great durability. C ommonly, the UHPC consists of cement, silica fume, fine quartz sand, high range water reducing admixtures, steel fibers, and low water to cementitious materials ranging from 0.15 to 0.25. Durability of this concrete is superior compared to ordinary concrete as its pores are discontinuous, which declines liquid penetration. UHPC is used to improve concrete homogeneity through the removal of coarse aggregate in the mixture. It does better gradation and mixture between the main components so that voids are reduced thus density increases. Steel fibres are added to the mixture to avoid brittleness of concrete. Main components in UHPC are Portland cement, Silica Fume, Limestone and or quartz flour, Fine sand, High-range water reducers, Water and Steel fibres. Compressive strength of UHPC is ten times higher than ordinary concrete. Tensile strength of about 10 MPa. UHPC has properties similar to hard r
Read more