Main Type of cement - Wide Study

Portland cement

Sulphate resisting cement

Ordinary cement used in construction is more susceptible to attack of sulphate. Hydrates of calcium aluminium and calcium hydroxide present in ordinary cement, which reacts with sulphate ion and produce calcium aluminate and calcium sulphate respectively. This reaction results in expansion of cement paste that leads a disruption of set concrete. Only one solution of this problem is to use sulphate resisting cement. Sulphate resisting cement contains less than 5% tricalcium aluminate, which makes it more resistant to sulphate attack. So to make a pizza oven using of sulphate resisting cement is highly recommended.

White Cement

There are several ordinary cements in market and white cement is one of ordinary cements used in construction work. White cement is normally prepared from raw materials free from iron oxides, chromium, and manganese. Instead of coal, oil fuel is used for burning of white cement. White cement is normally used for plaster work, floor finish, and ornamental work. To improve your pizza oven with any adornment you can use white cement. It takes more than 30 minutes as setting time. The cost of this cement is quite more than ordinary cement for its manufacturing process and extra criteria. The miscellaneous use of white cement makes it more popular cementing agent used in contraction including making pizza oven. If you want to fix some marbles on your pizza oven, you can use this cement specially.

Rapid hardening cement

The setting time of this cement is just same to Portland pozzolana cement. But it imparts high strength than other ordinary cements in early period of construction. This cement contains more tricalcium silicate and sometimes the amount is more than 56%. This amount of tricalcium silicate makes cement more fine grinding than other ordinary cement. Just it is quite costly for its manufacturing process and composition. In contraction work including pizza oven this cement is used widely for some extra-ordinary features as follows:

1. It sets rapidly and makes construction work rapid

2. It mortar needs to be removed which contains rapid hardening cement, it will be very easy to remove

3. It gives strength rapidly. It gives compressive strength 11.50 Pa after one day and 21 Pa after three days. Again, tensile strength will be 2 Pa after one day and 3 Pa after 3 days of construction

4. It is fine ground with light weight

5. It does not affected by moisture easily

6. As it sets quickly, in making pizza oven dome can be set up on the hearth earlier

7. Pizza oven making with this cement requires less curing (short curing period)

8. Use of rapid hardening cement allows high stress in pizza oven.

You can get this cement from any hardware shop. If you want to increase efficiency and make longer lasting pizza oven, you can use rapid hardening cement.

Ordinary Portland cement

Cement can be defined as the bonding material having cohesive & adhesive properties which makes it capable to unite the different construction materials and form the compacted assembly. Ordinary/Normal Portland cement is one of the most widely used type of Portland Cement.

The name Portland cement was given by Joseph Asp din in 1824 due to its similarity in colour and its quality when it hardens like Portland stone. Portland stone is white grey limestone in island of Portland, Dorset.

High alumina cement

High Alumina Cement is manufactured by grinding clinkers of calcining bauxite (it’s an aluminum ore) and ordinary lime. In which the total amount of alumina content should not be lesser than 32% and it should maintain the ratio by weight of alumina to the lime between 0.85 to 1.30. Currently these high alumina cement are more popular in countries like United States and United Kingdom.

Advantages of High Alumina Cement:

1. The main advantage is that it can withstand high temperatures, so that it can be used in refractories, foundries and other workshops where high temperatures are involved.

2. The initial setting time is 3 hours than compared to that of ppc cement. And the final setting time of cement is 5 hours.

3. High Alumina Cement evolve great heat when setting so that these cements can be used in colder temperatures.

4. It is highly resistant’s to even concentrate acids and thereby it is widely used in chemical industries.

5. It sets fast and it attains strength of 40 N/mm2 in just one day and 50 N/mm2 in three days.

Disadvantages of High Alumina Cement:

1. It is costly.

2. It evolves great heat and thereby it is not used in mass construction.

3. And moreover it should not get in contact with lime or ordinary PPC cement because it’s power gets reduced.