Ecopozz pozzolan types They are silica or silica-alumina materials which are concretes themselves that have no adhesion value or low adhesion value, but in the form of very fine particles, react at normal temperatures in the presence of moisture with calcium hydroxide and produce compounds that structure They are somewhat similar to the compounds produced by the extraction of Portland cement. There are two types of pozzolans. Contact us to buy them.
What are different Ecopozz pozzolan types ?
types of natural pozzolans Includes diatomaceous earths, opal shales and slums, glass tuffs, volcanic ash, and natural rock pumice. It is cooled so that the silica in it is not crystallized, as well as other materials such as some shale clays that require calcination operations for pozzolanic properties, such as metakaolin.Metakaolin is obtained from the calcination of kaolin and is used in conjunction with silicate-alkaline reactions. There are large reserves of natural pozzolans in different parts of the country, including Jajroud terrace, Haraz rock dam (Damavand), Sahand rock ridge and Taftan rock ridge. If these pozzolanes are mixed with Portland cement in a circular motion, calcium hydroxide, which is the product of the adsorption of cement in the presence of moisture, forms calcium silicate with this crystallized silica at ambient temperature, and calcium silicate is the main adhesive of all water mortars.
Purchasing various Ecopozz pozzolan types
Raw or calcined natural pozzolans, which mainly contain non-crystalline volcanic ash. The Iranian National Standard describes natural pozzolans as follows: “Diatomaceous earth, opal shale and nap, glass tuffs, volcanic ash and natural rock pumice are examples of different types of pozzolans, each of which Used calcined or not. Some clays and shales also have acceptable pozzolanic properties after calcination.
Synthetic or industrial pozzolans that mainly contain fly ash and silica fume and rice husk ash. In the National Standard of Iran, fly ash is defined as a very soft residue that is the result of the combustion of powdered or ground coal, which is transferred out of the boiler by flue gases.
The use of Portland pozzolanic and Portland pozzolanic cements is well known and Portland pozzolanic cement can be more commonly used in construction projects, especially in mild and warm seasons, but its use in very cold and cold seasons is not recommended. Also, its use in the manufacture of prefabricated and prestressed parts that require a lot of initial strength does not seem correct. It is obvious that the use of special pozzolanic Portland cements is recommended in special works such as concrete dams and bulk concretes and its use is not generally relevant in construction works for the construction of main concretes, but for the construction of building mortars, It is especially preferred over the use of Portland cements.
It is also possible to use Portland pozzolanic or Portland pozzolanic special cylinders in the construction of surface concrete with environmental conditions in the Caspian Sea, Persian Gulf and Oman Sea, observing other items mentioned in the concrete base regulations in Persian environmental conditions.
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