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CAL - HISTORY

The lime is probably the first product of chemical reaction known to man. Likewise is the oldest cement is known and which are fine examples.

The abundance of limestone in the earth's crust and its ease of transformation into calcium oxide explains why the lime is one of the older products of chemistry. Lime has many features that make quite valuable
With lime works were built that are surprisingly resistant to the passage of time: The Pyramids of Egypt, the Great Wall of China, the Colosseum and the Via Appia and others;

Some of the most recent evidence of use Lime dating back 10,000 years. Excavations at Cajenu in eastern Turkey, discovered terrazzo floors, which had been covered with lime mortar. This site dates from 7,000 to 14.000 years
However, there is firm evidence of the use of lime in the Near East, dating from about 8.000 years
Lime stabilization was used in Tibet, about 5,000 years ago , construction Shersi the pyramids. Dog was also used along the limestone by the Egyptians in building the pyramids and the Chinese when they built the Great Wall.

1.000 About DC there is evidence of widespread use of quicklime and hydrated lime for construction by many civilizations including the Greeks, Egyptians, Romans, Incas, Mayans, Chinese and Indians Mogul.

ORIGINS

Limestone is a porous sedimentary rock formed by carbonates, mainly calcium carbonate. When you have a high proportion of carbonates Magnesium is known as dolomite
The limestone is highly resistant to weathering, it has enabled many sculptures and carvings of ancient buildings in these rocks have survived.
Its hardness is 3, can be estimated by testing their resistance to being scratched

CAL IS

"Cal" is a generic term for all physical forms that can appear in the Calcium Oxide (CaO) and magnesium (MgO) and / or Calcium Hydroxide (Ca (OH) 2) and / or magnesium (Mg (OH) 2).
common name of calcium carbonate. CaO 56%, 44% CaCO3 CO2

PROCESS

By calcination or decomposition of the limestone by heating to temperatures above 900 ° C is obtained called quicklime, composed mainly of calcium oxide.
in lime

PRESENTATION

Presented in resistant kraft paper sacks with two leaves containing approximately 15 kilograms.
In our kilos and sold in plastic bags

APPLICATIONS

Hydrated lime for treating water for human consumption is in our oldest application of the product. It is used for water softening, either alone or with the help of coagulants to produce a precipitate to assist in the clarification of water, removing bacteria and the removal of hardness. The lime serves as a chemical reagent in water softening. The useful constituent Lime is calcium oxide content of quicklime, hydrated lime can react with other chemical agents were added. In addition to the lime softening water is useful for clarification.

LIMESTONE
used with great success in livestock mineral supplement in animal feed, providing the calcium necessary for animal development

HYDRATED LIME is this, calcium, dolomitic or magnesian, improves the adhesion of asphalt aggregates, which reduces the risk of moisture damage, reduces time-hardening chemical stabilization of the compounds polar found on the asphalt and increases the initial stiffness of asphalt mixtures. OTHER USES

- Manufacture of mortars, plasters, indoor and outdoor placement Casings and floor-tile-coated-neutralization and stabilization of soil
CAL TYPES OF ITS COMPOSITION *

is dolomitic lime also referred to as lime or lime lean gray. Lime is a plane with a magnesium oxide content higher than 5%. When off, forming a gray paste, a little stuck, does not meet a satisfactory standard for use in construction.
* CAL FAT
air is lime containing a maximum of 5% magnesium oxide. After giving off a fine paste, tied, soft and oily. TYPES OF CAL

If we take into account the nature of the lime can distinguish between:
CAL HYDRAULICS: Cales mixture consisting of clay loam and silica-rich aluminum and iron, which hardens in contact with both air and in water.
CAL AIR: Cales consisting mainly of calcium oxide or hydroxide carbonation hardening by exposure to air. In turn, speaking of pure lime can distinguish between:
Cal Viva: Consisting mainly with calcium oxide and magnesium produced by calcination of limestone and / or dolomite. These Tien which an exothermic reaction in contact with him water. If puedo present in different size.
hydrated lime: What results from the controlled shutdown of whom live. Occur in the form of dry powder, the mass de Leche.
NORMATIVIDAD
• NTP 334.145:2004
them. What to albañil hydrated. Requirements. • NTP
334.149:2004 which
. Hydrated lime for finishing. Requirements. • NTP
339.003:1979
What hydrated hydraulic construction. • NTP
334.141:2004 which
. Specifications
standard for hydraulic hydrated lime for structural purposes. • NTP 334.111:2001

LIME AND LIMESTONE. Definitions and nomenclature
• NTP 339.004:1979
building limes. Methods of physical tests. Different types
standard limes are produced by the following companies: Cemento Andino SA, Cemento Pacasmayo SAA, Yura SA and SA Limestone Aggregates company
Peruvian technical standards are antecedent to the respective ASTM standards.