In this article we will talk about the use of lime, and consider how to quench the lime correctly. Negaine lime is obtained by firing limestone or chalk.

Application of lime in construction work

• Lime is added to plaster mixes, solutions for brick masonry in order to give them strength and plasticity.
• Lime increases the water resistance of concrete.
• Thanks to its antiseptic properties, lime applies to whitewashing cellars, garages, premises containing bird or pets.
• The ceilings and walls in the apartment can be blocked by the limestone, but modern finishing materials have practically displaced the use of lime blots when repairing apartments.
• Due to its low cost, the limestone glasses are used in the entrances of houses, schools, medical institutions.
• Lime is used to whitewash trees. The whots of the trees lime protects the bark from sunburn and helps to fight various pests.

Hazeling

The device of a lime tie of the floor or plaster walls with lime solutions does not always have good results. Very often, the screed is obtained by loose, and the plaster cracks and departs from the walls. This is due to the preparation of building mixtures from poorly redeemed lime.

To give construction mixtures of necessary qualities, lime is quenched. Lime is not just poured with water - it is important to know how to quench lime correctly.
More often a limestone dough is prepared, which has a long shelf life. Already ready-made dough is used to prepare construction mixtures.

For sale, the negascinary lime goes a commercial, or crushed into powder.

With stirring of melted lime with water, the process of hydration - calcium and magnesium oxides are moving into their hydrates. The process is accompanied by highlighting a large amount of heat - the temperature reaches 150 °, part of the water turns into steam. Couple breaks out lime and turns the lumps into the powder of a shallow fraction.

Lime quenching formulas + H2O \u003d SA (OH) 2 + 65.1 kJ.

In this calcium formula, it is listed as an example, magnesium may prevail in the Negashic Lime. In this case, the formula will differ in the symbol of the chemical element. Magnesium oxide (MgO) When interacting with water, goes into magnesium hydrate (Mg (OH) 2).

Depending on the variety and the quenching rate, the lime is divided into 3 groups. The quenching time is considered from the moment the imposition of lime with water and until the moment when the mixture temperature ceases to increase.

• fasteners - Time to quench 8 -10 min,
• middle - quenching time 15-20 min
• medlenogying - quenching time for more than 25 minutes

When the lime quench is important that calcium and magnesium oxides remain in the mixture. If oxides remain - when the construction mixture is shown, the hydration process will begin, which will lead to a decrease in the quality of building mixtures.

When paving ceilings or trees, lime is sure to quit.

There will be no less than a day for complete quenching of lime. Lime is quenched within 24 hours, but it is better to extend the process to 36 hours. Calculation of lime at home in large quantities is the process of troublesome, so it is easier to purchase a gaured lime.

On sale enters the lime of Pushonka - this is a greased lime. With the division of lime in production, technology is observed. This allows you to get high-quality extinguished lime.

How to clean lime

Operating procedure

• Put protective clothing made of tight fabric, mittens, respirator.

Negashing lime is a very caustic substance. Skin contact can cause strongest irritation.

• Push the lime into the container or box for navigation. Capacity can be used metallic, but on the surface of the container should not be rust.

• Fill with cold water in the ratio of 1 liter of water per 1 kg of rivki lime if you need to make a merton lime. For a lime test of water, two times less required.

Do not lean over the container after poured water. The distinguished couples can cause the mucous membranes and nasopharynx.

In the process of quenching, mix the lime. Lime is mixed every time after decreasing the vaporization.

Slowing lime do not pour immediately by the necessary amount of water. It is better to add small portions. When all lumps are sprinkling, throw water to the desired amount.

Quickly - and the secondary lime with a lack of water can overcome. Pour water until the vaporization is coming.

A special box is made on the site, which is covered with lime and poured with water. The box is installed on a dummy pit depth 1-15, m, depending on the volume.

Negshina lime falls asleep in the box. Water water from the watering can. The mixture is stirred by robbles. After the reaction passes, the valve opens and the fastened lime flows onto a sieve through which focusing in the pit.

When preparing lime for masonry, extinguished lime should be withstanding at least two weeks.

If you plan to use lime for plastering - the term will need more - at least a month.

When using lime for planing, 2 liters of water are taken for 1 kg of lime. After quenching, the lime is divorced by water to the desired viscosity. Defended over two days. Then flickering. A brush is applied to the surface or with a collapse.

For whitewings, water trees need 4 times more than lime. Lime falls asleep in the container, poured with water and mixed. Let it stand for about two days. Lime-made whitewash brush.

Lime is quenched and for spraying the garden from pests. At the same time, the mixture is preparing two hours before the treatment of the tree or shrub, the spraying is filtered. Lime is quenched in a large amount of water, after settling, the copper cunery is added to the solution.

The video is well shown how the rapid process is to quench the lime.