coquina

coquina material (coquina) - stone of natural origin.It formed as a result of natural compaction of mollusk shells, debris together with limestone and sand.Obtained by sawing blocks of solid rock.It is used mainly for the construction of houses, outbuildings, garages, fences.It has a porous structure defining its high thermal and acoustic insulation.

Harvest it in Dagestan, Kyrgyzstan, Azerbaijan.However, the most significant of its deposits have been explored in the Crimea.Therefore Crimean coquina is most common in the construction industry.

Stamps shell and their application

There are several blocks of limestone brands: M15, M25, M35.They differ in density, therefore, used in construction for different purposes.For example, the least durable mark M15, used for the construction of walls that will not carry a heavy load, most often used to create walls, fences.

Coquina M25 grade used for the construction of one- and two-storey buildings.An analogue of the brand M35 is suitable for multi-storey buildings.Its specific strength is fairly high, so it is additionally used for the construction of foundations, ground and basement floors.In the above photo you can see the difference between pictures of different brands: the main difference is the product of their structure (low / high porosity).

Specifications shell

standard block size is 390h190h190 mm with a tolerance of about 10 mm.Weight blocks from 9 up to 25 kg.

General characteristics for different types of building materials are virtually identical:

• frost: 25-30 cycles;
• conductivity: 0.30 to 0.80 W / m · K;
• porosity: 30-60%;
• water absorption: 17%;
• density: 2100 kg / m3.

Due to the above parameters coquina limestone considered warmer than the cinder block or aerated concrete.Coquina has no artificial analogues, therefore, it is a unique natural material for building houses and households.buildings.

Benefits

Natural composition shell makes it indispensable for the construction of high quality houses and cottages.It is applicable for the construction of buildings, and for walls, perfect for roof / attic floor.A wide range of use and excellent performance characteristics - are not the only advantages of the material.Other benefits include:

• Easy cutting, processing (eg, to create arched openings).
• possibility of using balances to create a landscape design (fountains, streams dry).
• high vapor permeability (prevents the formation of mold and mildew in the house).
• Good teplosohrannost, eliminating the need for additional insulation.
• optimal price compared to similar construction materials.

viewing a video on the processing or grinding limestone can be seen in the simplicity of its use.It is worth remembering and about creating a healthy atmosphere in the building during the construction of the shell, in the elements (clams, mussels), which contains a certain percentage of iodine and salt.

Disadvantages

It should take into account the disadvantages of the material, namely:

• need to protect from excessive moisture;
• neat transportation and storage;

Despite some drawbacks, construction reviews, to build houses of limestone for the most part positive.Subject to the basic requirements of the application of raw materials, will not be difficult to build a safe, warm home with a unique atmosphere.

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