What is cement?
Water-absorbent, soft and gardi's cement binder that is essentially composed of a stone crumb compositions of calcium oxide have been cooked and the molten Silicon oxide, iron oxide and aluminiim oxide. The mortar round is capable of air in the vicinity or in zyarab with hard water while having stability in following their resistance, as well as maintain the size and distance of the following 28 days stay in the water with a minimum of 250 kg/square cm resistance is on the old mixture of rum in the crumbs and baked just micrdend of lime in this composition of the resulting concrete is mixed with water. and this building was used for concrete tasks. This type of buildings (Opus Caementitium) namidend with the words of Cementum to the mixture used in this type of building was called the order of a particular type of Cementum is the crumbs when mixed with lime powder they mix the usefulness, was made with a higher hydraulic and air with in the vicinity and was at the bottom of the hard water hardness and resistance of migrdid and was considerable. Of the remaining Petty rocks or ash from the volcano that were crushed or from volcanoes to ajrpezi petty ajrhai produced in the furnace, which is actually the same baked clay soil, have gotten in.
History ofcementresulted in:

History of cement resulted in:

Historical monuments, such as the very old are the pyramids of azmanh appeared as a human mlateha is known to some of the old. Imagine discovering that how this is mlateha have been too difficult: after discovering the fire and how it is produced, the primary human atraghgah for warming or cooking fire may have set up food. In some instances this calcareous stone or plaster boards on fire on has been kindled shall cause the limestone of krbnik anhydride were seized to be separated or gypsum powder and dhidrath as a positive development. As soon as the rain of these powders in slurry and then with a hard time and is probably your petty rocks have around chsbanideh to each other. The accuracy of this phenomenon and how to build guide about the mortar has been hydraulic materials. the purpose of the hydraulic materials type of building materials, which are in effect in the vicinity with the composition of water, hard water or air at the bottom of the water resistance and hardness are improved not decreased.

Mseri of pure gypsum mortar using micrdeh insecure have cooked. The use of baked limestone (lime mortar) in Greece and Rome dev vogue book it is pure or. or as a mixture of lime juice, with sand, bricks and broken stones, petty or volcano ash have been used. According to noted that the root word was to cement and lime production considering the history of the old time very concerned. Cement production history can be root (natural cement order) have something the compactness of lime production 
Natural drsiman of rounded stones of atshafshani volcano and ash (posolan – terrace) and to rounded with a lime shkfath this mix is used. At the beginning of a mixture of sand and stones were used and so on, and it turned out that the review with the remaining lime juice mixture in the mortar is better atshafshani. Because of this, because of the Greek island of atshafshani ash santurin soil that is located in the famous santurin in the name have been used. Now this soil is used.

Same corpus of Roman with dark colors in pozoli bmghdar and was located in the Gulf near Pozzoli Naples was found have been used. With the use of the Roman buildings, such as the Roman Pantheon mortars, Colosseum, Basilica of Constantine, the Pont du Gard in Rome and in the South of France have made time in front of the destructive factors have brought centuries of durability and foot are on the case.

Bridges ad waterways (Pont du gard) made by the occupied in southern France.

In the nineteenth century and eighteenth, time was discovering many of the phenomenon. Great attention to natural scientific phenomenon and by scientists, engineers, artists, and academics was chemist. One of the gyarsh issue of the phenomenon, and harden was mlateha. In this period of human civilization many scientists of different drkshori on the news of each other, the subject of much research in the frequency and at the same time that happened or happens in the period of any quantitative relationship between two or more of the scientist with the phenomenon of discovering and delivering on the Mullah Razi of the hydraulic properties of these cases, the mortar was in 1756 by John asmiton were multiplied, and in 1756-1830 At least six times has been discovering again.

The temple is located in Rome, the Pantheon, the 1890 years ago using natural cement mortar is made and is still standing.

John asmiton and a brief description about him:

Up to the end of the first half of the eighteenth century, the nature of the relationship between hydraulic and creation of stickiness in some micrdend material on the screen was the English engineer that a secret called John asmiton to the important properties of the compounds in the soil clay, hydraulic gyarsh and its hardening of this age-range compounds. This exploration in the year 1756 and when that he was following the find while possessing sufficient resistance against the water and stickiness, are sure to come. This is the revised version of these materials for use in marine Eddystone Lighthouse a lighthouse near adi was plimot stone.





A brief description of the stone and sea Lantern adi about it:

Asmiton evaluation of their own, which leads to the optimal hydraulic mortars seized to build the marine had been in the Lantern called "sea Lantern adi hard stone's story" is. The book has been printed in 1791.

Asmiton your mlathai in the experimental build, more compact, and consumption of each lime examples built. After they took their samples, they are under water and are then determined that the conclusion is a kind of best lime limestone called the Cook will Glamorgan win. From this analysis, it was clear that contain some limestone clay material is. This is the point of the hydraulic properties of the exploration threads head clay compounds, respectively. In fact, the above was not the cause of asmiton in the meantime ahkha types of analysis found it kind of insoluble residue with calcareous more nitric acid is, with its hydraulic bishterist. This insoluble residue of the same clay and quartz found in the limestone are used jhetn Cook lime.

In 1780 Bryan Higgins and English News from asmiton that works up to this date were not released, the limestone from the standpoint of existing carbon dioxide data and evaluated the outcome of which was that if you cook at higher temperatures and the resulting mixture of lime mortar with wood ash, mrghobteri will be achieved. In the meantime nakhalesi with clay or calcareous plaster is faster and better is glass. He picked up the same kinds of glass that today we get we called klinker.

In the year 1796, one other English people named James parker hydraulic lime cement making and other Roman name it *. This cement (lime water) of the calcareous rocks crushed Clay Cook (lime mud) and came in the same year was registered in the United Kingdom.

The first human action in the field of providing artificial mixture of clay and limestone for cement production (lime water) in France and by oica (L.J.Vicat) took place at the beginning of the nineteenth century. Oica, limestone and clay do not mix with water, then he will be the ground mixture and bake the resultant slurry. Although the result was successful, but actually made in France did not follow this procedure.

At the same time with the same thing, German scientist oica will he discover J.F.John. The German Science Association Prize for answers to questions related to the difference of various properties of lime had raised, and he was the winner of the prize in 1819. Note that he does the same thing that occurred was the slave was 68 years ago, asmiton was noticed. It means that the amount of clay in the composition: the presence of limestone concrete mortar is mrghobteri.

In the UK a aspedin this ajrchin in the name of Joseph (Joseph Aspdin) won from a mixture of limestone and baking clay (to a different ratio and slurry) at high temperature to a super cool lime water criminals. He obtained this product name Portland cement (Portland Cement) and on October 21, 1824 bthopt your akhtraai cement said.

Note that the use of the word significant is mentioned in Portland for the first time by asmiton is he attempting to register the name and the resulting product is not or.

The cause of this was the name of a conscious investment in concrete (artificial stone) from the many similarities and lime stone chips (especially in terms of color) is a limestone with the South of England and is iaftomi in Portland island. Of course, this is what is now called the cement with the Portland cement is famous are the same and are not completely.

His work was followed up by aspedin aspedin snoop. In 1843 he was successful with achieving a higher temperature to use the technique and sweat and melt half of the mode during baking, to better achieve considerable percentage of materials have been used as skins (Sintered) follows. The purpose of the smelt the same high temperatures in cooking, so that part of the material in the book is cooking smelt (MFI) in Washington. Cement made by Viliam aspedin and really better than the previous high of cement and has more resistance, respectively. The new building of the cement was used for the British Parliament




Portland cement producer registration aspedin the invention of Joseph are the preparation of cement raw material, the right gift "commemorative photograph No. by Georges shows, his fourth.


The first cement kilns by Viliam aspedin (photos below) has been constructed at the North British flite



The tasks that you need to explain that to this date, in particular by the aspedin was completely secret face was. In 1845 Charles Johnson also called personal Isaac managed to discover the effects of the high temperature to the point of sweat ursiden (getting zinter) respectively. This report should be considered in conjunction with the following concepts of Johnson is not empty of thanks:

No source information can be available to help me either. Although the aspedin was done to achieve the tasks to his titles and was not found. Because his work was completely enclosed by walls had been 6 m bartfaa and the way of entering his Office, he was just through the workshop. Although some of his colleagues were given the mode of operation is very safe but I had that series if the issue is not penetrating the secret I ojodmidasht. Was told that some of their own material, get aspedin and sini powder on it and some morphological. After that, the material of which the layer and ck in the furnace was set to head to work, and with his hands on some of these various layers is podrhai pashid. One of the secrets of this nature did not atlaai Treaty podrhai.

From this stage onwards, the second half of the nineteenth century witnessed the expansion of cement production to industrial scale, we are. A detailed assessment of the cement-making process spread under the title of the second half of the 19th century up to the beginning of the 21st century will come.