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Презентация, доклад на английском языке История растворов и инструментов для студентов строительных специальностей.
Содержание
- 1. Презентация на английском языке История растворов и инструментов для студентов строительных специальностей.
- 2. HISTORY OF SOLUTIONS
- 3. Слайд 3
- 4. BITUMENBitumen is the most ancient construction and
- 5. BITUMENAncient people made waterproof tableware from bitumen
- 6. INSULATION BY BITUMEN
- 7. BITUMENNatural bitumen was often used as binding
- 8. PLASTEREgyptians used plaster as a solution for fastening. Greeks and Romans originally worked with oxide calcium.
- 9. CEMENTAn early version of cement made with
- 10. MAJESTIC TEMPLES AND MONUMENTS
- 11. MAJESTIC TEMPLES AND MONUMENTS
- 12. CEMENTConcrete made from such mixtures was used
- 13. CEMENTThey used both natural and artificial pozzolans (ground brick or pottery) in these concretes.
- 14. CEMENTThe huge dome of the Pantheon in Rome is an example of ancient
- 15. CEMENTThe Assyrians and Babylonians used clay as
- 16. CEMENTIn 1756, British engineer, John Smeaton made
- 17. CEMENTIn 1824, English inventor, Joseph Aspdin invented
- 18. CEMENTJoseph Aspdin created the first true artificial
- 19. TOOLS FROM METALMany things are made by
- 20. TOOLS FROM METALBuilders used an axe, a
- 21. axekniveschiselsaw1files scraperMATCH THE NAME TO THE PICTURE24356136254
- 22. REVISION
- 23. CHECK YOURSELF
- 24. THANK YOU FOR YOUR WORK!
HISTORY OF SOLUTIONS Various materials are used as a solution for fastening.Masters in Mesopotamia applied resin substance – bitumen.
Слайд 2 HISTORY OF SOLUTIONS
Various
materials are used as a solution for fastening.
Masters in Mesopotamia applied resin substance – bitumen.
Masters in Mesopotamia applied resin substance – bitumen.
Слайд 4BITUMEN
Bitumen is the most ancient construction and finishing material.
The ancient man
had known about properties of natural bitumen in the Neolithic era.
Слайд 5BITUMEN
Ancient people made waterproof tableware from bitumen and used it for
insulation of rather rare wood for Mesopotamia.
Слайд 7BITUMEN
Natural bitumen was often used as binding substance by creation of
mosaics.
In Ancient Egypt bitumen was used for mummification.
In Ancient Egypt bitumen was used for mummification.
Слайд 8PLASTER
Egyptians used plaster as a solution for fastening.
Greeks and Romans
originally worked with oxide calcium.
Слайд 9CEMENT
An early version of cement made with lime, sand, and gravel
was used in Mesopotamia in the third millennium B.C. and later in Egypt.
It is uncertain where it was first discovered that a combination of hydrated non-hydraulic lime and a pozzolan produces a hydraulic mixture.
It is uncertain where it was first discovered that a combination of hydrated non-hydraulic lime and a pozzolan produces a hydraulic mixture.
Слайд 12CEMENT
Concrete made from such mixtures was used by the Ancient Macedonians and three
centuries later on a large scale by Roman engineers.
Слайд 13CEMENT
They used both natural and artificial pozzolans (ground brick or pottery)
in these concretes.
Слайд 14CEMENT
The huge dome of the Pantheon in Rome is an example of ancient structures made from these
concretes, many of which are still standing.
Слайд 15CEMENT
The Assyrians and Babylonians used clay as the bonding substance or
cement.
The Egyptians used lime and gypsum cement.
The Egyptians used lime and gypsum cement.
Слайд 16CEMENT
In 1756, British engineer, John Smeaton made the first modern concrete
(hydraulic cement) by adding pebbles as a coarse aggregate and mixing powered brick into the cement.
Слайд 17CEMENT
In 1824, English inventor, Joseph Aspdin invented Portland Cement, which has
remained the dominant cement used in concrete production.
Слайд 18CEMENT
Joseph Aspdin created the first true artificial cement by burning ground
limestone and clay together.
The burning process changed the chemical properties of the materials.
The burning process changed the chemical properties of the materials.
Слайд 19TOOLS FROM METAL
Many things are made by metal tools.
Metal tools allow
cutting, squaring and polishing a stone.
Слайд 20TOOLS FROM METAL
Builders used an axe, a saw and a chisel
many years ago.
They could cut the big trees and split them.
They could cut the big trees and split them.
