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Construction Materials Notes

Institution: Godoma Technical Training Institute

Course: Diploma in Civil Engineering and Building Technology

Content Category: Class Notes

Posted By: Akalume

Document Type: PDF

Number of Pages: 77

Price: KES 300
 
    

Views: 385     Downloads: 5

Summary

CONSTRUCTION MATERIALS.
INTRODUCTION TO MATERIALS.
The subject of engineering materials deals with the study of materials in
respect to the:
i. Sources, composition and their properties
ii. Manufacturing methods and testing
iii. Utility in the various fields of engineering and technology.
iv. Modern techniques being developed for handling and using materials to
materialize economical and design of structures and machines etc.
Classifications of Materials.
Materials are broadly classified as:
1. ENGINEERING MATERIALS
i. Civil engineering materials e.g. Stones, bricks, lime. Cement,
timber
ii. Electrical engineering materials e.g. conductor-copper, aluminum
iron etc.
Semiconductor-silicon, germanium etc. insulators-asbestos, mica
etc. magnetic materials-iron, nickel etc.
iii. Mechanical engineering materials e.g. cast iron, steel,
lubricating materials, shock absorbers.
2. METALS AND NON METALS.
Materials are subdivided into metallic and nonmetallic, metallic
materials can be subdivided into ferrous and non-ferrous materials
3. METALS AND ALLOYS, CERAMICS AND ORGANIC MATERIALS
Metals and alloys are polycrystalline bodies consisting of a great
number of fine crystals differently oriented with respect to one
another. Alloys can be produced by melting two or more metals or
metals and non-metals together.
Ceramics are non-metallic solids made of in organic compounds such
as oxides, borides, silicide’s e.g. silica, soda lime glass, concrete,
cement etc.
Organic materials are derived directly from carbon. They consist of
carbon chemically combined with hydrogen, oxygen or other nonmetallic substances e.g. plastics, PVC, fibres, cotton, rubber etc
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