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Civil Concrete Technology Lectures Notes Download
Concrete in practice
Concrete is a composite with properties that change with time. During service, the quality of concrete provided by initial curing can be improved by subsequent wetting as in the cases of foundations or water retaining structures. However, concrete can also deteriorate with time due to physical and chemical attacks. Structures are often removed when they become unsafe or uneconomical. Lack of durability has become a major concern in construction for the past 20 to 30 years.
Concrete has been the most common building material for many years. It is expected to remain so in the coming decades. Concrete is widely used in domestic, rural, commercial, recreational and educational construction Communities around the world rely on concrete as a safe, strong and simple building material. It is used in all types of construction; from domestic work to multi-storey office blocks and... |
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Concrete is a construction material that consists, cement, aggregate i.e. gravel and sand and... |
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Tests |
Mix design can be defined as the process of selecting suitable ingredients of concrete and determining their relative proportions with the object of producing concrete of certain minimum strength and durability as economically as possible. Design of concrete mix requires...  [Read More] |
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The most important step in placing concrete is planning. Planning means to determine the workability required, the type of concrete to be made, method of placing and mode of transportation, etc. Always plan every step before any concrete is delivered.
Proper planning avoids..... Site preparation is to clear the way for concrete to its place of installment, to identify joints of installment etc. The following steps should be taken before any concrete is placed... |
In concrete a substance other than active and inert matter, added in small amounts to the mix to alter its natural properties to required properties... [Read More]1. Accelerating admixtures 2. Retarding mixtures 3. Fly ash 4. Air entraining admixtures 5. Water reducing admixtures |
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Special Concrete includes hot & cold weather concreting, prestressed concrete, high performance concrete, Polymer modified and self compacting concrete.... |
Civil Engineering Practicals of concrete, Engineering materials and other fields available for a free download here: |
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