RAJALAKSHMI ENGINEERING COLLEGEDEPARTMENT OF CIVIL ENGINEERINGCE 2307

- CONCRETE AND HIGHWAY MATERIALS LABORATORYVIVA QUESTION
1.What is meaning of Consistancy in concrete?2.What is slump of concrete?3.What is the significance of shear slump?4.What is segregation?5.Define workability of concrete?6.What is the significance of flow test?7.What is the water cement ratio for workable concrete?
8.What is the difference between fully compacted and partially compactedconcrete?9.What is the significance of compacted concrete?10.Define density of ....etc

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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.

ConcreteIn some developed countries, it is not uncommon to find large a ....etc

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vtu 8th civil advanced concrete technology notes pdf

Advance Concrete is a computer-aided design (CAD) software application was developed by GRAITEC, but is now an Autodesk product,used for modeling and detailing reinforced concrete structures. Advance Concrete is used in the structural / civil engineering and drafting fields.Based on the Institute of Concrete Technology's advanced course, this new four volume series is a comprehensive educational and reference resource for the concrete materials technologist.

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Admixtures
A material other than water, aggregates, or cement that is used as an ingredient of concrete or mortar to control setting and early hardening, workability, or to provide additional cementing properties.

Why is admixture used?

Over decades, attempts have been made to obtain concrete with certain desired characteristics such as high compressive strength, high workability, and high performance and durability parameters to meet the requirement of complexity of modern structures.

The properties commonly modified are the heat of hydrati ....etc

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The cement industry faces a number of challenges that include depleting fossil fuel reserves, scarcity of raw materials, perpetually increasing demand for cements and concretes, growing environmental concerns linked to climate change and an ailing world economy. Every tonne of Ordinary Portland Cement (OPC) that is produced releases on average a similar amount of CO2 into the atmosphere, or in total roughly 6% of all man-made carbon emissions. Improved production methods and formulations that reduce or eliminate CO2 emissions from the cement ma ....etc

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ADVANCE CONCRETE TECHNOLOGY VTU NOTES OF ALL 8 UNITS ACCORDING TO VTU SYLLABUS 2010 ....etc

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