CE8404 Important Questions Concrete Technology

CE8404 Important Questions Concrete Technology Regulation 2017 Anna University free download. Concrete Technology Important Questions CE8404 pdf free download.

Sample CE8404 Important Questions Concrete Technology:

1. What is meant by heat of hydration?

Concrete generates heat during hardening as a result of internal chemical reactions. This heat generated is referred to as heat of hydration. The amount of heat generated depends on various factors such as ambient temperature, w/c ratio, characteristics of cement, use of chemical admixtures, size of structural element and surrounding environment.. CE8404 Important Questions Concrete Technology

2. What are the raw materials used for the production of cement?

 Calcium (CaO)
 Silica (SiO2)
 Alumina (Al2O 3)
 Iron oxide (Fe2O3)

3. What is clinker and how is it produced?

The main raw material for the production of cement is clinker. Clinker is an artificial rock made by heating limestone and other raw materials in specific quantities to a very high temperature in a specially made klin. CE8404 Important Questions Concrete Technology

5. State the general properties of cement.

 It is an excellent building material
 It attains early setting
 It is easily workable
 If offers good resistance to moisture
 It possesses a good plasticity CE8404 Important Questions Concrete Technology

6. List out the varieties of cement.

 Ordinary Portland Cement (OPC)
 Low Heat Cement
 Oil Well Cement
 Portland Pozzolana Cement (PPC)

7. Define setting of cement.

When water is added to cement, hydration takes place immediately as it continuous, cement paste which is plastic becomes stiff and rigid known as setting of cement. CE8404 Important Questions Concrete Technology

8. What are pozzolonas?

These are silicious materials which, while having no cementitious values within themselves, will chemically react with calcium hydroxide at ordinary temperature and in the presence of moisture to form compounds possessing cementitious properties