Rapid Hardening Cement
Rapid Hardening Cement
Rapid Hardening Cement, as the name indicates these type of cement gains high strength in early days. But, the initial and final...
Concrete Shrinkage – Shrinkage of Concrete
Concrete Shrinkage - Shrinkage of Concrete
Concrete shrinks during setting and drying due to hydration of cement and produces shrinkage cracks. The drying shrinkage increases...
Slump Cone Test and its Advantages – Limitations
Slump Cone Test and its Advantages - Limitations
Although, the slump cone test is not entirely satisfactory since it gives widely varying results and also...
Cold Weather Concreting- Concreting in Cold Weather
Cold Weather Concreting
During Cold weather concreting, the rate of hardening and setting of concrete is very much retarded when the temperature falls below 21...
Guniting or Shotcrete or Shot Concrete
Guniting or Shotcrete
Guniting or Shotcrete: An intimate mixture of cement, sand (or fine aggregate) and water is forced or ejected through a cement-gun and...
Concrete Segregation – Segregation of Concrete
Concrete Segregation - Segregation of Concrete
It is the separating of the coarse aggregate from the rest of the mix or the separating of the...
Concrete Bleeding – Bleeding of Concrete
Concrete Bleeding - Bleeding of Concrete
Concrete bleeding is the appearance of a watery scum (also called laitance) on the surface of a concrete after...
Hot Weather Concreting – Concreting in Hot Weather
Hot Weather Concreting
Hot Weather Concreting in tropical countries, such as India, air temperatures may rise up to 40-50 deg. C. during summer months. Such...
Concrete Blocks
Concrete Blocks
(1) Raw materials used in Concrete Blocks :
The materials required for the production of the concrete blocks are aggregates, cement and water....