Concrete

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 with an increase in cement content or an increase in water content. Shrinkage is greater with riche...

Read More

Tagged As: ,

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 does not give a true measure of workability but it is of value in the field as a control test and is useful in comparin...

Read More

Tagged As: ,

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 compaction. It is- an indication that there is too much water or deficiency of fine material in the mix, or that too much ...

Read More

Tagged As:

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 cement-water paste from the aggregate. Segregation generally indicates poor aggregate grading or mix design. Segregation may occur i...

Read More

Tagged As:

Sea Water for Mixing Concrete

Sea Water for Mixing Concrete It is advisable, as stated above, to use clean water fit for drinking purposes for making cement concrete. However, at places where sea water is available in abundance and potable water is costly, the sea water can be used for making cement concrete....

Read More

Tagged As:

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 setting time of Rapid Hardening Cement is same as that of ordinary PPC cement. These cements have about 56% of tricalcium silica...

Read More

Tagged As:

High Density Concrete

High Density Concrete High density concrete is a concrete having a density in the range of 6000 to 6400 kg/cu.m. High density concrete is also known as Heavy weight concrete.  High density concrete is mainly used for the purpose of radiation shielding, for counterweights and oth...

Read More

Tagged As:

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. The aggregates of various types have been used with varying degree of success and they include crushed stones, gravel, vo...

Read More

Tagged As: