Concrete
is the second largest material consumed by human beings after food and water as
per WHO. It is obtained b mixing cement, fine aggregate, coarse aggregate and
water in required proportions. The mixture when placed in forms and allowed to
cure becomes hard like stone. The hardening is caused
by chemical action between water and the cement due to which concrete
grows stronger with
age.
The strength, durability and other characteristics of concrete depend
upon the properties of
its ingredients, proportion of the mix, the method of compaction and other controls during placing,
compaction and curing.
Concrete possess a high compressive
strength and is usually more economical than steel and is non corrosive which can be made with locally available materials. Hence concrete is used widely in all present-day constructions. The
concrete is good in
compression and bad in tension. Hence liable to be cracked when subjected to tensile load. In situations
where tensile stresses are developed concrete is strengthened by steel bars forming a composite construction
called Reinforced
Cement Concrete (RCC).
Lebih lengkapnya, silakan download
Ebook Concrete Mix Design
Tidak ada komentar:
Posting Komentar