Block, SkipCaptcha, Upload, Automoderated users, Check users, delete, edit, Moderators, move, oversight, protect, ratelimit-exempt, rollback, Administrators
20,332
edits
Changes
mLine 1:
Line 1: − + + + + Line 6:
Line 9: + + + + +
→Reinforced concrete: name
'''Concrete''' is a material commonly used in construction. It is composed of cement, aggregate, water and special chemicals known as admixtures.
'''Concrete''' is a material commonly used in [[construction]]. It is composed of [[cement]], aggregate, [[water]] and special [[chemicals]] known as admixtures.
==Cement==
Usually, Portland cement is used to make concrete. Portland cement contains calcium silicates.
==Admixtures==
==Admixtures==
*Pigments change the colour of the concrete.
*Pigments change the colour of the concrete.
*Bonding agents create a good bond when adding new concrete to old.
*Bonding agents create a good bond when adding new concrete to old.
==Reinforced concrete==
Concrete is very strong in compression, but weak in tension. To make it a more useful construction material, [[steel]] bars (rebar) are often installed in fresh concrete, to increase the tensile strength.
[[Category:Materials]][[Category:Construction]]