. . . . ( ) . . . ( ) ( ).
.
.
(Plain Concrete) 150 /2 200 /2.
(Reinforced Concrete) Compatibility Equilibrium 250-400 /2.
(Prestressed Concrete) () ..
(Precast Concrete) .
(High Strength Concrete) 600 /2 1400 /2 Super- Plasticizers
.
(High Performance Concrete) ( ...) ( - ) . .
(Fiber Concrete) . . Ductile Failure (Brittle)Sudden
Failure).
(Gruite Concrete) 4:1 . .
(Polymer-concrete) (6-8)% .( Polyester Epoxy (2-3) 1000 /2 100
/2 .
(Light weight concrete) 2000 /3 :1- Fine less Concrete2- Light
weight Aggregate3- ( )Cellular Concrete
(heavy Weight Concert) 2400 /2 6000 /2 .
(Mass Concrete) 15 .
(Air Entrained Concrete) 6% ( ). .
(Fresh Concrete) .( 1-2 ).
(Green Concrete) ( ). 24 ( ).
(Hardened Concrete) 24 .
:1- .2- .3- .
: / / 250 / ) Super plasticizers Silica fume . . :- . ( ) % .-
.- . / (9-10 ) .- silica fume . 0 %. % .- super plasticizers . . :
Classical application . :- high rise building - bridges - offshore
structures :
* * * * * * * : . . . . : . . - / (7 )- . .- - ( ) ).- - -
Strength / unit Cost Strength / unit volume - Strength / unit
Weight : / / / /. / / / /.. / / / . / / /
/ / /. / / /.
- . : . ( ) . . . . .. :: :- --- / .- --- /
: . :- --- / / / .- ( ) --- / / .: :- / .- --- / . :- .- .- .-
.- .- .- .- . polymer concrete : . . Polyester % -3 :- .- .- / - /
:- Plastic Concrete- Polymer Cement Concrete - Polymer Impregnated
Concrete : . . :- - - - ( :- .- .- .- .
: . . : . . . :1- - - - - - . . : : : . : . .
: .
:- )( + (- - - - -
: .http://ar.wikipedia.org/wiki/
http://material20122.blogspot.com/2012/07/blog-post_2298.html .
.
