. . . . ( ) . . . ( ) ( ).

.

.

(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 . .