تصميم الخلطات الخرسانية
DESCRIPTION
خرسانةTRANSCRIPT
-
5/21/2018
1/19
@ba@bg@
@ba@pba@m
Concrete Mix Design
______
Proportioning
.
Empirical Proportioning
(
)
.)Finishing(Placing
.
Available Materials
Required
QualitiesatMinimum Cost
Quality
Slump
.
.
.
.
.
Expressing Proportions___________________________________________
Granular Materials
Ratios
:: :
-
5/21/2018
2/19
@ba@lbjaba@m@
.
.Compaction
.Bulking
Cement/AgrregatesRatio
:
:Rich or Lean Mix
.:
.
Cement Factor
( )
:
=
.
:
-
5/21/2018
3/19
@ba@bg@
)(
.
.
--
:
,,
==%
.
Aggregate-Paste Relationship________________________________________________
)()(
.
.
High
Strength Concrete (
(
)-.(
..
.
Suspension)-.(
.
)./(
.
.
-
5/21/2018
4/19
@ba@lbjaba@m@
)(
)(
-
5/21/2018
5/19
@ba@bg@
Mix Design Methods_______________________________________
@cZa@a
Empirical Method__________________________ Experience
. Small Jobs
( )
Plastic
.Workable
:
Consistency
. :
)/(
.""
""
.
.
:
- .)/(/
- .
-/ :
.
-
.
-
5/21/2018
6/19
@ba@lbjaba@m@
@bqZb a@ Trial Method_________________________
/
.
./
:
).%(-
.)/(-
- .
-
//
).(
-
.
.-
.-
rbqZa@va@Absolute Volume Method______________________________________
Concrete Ingredients
:
= 1000 Liters= + + +
C
G
S
G
G
G
W
1.0c s gAbsolute Volume
:
C=.
S=
G=
W=
Gg , Gs , Gc=
=.
-
5/21/2018
7/19
@ba@bg@
Strength:Workability
-.
-
)/(
.
-
.
-.
PracticeExperience
Laboratory Tests CW/CG/S
Gg , Gs Gc
.
)(
.
:
Plastic
/ .
/%
:.=
.) =(
./) =(
;;;;;;;;;;;;;;;;;;; a
;;;;;;;;;;;;;;;;;;;):()(-
/
.
%
.%
: -
:%
-
.
:
) +/(=
-
5/21/2018
8/19
@ba@lbjaba@m@
./=+=
-
.
).-(
=)/(
.=
)/(
)(
)
(
,,,,,
,,,,,
,,,,,
:-
=)/= (
1000 litres== + + +300
3.15
S
2. 65
1.5S
2. 65
150
1. 0Absolute Volume
.=
.=
:
:::
:
-
5/21/2018
9/19
@ba@bg@
)()(
:
- Optimum Unit Weight Method
%....%%%:
)-(.
.%
- Surface Area Method
.
/
.
.
-
5/21/2018
10/19
@ba@lbjaba@m@
UMUba b ba pba mDesign of HSC Mixes_______________________________________________
).(
.
.
1- :
-
/
.
.-
.-
.-
2- :
/
%
%
%
%
:
.
3-
.
.
.
.
-
5/21/2018
11/19
@ba@bg@
4- :
/%
%
- )Superplasticizers(
.FType494ASTM C
GType494ASTM C
6- )Superplasticizers(
.
+/
%
%
%
%
7- /
)
.(
8- 20..
(
).
9- )+ ( .
)
=
-
5/21/2018
12/19
@ba@lbjaba@m@
).
./
w / c mlog {
(1000 C SF)}
3.0*log ( )=
fc
:
w/cm )+(
fc/C -
SF -
.
.
))w/cm
./=/=
/=
=
/%
%
%
%
%
-
,
,
,
,
,
-
,
,
,
,
,
,,,,,-
-
,
,
,
,
,
-
,
,
,
,
,
-
,
,
,
,
,
-
:
===
===
-
5/21/2018
13/19
@ba@bg@
:
:
-
=
/
=-
-
-
:
-
-----
-
a@m
- %=/
.
-
%
=
/.
./% ==
-=%ypeT-ASTM
G
) =+(=
-w/cm==
=
) =+(=
-%
:.
+=)+(
=
.
-
5/21/2018
14/19
@ba@lbjaba@m@
-:
475
3.15
47.5
2.15
0.375 W
2.65
W
2.7
15.675
1.15
153.6
1.0
1000+ + + + + =
W .
=
==
- :
=-
-
=
=-
=-
=ASTM C494 Type G-
- =
____________________
-
5/21/2018
15/19
@ba@bg@
Uba@pbjna@pa@ba@pba@i@@
Concrete Mixes With Special Requirements_________________________________
(
).
.
1
:
./=-
-
.
.-
:
./-
- (= ).
).(:=-
:
-
=
.
- ./=
./=-
-
=
/
.
-
5/21/2018
16/19
@ba@lbjaba@m@
2
:-
=
/
.
.-
.-
:-
/.
- (= ).
-
=
:
)
.(
.ASTM type G%-
:-
=
-
=
.
-
=
/
.
./=-
./=-
3 :
./=-
.-
:-
/.
- (= ).
).(:=-
.ASTM type G%-
:-
=
-
=
.
-
=
/
.
-
=
/
.
-
5/21/2018
17/19
@ba@bg@
./=-
4
:-
=
/
.
.-
:
./-
- (= ).
-
=
:
)
.(
-
%
ASTM type G.
:-
=
-
=
/
.
./=-
./=-
5
:./=-
.-
:
./-
-
%
)
.(- (= ).
.%=-
.%=-
.%=-
.ASTM type G%-
:
-
=
-
5/21/2018
18/19
@ba@lbjaba@m@
./=-
./=-
6
:./=-
.-
:
./-
-
=
)
.(
-
=
:
)
.(
:=-
./=-
-
=
/
.
./=-
:
-
/.
- (= ).
).(:=-
.ASTM type G%-
:=-
./=-
-
=
/
.
-
=
/
.
*********
-
5/21/2018
19/19
@ba@bg@