To determine the slump and compaction factor of concrete mix (ratio 1:2:4)

 

OBJECT: To determine the slump and compaction factor of concrete mix (ratio 1:2:4)

 

2. APPARATUS:- Slump cone & vase. compaction, Factor apparatus. Tamping rod. Glass Jars 1000 cc. & 100 cc. Trowel. Bucket, Plateform balance etc.

 

OBSERVATION:-

Weight of Cement =

Weight of F.A.=

Weight of C.A.-

Water/cement ratio:- for mix A=

For mix B-

Mix	Height of Slump Cone (cms)	Height of Concrete in cms	Slump (cms)

 

COMPACTION FACTOR TEST

Mix	Wt. Of Cylinder + concrete (kg)	Wt. Of concrete Actual (kg)	Wt. Of concrete  (Theoritical)(kg)	C.F.

 

WL. Of Empty cylinder =

Wt. Of cylinder + water =

3. PROCEDURE:-

a) Prepare the mix in 1:2:4 ratio by weight first mix cement. F.A. . C.A. dry then add water & mix thoroughly

b) Fill slump cone welth this concrete in 3layers upto tap level and compact each layer by tamping rod giving 25 blows for each layer.

c) After slump test put this concrete top hopper of C.F. apparatus

4. For calculating theoretical weight of concrete (fully compacted) the respective densities of cement F.A. C.A. may be taken as obtained earlier.

5. RESULT:-

6. DISCUSSION:-

 

 

OBSERVATIONS FOR COARSE AGGREGATES

 

Wt. Of C.A.                                                                             Kg

Sieve size	Weight retained (gm.)	Commulative Wt Retained	Cumulative% retained	Percent pass
150mm
75mm
40mm
20mm
10mm
4.75mm
2.36mm
1.18mm
600micron
300micron
150micron
Pan

 

OBSERVATIONS FOR FINE AGGREGATES

Wt. of F.A.                =           Kg

Sieve size	Weight retained (gm.)	Commulative Wt Retained	Cumulative% retained	Percent
4.75mm
2.36mm
1.18mm
600micron
300micron
150micron