This PPT is a part of our Major Project of college Ch. Brahm Prakash Govt. Engineering College, Jaffarpur, New Delhi 73

1. MAJOR PROJECT
EFFECT OF W/C RATIO, ADMIXTURE ON COMPRESSIVE
STRENGTH OF SELF COMPACTING CONCRETE (SCC)
CIVIL ENGINEERING DEPARTMENT
BATCH 2015-19
NISHANT BHICKTA 03420703415 PIYUSH KR. PANDEY 03620703415
RAVI SHNAKAR THAKUR 04320703415 DEVESH GARG 01620703415
RAM KASHYAP 04220703415 MAYANK GUPTA 02720703415

2. INTRODUCTION
Recent remarkable changes in the construction
environment and demanding improved technology for the
production of high performance concrete with far greater
workability, high strength and long durability.
Prof. H. Okamura proposed the concept of self compacting
concrete in 1986.
The motive for development of self compacting concrete
was the social problem on durability of concrete structures
that arouse around 1983 and shortage of skilled labour.

3. FATHER OF SCC TECHNOLOGY
 Prof. Dr. Hajime Okamura
 Developed Self Compacting Concrete in 1986 in Japan.
 Currently president of Kochi University of Technology, Japan.
 CANMET /ACI AWARD for outstanding contributions in the
development of SELF COMPACTABLE HIGH
PERFORMANCE CONCTERE (1995).
 OKAMURA solved the issue of degrading quality of concrete
construction due to lack of compaction by the employment of
SCC which is independent of the quality of construction work.

4. DEFINITION OF SCC
Self compacting concrete(SCC) is a concrete that can be compacted
into every corner of a formwork purely by means of its own weight,
without using any vibrators. SCC must have the following
characteristics in fresh state:-
1. Deformability:-The ability of a concrete to pass around and between
reinforcement without blocking , while completely filling the form.
2. Flowability:-The ability of concrete to flow without use of external
assistance.
3. Segregation Resistance:-The concrete must possess enough
viscosity to keep all the particle in unified suspension as to avoid
separation of material ( e.g. avoid heavy bleeding ).

5. ADVANTAGES OF SCC
 Better assurances of adequate consolidation.
 Reduced wear and tear on forms due to vibration.
 Ease of placement, requiring fewer workers for a particular pour.
 Improved surface finish.
 Reduced energy consumption from vibration equipment (although
the energy required for longer mix times will offset this somewhat).
 Reduced permeability.
 Less noise from vibrators and reduced danger from hand- arm
vibration syndrome.
 Increased durability

6. DISADVANTAGES
 This type of concrete involves more economy
compared to normal concrete.
 Due to low water-cement ratio, plastic shrinkage
cracks may occur.
 There is no specific Indian standards codal provision
for mix design of self compacting concrete.
 Highly skilled and experienced workers are required
for the production of SCC

7. MECHANISM OF ACHIEVING SELF
COMPACTIBILITY

8. RHEOLOGY OF SCC

9. PROJECT OVERVIEW
 The purpose of this project is to analyze the effect of
size of aggregate of self compacting concrete of M70
grade .
 So this experiment will show us variation of concrete
strength with aggregate size and self compacting
concrete’s benefits for the future’s construction industry
.
 For this we have casted 27 cube( 3 cubes for each CA
size) and 3 standard prism to find compressive and
flexural strength respectively.

10. MATERIALS USED IN THE
PROJECT
1. Cement
 UltraTech cement PPC cement.
 Collected from store.
2. Coarse Aggregate
 16mm,12.5mm,10mm
 Collected from Local quarry.
3. Fine Aggregate
 Yamuna river & Badarpur sand is collected from college
premises.

11. 4. Fly ash
 A fine grained powder consisting mainly of
spherical particle produced as a by product in
coal fired power station. collected from perma
company, Delhi.
5. Super plasticizer
 Perma Plast PC-404 is a super plasticizer having
high range water reducer based on high
molecular weight poly carboxylic copolymer

12. VISCOSITY MODIFYING AGENT
(VMA)
 Fosroc Auramix V200 is ready-to-use, liquid,
viscosity modifying agent, collected from Delhi.
manufactured by Foscroc chemical company.
 It is added to modify the viscosity of the concrete
mix. It Also VMA helps us in eliminating segregation
in the concrete mix

13. TEST PERFORMED
1. TEST ON CEMENTS
 Specific gravity
 Consistency
 Initial setting time
 Final setting time
 Soundness test
2. TEST ON AGGREGATES
 Bulk density
 Specific gravity
 Flakiness index
 Elongation index
 Fineness modulus

14. 3. Tests on fresh concrete
 Slump flow test
 T50 test
4. Tests on hardened concrete
 Compressive strength
 Flexural strength

15. PHYSICAL PROPERTIES OF
CEMENT
S.NO. PROPERTY TEST METHOD TEST RESULTS
1. Normal Consistency
Vicat apparatus
IS:4031(part4)
32%
2. Specific gravity IS:2720-Part-3 3.08
3.
Initial setting time
Final setting time
IS:4031-part5-1988 44min
310min
4. Fineness IS:4031-part1-1996 6%
5. Soundness
Le Chatelier apparatus
(IS:4031-part3-1988)
6mm

16. PHYSICAL PROPERTIES OF
AGGREAGTES
S.No. Property Method Fine
Aggregate
Coarse Aggregate
1. Specific gravity
Pycnometer
IS:2386 part3-1986 2.67 2.63
2. Flakiness index IS:2386 Part 2-1963 ---- 27.70%
3. Elongation index IS:2386 Part 2-1963 ---- 2.82%

17. FLOW CHART OF SCC MIX DESIGN
Adjustment of Super Plasticizer Content
Calculation of Viscosity Modifying Agent
Calculation of Water Content
Calculation of Cement Content
Calculation of Fine and Coarse Aggregate
Collection of Data

18. MIX DESIGN QUANTITY FOR
DIFFERENT SIZE OF AGGREGATES
S.NO. CONSTITUENTS QUANTITY (Kg/m3)
1. Cement 414.33
2. Fine Aggregate 776.91
3. Coarse Aggregate 960.74
4. Super Plasticizer 3.31
5. VMA 1.44
6. Water 186.56

19. TESTS ON FRESH SCC
SLUMP FLOW & T50 TEST
 Slump flow test is used to find the
filling ability and segregation
resistance of SCC.
 The SCC sample is poured in to the
slump cone then the slump flow
diameter is measured.
 The flow time is measured & that is
known as T50 slump time.
 Slump flow & T50 test
 L-box test
 V-funnel test
 J- ring test
 U-box test

20. SLUMP FLOW & T50 TEST

21. PREPARATION OF SCC SPECIMEN
 All the materials are placed in the mixer by weight & mixed
well.
 The concrete mix poured in to the mould and left for 24 hours
in mould.
 Then cubes are taken out and put in curing tank for curing.
 One day before testing the cube are dried for 1 day.
 Then test for compression and flexure is performed.

22. CURING OF CUBE

23. ACCEPTANCE CRITERIA OF SCC
Filling ability, passing ability and segregation resistance
are checked by these method. All this test are done as
specified by EFNARC
S.NO. METHOD UNIT TYPICAL RANGE OF VALUES
MIN MAX
1. SLUMP FLOW TEST mm 650 800
2. T50 SLUMP FLOW sec 2 5

24. FRESH PROPERTIES OF M70 GRADE
CONCRETE
S.No SIZE OF
AGGREGATE
SLUMP
FLOW
VALUE
T50 V-FUNNEL V-FUNNEL
AT T5min
L-BOX
H2/H1
(BLOCKING
RATIO)
1. 20 mm 720 mm 5 sec 9 sec 12 sec 1.00
2. 12.5 mm 725 mm 5 sec 6 sec 8 sec 1.00
3. 10 mm 735 mm 5 sec 7 sec 9 sec 1.00

25. COMPRESSIVE STRENTH (Mpa.)
S.NO. SIZE OF
AGGREGATE
3 DAYS 7 DAYS 28 DAYS
1. 20 mm 31.80 46.30 74.00
2. 12.5 mm 36.20 49.00 77.10
3. 10 mm 38.33 49.66 79.30

26. COMPRESSIVE STRENGTH WITH VARIOUS
SIZES OF AGGREGATES

27. FLEXURE STRENGTH (Mpa.)
S.No. SIZE OF
AGGREGATES
3 DAYS 7 DAYS 28 DAYS
1. 20 mm 4.03 6.75 8.50
2. 12.5 mm 4.60 7.47 9.13

28. FLEXURE STRENGTH

29. SPLIT TENSILE STRENGTH

30. BAR DIAGRAM

31. BAR DIAGRAM

32. BAR DIAGRAM

33. CONCLUSION
Based on our studies we concluded that the mix designed using the lower
size of aggregate(10mm) yielded better result than higher size of aggregates.
2. From the observations it was found that nearly 40% of the compressive
strength is gained in 3 days and 90% of the strength in 14 days curing as per
IS:456-2000.
3. It was also observed that flexural strength of SCC has attained the
permissible values in 28 days as per IS:456-2000.
4. As the strength of concrete increases, the effective size of aggregate has
decreased.
5. SCC can be effectively placed in most congested areas and also where
normal methods of vibration are not possible

34. OUR ROLE
AS A ENGINEER :-
 Maximum application of self compacting concrete.
 Learning and guiding workers to implement the self compacting
concrete.
AS A RESEARCHER :-
 To identify test methods for SCC to improve its workability.
 Forming IS codes for the self compacting concrete.

35. REFERENCES.
1. Brain Paulson.EFNARC, secretary general, “specifications and
guidelines for self-compacting concrete”, february 2002.
2. Nan Su, K.C. Hsu,H.W. Chai. Asimple mix design method for
self-compacting concrete research 2001.
3. Okamura.H. “Self-compacting High performance concrete",
concrete international, Vol.19,No.7,pp.50-54,july 1997.
4. IS:456-2000 code of practice for plain and reinforced concrete. 5.
“concrete technology” by M.S. Shetty. S.Chand & company
LTD.2002. 6. IS:516-1959 Method of test for strength of concrete.

36. THANK YOU