This document presents a study on developing self-compacting concrete using fly ash. It discusses the materials used, including cement, aggregates, water, superplasticizers, and fly ash. Tests were conducted to measure the fresh and hardened properties of self-compacting concrete mixtures. The results showed that as the water-cement ratio increased, the slump flow and passing ability improved while strength decreased. Self-compacting concrete provides benefits like easier placement, improved quality, faster construction, and reduced labor.

1. Under the Guidence of Mr. Amjad
(Asst.prof.)
Self Compacting Concrete By
Using flyash

2. PRESENTED BY
 G. Rajinikanth (14E41A0106)
 G.Kiranreddy (14E41A0108)
 P.Ravi (14E41A0111)
 M.Narender (14E41A0115)
 CH.Siddarda (14E41A0125)

3. CONTENET
1) Introduction
2) Materials used
3) Development of SCC
4) Properties
5) Concepts of SCC
6) Advantages
7) Conclusion

4. INTRODUCTION
 SELF COMPACTING CONCRETE (SCC) : SCC is the
fluid mixture which is placed in any srtucture with
congested reinforcement without any vibrations.
 It should ensure the balancing capacity for better
stability and deformability of concrete.
 Thus SCC eliminates the vibration for the
compaction of concrete without affecting its
engineering properties
 It contains flyash, Sand, Cement and Aggregates.

5. MATERIALS USED
 Cement
 Aggregates
 Water
 Chemical Admixtures i.e. Super plasticizers
 Mineral Admixtures i.e., Fly ash, Silica Fume.

6. Development of scc
 The necessity of this type of concrete was
proposed by Okamura in 1986.
 Studies to develop SCC have been carried out
by Ozawa and Melawi at the university of
Tokyo.
 Present-day SCC can be classified as an
advanced construction material.

7. FATHER OF SCC TECHNOLOGY
Prof.Dr.Hajime Okamura
 Developed Self compacting
concrete in 1986 in JAPAN.
 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.

8. PROPERTIES OF SSC
IN FRESH STATE, SCC HAVING FOLLOWING
PROPERTIES-
 Filling ability (excellent deformability) – flows easily at
suitable speed into formwork.
 Passing ability(ability to pass reinforcement without
blocking)- passes through reinforcement without blocking.
 High resistance to segregation – the distribution of
aggregate particles remains homogeneous in both vertical
and horizontal directions .

9. MEASUREMENTS OF SSC FLOW
PROPERTIES IN FRESH STATE
 Slump flow test
 L- Box test
 V- Funnel test
 J- Ring test

10. SLUMP FLOW TEST
 Slump flow test is used t find the filling ability of the 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 know as T50 slump time.

11. SLUMP FLOW APPARATUS AND
RESULTS

12. L- BOX TEST
 The L- box test is used to find the passing ability
of SCC.
 The SCC sample is poured in to the L-BOX
apparatus, now the plate is removed to allow flow.
 The L-Box ratio calculated as H2/H1.

13. L-BOX APPARATUS

14. V-FUNNEL TEST
 The V-Funnel test is used to find the segregation
resistance of SCC.
 The SCC sample is poured in to the V- Funnel apparatus ,
now its allowed to flow by its weight.
 This test measured the ease of flow of the concrete,
shorter flow times indicate greater flow ability.

15. V-FUNNEL APPARATUS

16. TESTES ON HARDNED CONCRETE
 Compressive Strength Test
 Split Tensile Strength Test
* split Cylinder Test
* standard Beam Test
 Flexural Strength Test
Preparation of SCC specimens:
 All the materials are placed in the mixer & mixed well .
 The sample is taken out and poured in to the moulds.
 The moulds are socked in water & allowed for curing .

17. Discussion of test results
Based on the above experimental results, the
observations are as follows:
 Slump flow increases with the increase of
water/cement ratio.
 T50 time, V-funnel time and U-box values are
decreases with the increase of w/c ratio.
 L-box value increases with the w/c ratio and
Compressive strength, tensile strength and
flexural strengths are decreasing as the w/c ratio
increases.

18.  Marginal increase in the compressive strength
at 28 days of concrete as the w/c ratio
decreases.
 Compressive strength and split tensile
strength decreases at higher rate for 7 days
strength when compared to 28 days strength
 flexural strength value decreases at higher
rate for 28 days strength when compared to 7
days strength

19. ADVANTAGES OF SCC
 Elimination of problems associated with vibration.
 Faster construction.
 Less noice from vibrators and reduced danger from hand-arm
vibrator syndrome(HAVS).
 Improves working conditions and productivity in construction
industry
 Ease of placement result in cost savings through reduced
equipment and labour requirement.
 Improves the quality , durability , and reliability of concrete
structures due to better compaction and homogeneity of
concrete.
 Greater freedom in design.
 Reduced wear and tear on forms from vibration.
 Reduced permiability.

20. CONCLUSION
 Self Compacting Concrete (SCC) technology can save time,
cost, enhance quality, durability and Moreover it is a green
concept.
 Cast-in-place concrete construction in tight space and
congested reinforcement, such as, drilled shafts, columns and
earth retaining systems, can be accelerated by using SCC.

21. THANK YOU