There are many waste products available which can be used as the replacement of fine aggregates as sources of sand are depleting day by day.

1. Presented by :-
Himanshu Guleria
(801624012)

2.  WFS stands for Waste Foundry Sand.
 A foundry produces metal castings by pouring molten
metal into a performed mold to obtain the resulting
hardened metal cast.
 Foundries successfully recycle and reuse the sand
many times in the foundry and when sand is no
longer of reused, it is removed and termed as
waste/used foundry sand.

5.  By product from production of both ferrous (iron and
steel) and non ferrous (copper, aluminium, brass and
bronze) metal casting industries.
 Sand as a molding material has been used for centuries
because of its thermal conductivity.
 Highly rich in silica content.

6. Clay-Bonded
(Green Sand)
->Silica (85-95%)
Binder-> Bentonite Clay (4-10%)
Carbonaceous additive (2-10%)
Plasticity -> Water ( 2-5%)
Color – Grey or Black
(Carbon Content)
Used in 90% of
molding materials
Lower organic
containment
Chemically
bonded Sand
->Silica (93-99%)
Binder-> Chemical(1-3%)
sodium silicates, epoxy-resins
Color – Tan or off white

7.  Excavation of sand and stones from river banks is one of the
main cause for disasters caused due to FLOODS
NEED FOR REPLACEMENT

8. Sources of sands are depleting as it is obtained
naturally unlike the cement which is
manufactured.
The successful use of industrial waste like
foundry sand will aid in reducing the
environmental and health problems related to the
disposal of wastes.
The scarcity of land area needed for disposal.

9.  Indian Foundry Industry is the 4th largest casting producer
in the world.
 More than 5000 foundry units in India.
 Installed Capacity – Approximately 7.5 million tones per
annum.
 WFS Generate – Approximately 1.71 million tones per
annum.

10.  High way embankment construction
 Ground Improvement
 Hydraullic Barrier
 Concrete made with foundry sand can be suitably used
in making structural grade concrete.
 The results indicate that the % change in cost reduce
upto 5.17 for 50% replacement of used foundry sand
plus 10% replacement of pozzocrete.

11. Property T. Naik Guney R. Siddique
Specfic Gravity 2.79 2.45 2.18
Fineness
Modulus
2.32 - 1.89
Unit weight
( kg/m3)
1784 - 1638
Absorption 5.0 - 1.3
Moisture Content - 3.25 -
Clay lumps and
friable particles
0.4 - 0.9
Materials finer
than 75 micron m
(%)
1.08 24 18

12. Constituent AFS Guney R. Siddique
SiO2 87.91 98 83.8
Al2O3 4.70 0.8 0.81
Fe2O3 0.94 0.25 5.39
CaO 0.14 0.035 1.42
MgO 0.30 0.023 0.86
SO3 0.09 0.01 0.21
Na2O 0.19 0.04 0.87
K2O 0.25 0.04 1.14
TiO2 0.15 - 0.22
Mn3O4 0.02 - 0.047
SrO 0.03 - -
LOI 5.15 - 2.15

13. 28 Days
91 Days
365 Days
0
10
20
30
40
50
60
0% 5%
10% 15%
20%
28 Days
91 Days
365 Days

14. 28 Days
91 Days
365 Days
3.8
4
4.2
4.4
4.6
4.8
5
0% 5%
10% 15%
20%
28 Days
91 Days
365 Days

15. 28 Days
91 Days
365 Days
27
28
29
30
31
32
33
34
35
0% 5%
10%
15%
20%
28 Days
91 Days
365 Days

16. Tarun Naik Guney Rafat Siddique
Replacement 25 & 35 5,10,15 5,10,15,20
Testing Days 28 28 & 56 28,91 & 365
Workability -0.2,-0.25 -6.25,-31.25 &- 62.5 -5.55,-5.55,-11.11,-11.11
Compressive
Strength
-0.45,-1 -13.11,0,-14.75
-6.25,1,(-)10.2
8.3,12.8,17,13.5
5.9,8.23,10.6,5.9
8.88,14.4,15.55,14.4
Split Tensile
Strength
-13,-30.2 -5.7,11.5,(-)11.42
-8.37,2.87,-13.61
3.57,8.33,11.9,7.14
3.95,10.46,11.7,9.3
4.5,9.09,13.6,11.36
Elastic Modulus 5.36,5 -7.65,-1.78,-8.5
-3.5,0.5,-6.43
1.67,5.03,6.54,4.02
2.83,3.93,6.29,5.51
1.53,3.84,4.61,3.38

17.  Strength properties of concrete mixtures increase with
the increase in foundry sand contents and also with
the age.
 Strength properties results indicate that waste foundry
sand could be very conveniently used in making good
quality concrete and construction materials.
 Workability is decreases with the increase of foundry
sand content because of very fine particles.
 Results have indicated that concrete made with (up to
15%) WFS could suitable be used for making structural
grade concretes.

18. THANK YOU