1. “Application of CNC waste with Recycled Aggregate
in Concrete Mix”
DEPARTMENT OF CIVIL ENGINEERING
KAVIKULGURU INSTITUTE OF TECHNOLOGY & SCIENCE
RAMTEK, NAGPUR (M.S.), PIN-441106
Guide
Shri A. N. Dabhade
(Asst. Professor)
(B.E. Civil Engineering)
Mr. Awanish Shukla
Introductory Project Review
on
By
CNC
5. What is CNC waste…????
CNC waste is waste obtained from Computer
Numeric Controlled Lathe Machines.
Annual CNC waste collection is about 1200 tonnes.
CNC
9. Concrete Dependency (2E’s & 2Q’s)
CONCRETE
Environ
ment
Economy
Quality
Quantity
In this aspect
CNC waste
is most
important….!!!
CNC
10. By this we can prepare
A Large “Quantity”
Of
“Economic” Concrete
With
Remarkable “Quality”
CNC
11. Objective
To prepare most economic concrete mix; which
fulfils each and every quality specification as
desired.
Main Objectives on which the project is based-
-Workability
-Durability
-Shrinkage Free
-Bleeding Free
-Good Proportioning
CNC
12. To understand the current situation and the status of
the collected CNC waste and recycled aggregate
and to understand the availability of these materials.
To collect CNC Lathe waste from Sunflag Steel
Enterprises Bhandara, Machine Shop of Mechanical
Department, K.I.T.S. Ramtek, and Recycled
Aggregate from Kaveri Girls Hostel & Concrete
Lab.
To study the properties of recycled aggregate, the
properties of the materials have to be examined
through various tests. The various tests have been
performed so as to check the different properties of
aggregate
13. To prepare a mix design by IS code method.
Test is to be performed on M20 cube
replacing NCA with RCA and CNC.
Replacing 30%, 50% & 100% NCA by RCA
in addition of 1% and 2% CNC.
Water cement ratio is taken as 0.50 by
concrete mix design.
Test on concrete cube specimens for
compressive strength.
14. Conclusion of Literature
Literature on CNC:-
Many researchers used variety of wastes in
their researches ranging from bicycle spokes
lathe waste, soft drink bottle caps etc.
Researchers used these wastes to carry the
experiments for the analysis of various test
15. They got variety of results in which a
tremendous increment in the compressive,
tensile and flexural strength were obtained
by addition and different composition of the
wastes.
16. Literatures on RCA:-
In various researches ,various proportions
of replacement of natural coarse aggregate
with recycled coarse aggregate was carried
out.
It was seen that the results were enhanced
when 30% and 50% replacement of natural
coarse aggregate with recycled coarse
aggregate was carried out and considerable
desired results were obtained.
17. Work carried out
Characters Experimental values As per IS : 8112-1989
Consistency of Cement 33.0% -
Specific gravity 3.15 3.15
Initial setting time 125 minutes >30 minutes
Final setting time 300 minutes <600 minutes
Test on cement
18. Property of Fine
Aggregate
Value of Fine
Aggregate
As per IS : 383-
1970
Specific gravity
test
2.27% 2.55
Bulk Density test
kg/m3
989kg/m³ 1440 kg/m³
Fineness modulus
test
2.90 _
Water absorption 1.30% 2.10%
Test on Fine aggregate
19. Property of aggregate Value of Natural
aggregate
As per IS: 383-
1970
Specific gravity(IS:2386-
1963)
2.68 2.74
Bulk Density
kg/m3(IS:2386-1963)
1482kg/m³ 1600kg/m³
Fineness modulus 6.30 _
Water absorption
(IS:2386-1963)
1.20% 0.50%
Impact value test 16.32% 30%
Crushing value test 21.30% 30%
Test on Coarse aggregate:
20. Property of aggregate Value of Recycled aggregate
Specific gravity 2.77
Bulk Density kg/m3 1370kg/m3
Fineness modulus 5.55
Water absorption 4.3%
Impact value test 26.66%
Crushing value test 25.6%
Test on Recycled aggregate
21. Procedure for MIX DESIDN
(By IS code method)
The target mean compressive ( fck ) strength at 28 days is
given by
fck= fck + tS
fck=20+1.65x4 = 26.6 MPa
Where,
fck = characteristic compressive strength at 28 days.
S = standard deviation.
t = a statistical value depending on expected proportion
of low results (risk factor).
23. V = absolute volume of fresh
concrete, which is equal to
gross volume (m3) minus the
volume of entrapped air,
W = Mass of water (kg) per m3
of concrete
C = Mass of cement (kg) per
m3 of concrete
Sc = Specific gravity of cement
P = Ratio of FA to total
aggregate by absolute volume
fa, Ca = Total masses of FA
and CA (kg) per m3 of concrete
respectively and
Sfa, Sca = Specific gravities of
saturated, surface dry fine
aggregate and coarse aggregate
fa= 472.29 Kg/m3
Ca= 1222.3 Kg/m3
Where,
24. Particulars Water Cement Fine
Aggregate
Coarse
Aggregate
Ratio 0.50 1 1.24 3.19
“Mix Proportions”
25. MD : Concrete Mix with Natural Coarse Aggregate
MD30: Concrete Mix at 30% replacement of NCA with RCA
MD50 : Concrete Mix at 50% of NCA with RCA
MD100: Concrete Mix at 100% replacement of NCA with RCA
WCNC: Concrete Mix without CNC Lathe waste
CNC1: Concrete Mix with 1% CNC Lathe waste (by weight of
concrete)
CNC2: Concrete Mix with 2% CNC Lathe waste (by weight of
concrete)
W/C : Water cement ratio
Abbreviations Used
27. Sr.
No.
Percentag
e of CNC
Load
(KN)
Calculation Compressi
ve
Strength
(N/mm2)
Average
Compressiv
e Strength
(N/mm2)
1 WCNC 370 (370x1000)/22500 16.44
17.56
2 CNC1 375 (375x1000)/22500 16.67
3 CNC2 440 (440x1000)/22500 19.56
Test results of 7 day compressive strength test for MD
28. Test results of 28 day compressive strength test for MD
Sr.
No.
Mix
Design
Load
(KN)
Calculation Compressive
Strength
(N/mm2)
Average
Compressive
Strength
(N/mm2)
1 WCNC 370 (370x1000)/2250
0
16.44
17.56
2 CNC1 380 (380x1000)/2250
0
16.89
3 CNC2 390 (390x1000)/2250
0
17.33
29. Test results of 7 day compressive strength test for MD30
Sr.
No.
Mix
Design
Load
(KN)
Calculation Compress
ive
Strength
(N/mm2)
Average
Compressive
Strength
(N/mm2)
1 WCNC 360 (360x1000)/22500 16.00
17.78
2 CNC1 390 (390x1000)/22500 17.33
3 CNC2 450 (450x1000)/22500 20.00
30. Test results of 28 day compressive strength test for MD30:
Sr.
No.
Mix
Design
Load
(KN)
Calculation Compre
ssive
Strength
(N/mm2)
Average
Compressiv
e Strength
(N/mm2)
1 WCNC 500 (500x1000)/22500 22.23
17.782 CNC1 540 (540x1000)/22500 24.00
3 CNC2 560 (560x1000)/22500 24.89
31. Test results of 7 day compressive strength test for MD50
Sr. No. Mix
Design
Load
(KN)
Calculation Compres
sive
Strength
(N/mm2)
Average
Compressiv
e Strength
(N/mm2)
1 WCNC 300 (300x1000)/22500 13.33
16.602 CNC1 400 (400x1000)/22500 17.78
3 CNC2 420 (420x1000)/22500 18.67
32. Test results of 28 day compressive strength test for MD50:
Sr.
No.
Mix
Design
Load
(KN)
Calculation Compress
ive
Strength
(N/mm2)
Average
Compress
ive
Strength
(N/mm2)
1 WCNC 700 (700x1000)/22500 31.11
32.75
2 CNC1 730 (730x1000)/22500 32.50
3 CNC2 780 (780x1000)/22500 34.66
33. Test results of 7 day compressive strength test for MD100:
Sr.
No.
Mix
Design
Load
(KN)
Calculation Compress
ive
Strength
(N/mm2)
Average
Compressi
ve
Strength
(N/mm2)
1 WCNC 320 (320x1000)/22500 14.10
15.19
2 CNC1 350 (350x1000)/22500 15.37
3 CNC2 360 (360x1000)/22500 16.10
34. Test results of 28 day compressive strength test for MD100
Sr. No. Mix
Design
Load
(KN)
Calculation Compressi
ve
Strength
(N/mm2)
Average
Compressiv
e Strength
(N/mm2)
1 WCNC 400 (400x1000)/22500 17.77
18.66
2 CNC1 420 (420x1000)/22500 18.67
3 CNC2 440 (440x1000)/22500 19.55
35. RESULT & DISCUSSION
In the experimental study we casted 72 cubes
with various proportions of CNC waste and
replacement of NCA to RCA.
It was found that the compressive strength which
was most suitable was obtained in 30%
replacement of NCA to RCA in addition to 2%
CNC waste.
36. 14.5
15
15.5
16
16.5
17
17.5
18
18.5
19
19.5
20
WCNC CNC1 CNC2
7 Day Compresssive
Strength
28 Day Compressive
Strength
0
5
10
15
20
25
30
WCNC CNC1 CNC2
7 Day Compressive
Strength
28 Day Compressive
Strength
Compressive Strength
Results for MD30
Compressive Strength
Results for MD
37. 0
5
10
15
20
25
30
35
40
WCNC CNC1 CNC2
7 Day Compressive
Strength
28 Day Compressive
Strength
0
5
10
15
20
25
WCNC CNC1 CNC2
7 Day Compressive
Strength
Series 2
Compressive Strength
Results for MD50
Compressive Strength
Results for MD100
38. DISCUSSION:
The tests on cubes were conducted.
The test done is Compressive strength shown in
the above tables with water cement ratio 0.5.
The results show that the concrete specimens
have more compressive strength when 50%
replacement is done with NCA by RCA.
39. In addition to that highest results are shown
when CNC waste is added in 2% by the
weight of concrete.
This shows a greater scope to use a large
amount of waste (CNC) with the
demolished waste i.e. Recycled aggregate.
40. 0
5
10
15
20
25
30
35
MD MD30 MD50 MD100
7 Day Compressive Strength
28 Day compressive Strength
Comparative Study for Compressive Strength
41. FUTURE SCOPE
It acts to be an Environmental savior. Due to lack
of dumping sites in the present scenario, so there is
need to save the land, this process leads as the
savior of environment.
From the above conclusion this process can be
assumed to be the economical process as less
transportation costs require and also the
construction cost is less.
42. To produce and secure a system of sale
based packed premixed concrete batches,
in which CNC waste and recycled coarse
aggregate concrete will be present.
43. References
1. Abbas Hadi Abbas, (2011), “Management of steel solid waste
generated from lathes as fibre reinforced concrete”, European
Journal of Scientific Research, Vol-No. 50, pp 481-485.
2. Dukovski V. And Vrtanoski G. (2005), “Design of Polymer concrete
main spindle housing for CNC Lathe”, Achievements in Mechanical
and Materials Engineering, Vol-No. 4, pp 695-698.
3. Dr. Prahallada M.C. and Dr. Prakash K.B., (2011), “lathe Machine
waste used in concrete”, International Journal of civil, structural,
environmental and infrastructure engineering research and
development, pp 1-7.
4. Fong F.K. Winston, Jaime S.K. Yeung and Poon C. S. (2002), “Hong
Kong Experience of Using Recycled Aggregates From Construction
And Demolition Materials In Ready Mix Concrete”, International
Workshop on Sustainable Development and Concrete Technology,
pp 267-275.
CNC
44. 5. How-Ji Chen, Tsong Yen and Kuan-Hung Chen (2003), “Use of
Building Rubbles as Recycled Aggregates”, Cement and Concrete
Research, pp 125-132.
6. Kumutha R., Vijai K. (2010), “Strength of concrete incorporating
aggregates recycled from demolition waste”, ARPN Journal of
Engineering and Applied Sciences, Vol-No. 5, pp 64-71.
7. Meddah Seddik Mohammed and Bencheikh Mohamed (2009),
“Properties of concrete reinforced with different kinds of industrial
waste fibre materials”, Construction and Building Materials, Vol-No.
23, pp 3196-3205.
8. Murali G., Vardhan Vivek C.M., Prabu R., Mohammad Z., Khan
Sadaquath Ali, Mohamed Aarif T. and Suresh T. (2012), “Experimental
investigation on fibre reinforced concrete using waste material”,
International journal of Engineering Research and Applications, Vol-
No. 2, pp 278-283.
9. Niranjana G., Dr. Mathew Samson and Dr. Jayabalan P. (2011),
“Structural strength enhancement of rigid pavement using waste
materials and fibres”, International journal of Engineering Research
and Applications, Vol-No. 2, pp 212-219.
CNC
45. 10. Parashar Ashish Kumar and Parashar Rinku (2012), “The effect
of size of fibres on compressive strength of M20 concrete mix”,
International journal of Engineering Research and Applications,
Vol-No. 2, pp 1232-1236.
11. Prasad M.L.V. and Rathish P. Kumar (2007), “Strength Studies
On Glass Fibre Reinforced Recycled Aggregate Concrete”, Asian
Journal Of Civil Engineering of Building And Housing, Vol-No.
8, pp 6677-690.
12. Shivaraja M., Kandasamy S. and Thirumurugan A. (2010),
“Mechanical Strength of fibrous concrete with waste rural
materials”, Journal of Scientific and Industrial Research, Vol-No.
69, pp 308-312.
13. Yaprak Hasbi, Aruntas Huseyin Yılmaz, Demir Ilhami, Simsek
Osman and Gokhan Durmus (2011), “Effects of the fine recycled
concrete aggregates on the concrete properties”, International
Journal of the Physical Sciences, Vol-No.6, pp 2455-2461.
CNC