Project ppt guide shri a.n.dabhade sir 1

“Application of CNC waste with Recycled Aggregate

in Concrete Mix”

DEPARTMENT OF CIVIL ENGINEERINGKAVIKULGURU INSTITUTE OF TECHNOLOGY & SCIENCE

RAMTEK, NAGPUR (M.S.), PIN-441106

GuideShri A. N. Dabhade

(Asst. Professor)

(B.E. Civil Engineering)

Mr. Awanish Shukla

Introductory Project Reviewon

By

CNC

Contents

1. Introduction2. Objective3. Conclusion of Literature4. Work carried out5. Results & Discussion6. Future Scope7. References

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Introduction

Most countries are spending 8% of their GDP on infrastructure.

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Infrastructure and Concrete playing Major Role…..!!!

How it Relates to

Economy..??

What is CNC waste…????

CNC waste is waste obtained from Computer Numeric Controlled Lathe Machines.

Annual CNC waste collection is about 1200 tonnes.

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CNC WASTE

CNC WASTE

Steel Key-Role inInfrastructure.Large waste Generation.Utilizing this waste forConcrete Mix.

Recycled Aggregate Crushers

Resultant Aggregate

CNC WASTE

2E’s 2Q’s

RECYCLEDAGGREGATE

Resulting

CNC

Concrete Dependency (2E’s & 2Q’s)

CONCRETE

Environment

Economy

Quality

Quantity

In this aspect

CNC wasteis most

important….!!!

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By this we can prepare

A Large “Quantity”Of

“Economic” ConcreteWith

Remarkable “Quality”

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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

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

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.

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

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.

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.

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

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

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:

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

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).

Selection of Water/Cement ratio

26.6

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,

Particulars Water Cement Fine

Aggregate

Coarse

Aggregate

Ratio 0.50 1 1.24 3.19

“Mix Proportions”

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

Sr. No. Mix

Design

Cement

(Kg)

FA

(Kg)

NCA

(Kg)

RCA

(Kg)

Water

(Ltr)

CNC

(Kg)

9 MD 3.87 4.80 12.37 0.00 2.00 1.20

10 MD30 3.87 4.80 8.60 3.70 2.00 1.20

11 MD50 3.87 4.80 6.20 6.20 2.00 1.20

12 MD100 3.87 4.80 0.00 12.37 2.00 1.20

Mix Batches with CNC

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

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

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

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


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


Sr.

No.

Mix

Design

Load

(KN)


ive

Strength

(N/mm2)

Average

Compress

ive

Strength

(N/mm2)

1 WCNC 700 (700x1000)/22500 31.11

32.752 CNC1 730 (730x1000)/22500 32.50

3 CNC2 780 (780x1000)/22500 34.66


Sr.

No.

Mix

Design

Load

(KN)


ive

Strength

(N/mm2)

Average

Compressi

ve

Strength

(N/mm2)

1 WCNC 320 (320x1000)/22500 14.10

15.192 CNC1 350 (350x1000)/22500 15.37

3 CNC2 360 (360x1000)/22500 16.10


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

18.662 CNC1 420 (420x1000)/22500 18.67

3 CNC2 440 (440x1000)/22500 19.55

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.

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

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



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.

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.

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

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.

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.

References

1. Abbas Hadi Abbas, (2011), “Management of steel solid wastegenerated 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 Mechanicaland Materials Engineering, Vol-No. 4, pp 695-698.

3. Dr. Prahallada M.C. and Dr. Prakash K.B., (2011), “lathe Machinewaste used in concrete”, International Journal of civil, structural,environmental and infrastructure engineering research anddevelopment, pp 1-7.

4. Fong F.K. Winston, Jaime S.K. Yeung and Poon C. S. (2002), “HongKong Experience of Using Recycled Aggregates From ConstructionAnd Demolition Materials In Ready Mix Concrete”, InternationalWorkshop on Sustainable Development and Concrete Technology,pp 267-275.

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5. How-Ji Chen, Tsong Yen and Kuan-Hung Chen (2003), “Use ofBuilding Rubbles as Recycled Aggregates”, Cement and ConcreteResearch, pp 125-132.

6. Kumutha R., Vijai K. (2010), “Strength of concrete incorporatingaggregates recycled from demolition waste”, ARPN Journal ofEngineering 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 industrialwaste fibre materials”, Construction and Building Materials, Vol-No.23, pp 3196-3205.

8. Murali G., Vardhan Vivek C.M., Prabu R., Mohammad Z., KhanSadaquath Ali, Mohamed Aarif T. and Suresh T. (2012), “Experimentalinvestigation 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 wastematerials and fibres”, International journal of Engineering Researchand Applications, Vol-No. 2, pp 212-219.

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10. Parashar Ashish Kumar and Parashar Rinku (2012), “The effectof 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 StudiesOn Glass Fibre Reinforced Recycled Aggregate Concrete”, AsianJournal 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 ruralmaterials”, Journal of Scientific and Industrial Research, Vol-No.69, pp 308-312.

13. Yaprak Hasbi, Aruntas Huseyin Yılmaz, Demir Ilhami, SimsekOsman and Gokhan Durmus (2011), “Effects of the fine recycledconcrete aggregates on the concrete properties”, InternationalJournal of the Physical Sciences, Vol-No.6, pp 2455-2461.

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THANK YOU

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Project ppt guide shri a.n.dabhade sir 1

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