“Application of CNC waste with Recycled Aggregate in Concrete Mix”

DEPARTMENT OF CIVIL ENGINEERINGKAVIKULGURU INSTITUTE OF TECHNOLOGY & SCIENCE

RAMTEK, NAGPUR (M.S.), PIN-441106 

Project GuideShri A. N. Dabhade

(Asst. Professor)

Mr. Jatin Khare (CE09063)

Introductory Project Reviewon

By

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Contents

1. Introduction2. Literature Review

2.1 CNC Lathe Waste2.2 Recycled Concrete

Aggregate3. Objective of Project4. Outline of Project5. 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..??Students

LadyEmployee NGO

Concrete Dependency (2E’s & 2Q’s)

CONCRETE

Environment

Economy

Quality

Quantity

Quality &

Quantity…!!

!

Economy &

Environment…!!!

In this aspect CNC

wasteis most

important….!!!

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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 in Infrastructure.

Large waste Generation.

Utilizing this waste for Concrete Mix.

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Recycled Aggregate Crushers

Resultant Aggregate

CNC WASTE

2E’s 2Q’s

RECYCLEDAGGREGATE

Resulting

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By this we can prepare A Large “Quantity”

of“Economic” Concrete

with Remarkable “Quality”

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Literature Review2.1 CNC Lathe Waste

G.Murali and C.M.Vivek Vardhan (2012) The objective of this paper was to get

experimental investigation on fibre reinforced concrete using waste materials.

waste materials like lathe waste, soft drink bottle caps, empty waste tins, waste steel powder.

used in dosage of 1% of total weight of concrete as fibres.

concrete blocks incorporated with steel powder increased its compressive strength by 41.25% and tensile strength by 40.81%.

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Ashish Kumar & Rinku Parashar (2012)

An effort has been made in this research to make a concrete mix using waste recycle spokes as reinforcement.

M20 concrete mix was proportioned with steel fibres.

The present research work highlights as to how the compressive strength of the concrete can be increased thus increasing its strength and durability.

Tests on Cement and sand i.e. specific gravity test, Moisture content, sieve analysis and gradation were done.

Study indicates that to increase compressive strength of concrete the steel fibres from bicycle spokes were used.

 

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Abbas Hadi Abbas (2012) 

This paper is achieved to study the effect of using industrial steel solid wastes that resulted from lathes as fibre reinforced concrete.

Many concrete cubes specimens were casted with and without steel waste fibres and were tested under compression.

The workability of fresh concrete, containing different ratios of steel waste, was carried out by slump test.

In terms of strength, strength-to-weight ratio, it can be used for construction of structures subjected to seismic, impact, dynamic loading.

    

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Dr. M.C. Prahallanda & Dr K.B. Prakash (2011)

In this research work an attempt is made to produce a hybrid fibre reinforced concrete by using waste metallic coiled fibres .

Waste plastic fibres having different modulus of elasticity are combined together for concrete better results.

To study the strength and workability properties of hybrid fibre reinforced concrete, here lath machine waste fibre was used in 3% and there was done the variation in the quantity of plastic fibres as 1,2,3%.

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G. Niranjana & Dr. Samson Mathew (2011)

 In this Study, the main objective was to

investigate the use of steel scraps as Steel Fibre reinforcement in FRC.

To analyze the characteristics of the waste steel scrap material which is available from the lathe is used as a steel fibre for pavement construction and to optimize the fibre content.

The characteristics compressive strength and flexural strength of various grades of cement concrete for various proportions of steel scraps are experimentally found out. American Concrete Institute Method of Mix Design (ACI) and the mix proportion were used for the investigation.

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Mohammed Seddik Meddah & Mohamed Bencheikh (2009)

According to this paper nowadays the use of different types of sub-products in cement -based materials has become a common practise in the concrete industry.

The feasibility of adding metallic and polypropylene by-product fibres as reinforcement of normal concrete was done.

Adding the waste polypropylene fibre with about 2% of the waste metal fibres it increased the flexural.

The results have shown that generally ductility, toughness and especially the post cracking behaviour of the post cracking behaviour of the WFRC are significantly improved.

 

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M Sivaraja and S Kandaswamy (2009)

In this study the fibre reinforced concrete mixes with locally available waste materials have been casted and are tested.

The contribution of steel, nylon, plastic etc in the mechanical strength enhancement was found to be greater than other fibres.

Apart from regular relations between FR concrete and strength, relations between different strength parameter corresponding to cylinder compressive strength were also proposed.

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G. Vrtanoski and V. Dukovski (2005)

Advanced composite materials have been widely used to improve various properties such as impact resistance, strength, durability etc.

This paper describes modelling, structural analysis of main spindle housing structure made by different materials.

The casting metal structure of the origin structure is substituted by the structure made with polymer concrete.

The superiority of polymer concrete has been demonstrated in the 50% reduction of the weight.

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2.2 Recycled Concrete AggregateR. Kumutha (2010)

The study was based on two recycled material, one is crushed concrete (CC) as coarse aggregate and other is crushed bricks (CB) as fine aggregate.

It is a recent study carried out locally to study the feasibility of using recycled aggregates in concrete.

The effect of replacing the natural coarse aggregates with crushed concrete and the natural fine aggregates with crushed brick aggregates on the properties of concrete is reported.

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Hasbi Yaprak & Huseyin Yilmaz Aruntas (2009)

In their paper they compared the property of fine recycled aggregate with natural fine aggregate.

Increase in the fine recycled aggregate causes increase in the water absorption ratio, air content and decrease in the specific gravity and compressive strength value.

Up to 50% fine recycled aggregate were used.

The use of fine recycled aggregate reduces energy consumption and overall construction cost.

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M. L. V. Prasad (2007)

In this study of glass fibre recycled concrete aggregate were used. The aim was to avoid brittleness of concrete by using glass fibre in concrete material.

To describe the salient properties of coarse aggregate natural aggregate is replaced with recycled aggregate with 25%, 50%, 75% and 100%.

The mechanical properties of concrete with replacement of Recycled Concrete Aggregate in Natural Aggregate with 0%, 50% and 100% replacements for no fibre and Glass Fibre Reinforced Concrete (GFRC) are being examined.

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How-Ji Chen (2002)In this research paper the building rubble

aggregate could be transformed into recycled concrete aggregate.

The unwashed recycled coarse aggregate affects the strength and mechanical properties. It is compared that the modulus of elasticity of recycled coarse aggregate with the natural coarse aggregate is 70%.

Through the recycling of Construction demolition waste debris new aggregate is obtained that can be reused and marketed as offering a complete range of building material.

The recycled coarse aggregate is weakest phase at a low water cement ratio.

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Winston F.K. Fong & Jaime S.K. Yeung (2002)

This research has been carried out in Hong-kong. For lower grade applications concrete with 100% coarse aggregate is allowed.

They specified the target strength up to 20 Mpa. Recycled fines are not to be allowed to use in concrete.

The replacement level of recycled coarse aggregate was 100% and 20% for concrete grades C20 and C25 to C35.

The moisture content in the recycled aggregate was then compensated during the mix design.

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S. M. Gupta & Baldev Setia (1988)

This research paper indicates that broken concrete obtained from demolition wastes can be used to produce useful aggregate which in turn can be used for making new concrete of acceptable quality.

In many areas good quality aggregate are not available locally.

It is expected that the demolition concrete constitute around 75% of total demolition waste.

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Objectives of project

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

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To use a large quantity of CNC lathe Machine waste and Recycled Concrete Aggregates for most eco-friendly concrete mix.

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To compare the strengths between conventional concrete and the concrete prepared by CNC waste and Recycled Aggregates.

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Understanding About Project

o By going through all the journals of Recycled Aggregate concrete, the

conclusion was-“The desired Strength could not be achieved by using only Recycled

Aggregates”

Thus in this Research work we are going to add CNC waste with Recycled Aggregates

in Concrete Mix.

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Outline of Project To collect CNC Lathe waste from Sunflag Steel

Enterprises Bhandara, Machine Shop of Mechanical Department, K.I.T.S. Ramtek, and Recycled Aggregate from demolition waste from the dumping site.

o (Collected materials….and further we are in touch to get more materials at the time of testing.)

To test the physical properties of Cement, Natural and Recycled aggregate for quality and performance.

To add CNC waste in 1% to 2% by weight of concrete.

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To Replace 0%, 20%, 40%, 60%, 80% & 100% of Recycled aggregate with 0.50, 0.60 & 0.70 water cement ratio.

The tests to be carried out on M20 grade concrete mix.oMix Proportions and Design is ready…We are

going to do practical investigations from 15th September 2012.

To perform various tests on concrete such as Slump test, Compaction factor test, Compressive Strength test, Flexural strength test, Split tensile test etc.

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To form concrete Beam for finding Modulus of elasticity, Permeability test, Carbonation test and Alkali Aggregate Reaction.

oSince these tests are important but Testing machines are not available…..!!!!

We contacted to Geotechnical Solutions PVT Ltd. of Nagpur for testing.

oContacted Dean R & D, KITS for financial Help for testing since its costly.

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Future Scope & Prospects

The Project Team is looking forward to achieve all objectives with in time fulfilling

the outline….!!!

We promise to work hard on this project with believe that we are going to publish

this Research work at least in Two Nation/International Journals.

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Conclusion Up till Now… Use of CNC Lathe waste with Recycled Aggregate

in Concrete mix may lead Economical, Quality and eco-friendly concrete.

As our pre-assumptions, if we will get desired strength then it will lead to solve the problem of CNC waste as it is a huge industrial waste.

In light vehicle Road Pavements & Home outdoors pavements as we use Steel bars so use of CNC waste may be a substitute of that.

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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.

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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.

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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.

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THANK YOU

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RESULT AND 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.

WCNC CNC1 CNC214

15

16

17

18

19

20

7 Day Compresssive Strength 28 Day Compressive Strength

WCNC CNC1 CNC20

5

10

15

20

25

30

7 Day Compressive Strength28 Day Compressive Strength

Compressive Strength Results for MD30

Compressive Strength Results for MD

WCNC CNC1 CNC20

5

10

15

20

25

30

35

40

7 Day Compressive Strength28 Day Compressive Strength

WCNC CNC1 CNC20

5

10

15

20

25

7 Day Compressive StrengthSeries 2

Compressive Strength Results

for MD50

Compressive Strength Results

for MD100

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.

DISCUSSION:

MD MD30 MD50 MD1000

5

10

15

20

25

30

35

7 Day Compressive Strength28 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 precast concrete batches, in which CNC waste and recycled coarse aggregate concrete will be present.