Experimental Study of Crumb Rubber in Concrete

GRD Journals- Global Research and Development Journal for Engineering | Volume 2 | Issue 6 | May 2017 ISSN: 2455-5703

Experimental Study of Crumb Rubber in Concrete Bhavik Bhatt B. E. Student Department of Civil Engineering A. D. Patel Institute of Technology, Vallabh Vidhyanagar, Gujarat Parth Khandla B. E. Student Department of Civil Engineering A. D. Patel Institute of Technology, Vallabh Vidhyanagar, Gujarat

Tausif Kauswala Assistant Professor Department of Civil Engineering A. D. Patel Institute of Technology, Vallabh Vidhyanagar, Gujarat

Abstract Crumb rubber is a material produced by shredding and commutating used tires. Waste tire dumping, disposal of these materials or burning these tires cause serious health and environmental problems. On the other side the traffic intensity also increasing day by day and thus bearing capacities also increased the long term goal of the work is to find a means to dispose of the crumb rubber in concrete and still provide a final product with good engineering properties. Due to the depletion of natural sand it is required to use other material than sand being used as the fine aggregate in concrete. The innovative use of the crumb rubber in concrete formulations as a sand replacement in range of 0%, 2.5%,5%,7.5% and 10 % by weight for M-25 grade cement (OPC).

It will include an experimental review on the effects of CRM on compressive test and flexure test.

Keywords- Concrete, Crumb Rubber, Water Absorption Test, Compressive Test, Flexure Test

I. INTRODUCTION In order to prevent the environmental problem from growing, recycling Tire is an innovative idea or way in this case. Recycling Tyre is the processes of recycling vehicles Tyres that are no longer suitable for use on vehicles due to wear or irreparable damage (such as punctures). The cracker mill process tears apart or reduces the size of Tire rubber by passing the material between rotating corrugated steel drums. By this process an irregularly shaped torn particles having large surface area are produced and this particles are commonly known as crumb rubber. Early studies on the use of scrap tyres in asphalt mixes were very promising. They showed that rubberized asphalt had better skid resistance, reduced fatigue cracking, and achieved longer pavement life than conventional asphalt. Large benefits can result from the use of scrap tyre rubber in Portland cement concrete (PCC) mixtures, especially in circumstances where properties like lower density, increased toughness and ductility, higher impact resistance, and more efficient heat and sound insulation are desired.

II. MATERIALS AND METHODS 1) CEMENT: OPC of 53 grade with specific gravity of 3.15 was used in the present experimental study conforming to IS 12269 – 1987 Table 1: Physical Properties of Cement Sr.no Property Result 1 Initial setting time 35 min 2 Specific Gravity 3.148 3 Finess Modulus 1.5 %

2) FINE AGGREGATE: Locally available river sand having density of 1750 kg/m3 and fineness Modulus (FM) of 2.88 is used. The specific gravity was found to be 2.67 as per IS 383:1970 Table 2: Physical Properties of F.A Sr.No Property Result 1 Specific Gravity 2.55 2 Finess Modulus 2.36% 3 Water absorption 0.50% 3

3) COARSE AGGREGATE: Natural aggregate having density of 1800 kg/m and fineness modules (FM) of 8.11 was used.

The specific gravity was found to be 2.9 and maximum size of aggregate was 20mm.

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Experimental Study of Crumb Rubber in Concrete (GRDJE/ Volume 2 / Issue 6 / 025)

Table 3: Physical Properties of C.A Sr.No Property Result 1 Specific Gravity 2.63 2 Finess Modulus 6.75% 3 Water absorption 2.4%

4) WATER: Portable water was used available in college campus for mixing and curing of concrete cube.

5) CRUMB RUBBER: Crumb rubber is the name given to any material derived by reducing scrap tires or other rubber into uniform granules with the inherent reinforcing materials such as steel and fiber removed along with any other type of inert contaminants such as dust, glass, or rock. This is the physical compositions of the crumb rubber:Table 4: Physical Properties of Crumb Rubber Sr.No Property Result 1 Specific Gravity 1.78 2 Finess Modulus 4.48% 3 Water absorption 2% Table 5: Chemical composition of crumb rubber Major rubber components Test data % Acetone extract 10 Rubber hydrocarbon 250 Carbon Black content 30 Natural rubber content 31 Ash content 4

Fig. 1: Crumb Rubber

6) Mix Proportioning Concrete mix design in this experiment was designed as per the guidelines in IS 10262-2009. All the samples were prepared using design mix. M25 grade of concrete was used for the present investigation.

By weight (kg ) By volume (m3)

Table 6: Mix Proportioning Water Cement Fine Aggregate 170 457 536 0.37 1 1.17

Coarse Aggregate 1181 2.58

III. METHODOLOGY During the present study, 0%, 2.5%, 5%, 7%and 10% of traditional fine aggregate was replaced with Crumb rubber. Thirty cubes were casted for mechanical properties for checking the compression test and similarly five beams were prepared for flexural strength. The proper curing for the same was done as per the period mentioned in the IS code.

IV. TEST PROCEDURES A. Compressive Strength For compression test, 150 x 150 x 150 mm. sizes of cubes were taken. All the cubes were tested after wiping out the surface moisture. Three cubes for each mix of crumb rubber replaced with fine aggregate were tested at the age of 7 & 28 days curing

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Experimental Study of Crumb Rubber in Concrete (GRDJE/ Volume 2 / Issue 6 / 025)

using universal testing machine. The testing of cube in compressive testing machine is shown in Figure 2The results of compressive strength of cubes for 7 and 28 days curing are shown in Chart 1.

Fig. 2: Universal compressive Test machine

Fig. 3: Results of Compressive Strength

B. Flexural Strength Test For Flexural Strength Test, 500 x 100 x 100 mm sizes of beams were taken. All the beams were properly cured for 28 days as per AS PER IS: (516-1959). One Normal beam was casted and other four beams were compared for the flexural strength. The testing was done with Flexural strength apparatus.

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Experimental Study of Crumb Rubber in Concrete (GRDJE/ Volume 2 / Issue 6 / 025)

Fig. 4: Flexural Strength Apparatus

Fig. 5: Result of flexural strength C. Water Absorption For water absorption, the cubes of size 150 x 150 x 150 mm are kept into the curing tank as soon as been casted and the dry weight of each and every cube has been taken. Than after 20 days of the curing in the curing tank the weight is again taken after allowing it to dry for 2 to 3 hours. The table 7 shows the details of dry weight and wet weight of cube samples of different proportions and figure 6 shows the results of water absorption Table 7: Details of Dry and Wet Weight Samples Sr.NO Proportion Dry weight Wet weight 1 0% 8.5 8.58 2 2.50% 8.64 8.74 3 5% 8.73 8.89 4 7.50% 8.56 8.86 5 10% 8.54 8.9

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Experimental Study of Crumb Rubber in Concrete (GRDJE/ Volume 2 / Issue 6 / 025)

Fig. 6: Result of water Absorption

V. CONCLUSION From the results of the experimental study, the following conclusions were observed:1) The compressive strength for M 25 grade for all proportions comes within 25 N/mm2. So we can replace the crumb rubber upto 10 %.

2) The Flexural strength comes optimum when 5% of Crumb rubber is replaced by fine aggregate.

3) The water Absorption increases with the increase in proportion of the crumb rubber.

4) The concrete formed by the use of the crumb rubber also is cost effective because reduction in the use of Fine aggregate.

5) The product formed is also eco-friendly and does not harm the nature.

ACKNOWLEDGEMENT The authors Bhavik Bhatt, Parth Khandla wish to thank to the Ticitar Industry,Halol Vadodara for providing the Crumb rubber of 55 grade.We are also thankful to Management of A.D. Patel Institute of Technology, Vallabh Vidhyanagar for providing all the facilities for the experiment and last but not the least to our Guide Tausif Kauswala for providing sufficient support during experimental work.

REFERENCES [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11]

Strength Properties of Concrete Using Crumb Rubber with Partial Replacement of Fine Aggregate by S.Selvakumar Effect on compressive strength of concrete by using waste rubber as partial replacement of fine aggregate by Mr Abhishek Kumar Literature Review on Concrete Containing Crumb Rubber as a Sustainable Material By Ankit C. Patel A Study on Crumb Rubber: Opportunities for Development of Sustainable Concrete in byBhavik K. Daxini Effect of Crumb Rubber Material on Concrete Mix by Mohammed Islamuddin Faraz Rubberized Concrete: Needs of Good Environment (Overview) by Sachin Dass Prediction of crumb rubber concrete strength by M A. ElGawady Rubberized Concrete Made with Crumb Rubber by Yogender Antil Recent advances in the recycling of rubber waste by Bibin M Cherian M. S. Shetty - Concrete Technology S. Chand & company, latest 3rd addition.

M. L. Gambhir, - “Concrete Technology" McGraw-Hill Book Company, third addition.

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