DESIGN OF POLYESTER (RECRON-3S) FIBER REINFORCED FLEXIBLE PAVEMENT

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1 International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 4, April 2017, pp Article ID: IJCIET_08_04_138 Available online at ISSN Print: and ISSN Online: IAEME Publication Scopus Indexed DESIGN OF POLYESTER (RECRON-3S) FIBER REINFORCED FLEXIBLE PAVEMENT G Pradeep Reddy, G Tarun Krishna UG Student, Department of Civil Engineering, K L University, Andhra Pradesh, India K Hemantha Raja, S Shahabas Assistant Professor, Department of Civil Engineering, K L University, Andhra Pradesh, India ABSTRACT The present paper is utilized to find the nature of the bitumen. From this we arrive at a reason that the adjustment in the strength of bitumen by taking diverse extents of Polyester (Recron-3S) Fiber. For this we identified the properties of aggregates (We take aggregates as per Month Table) and for bitumen properties we conducted the penetration test, ductility test, softening ball point, Flash and fire test and marshal stability test. Bitumen and filler material and we find flow, stability and bulk density. Key words: Modified Bitumen, Flexible Pavement, Polyester (Recron-3S) Fiber. Cite this Article: G Pradeep Reddy, G Tarun Krishna, K Hemantha Raja and S Shahabas, Design of Polyester (Recron-3S) Fiber Reinforced Flexible Pavement. International Journal of Civil Engineering and Technology, 8(4), 2017, pp INTRODUCTION Now days we required the road conditions like more stable and strong. But most of the pavements due to weather conditions and traffic conditions the pavements are getting deteriorated by rutting, pot holes etc. So we need to improve the properties of the bitumen. To increase the property of bitumen we add Fiber. One of the Fiber Polyester (Recron-3S) Fiber is a artificial material obtained from polyester. Polyester (Recron-3S) keeps the smaller scale shrinkage splits created amid hydration. This Fiber helps to resist the cracks obtained by heavy loaded vehicles. It also helps to increase in flexural strength to the pavement. Bitumen is viscous fluid material which has binding nature. Bitumen has an adhesive property which binds all the components in it without any changes in their properties and it has and is insoluble and it act as sealant. Bitumen is mixed with coarse aggregates while constructing flexible pavements due to adding of bitumen the life span of pavements will increase and it provides flexible nature and it provides a good bonding and friction between vehicle wheels and surface of the road. But the main problem in the flexible pavements are due to high temperatures the volatile compounds present in the bitumen are evaporate and the bitumen editor@iaeme.com

2 G Pradeep Reddy, G Tarun Krishna, K Hemantha Raja and S Shahabas will become hard due to that when the traffic loads are heavy the pavement will deteriorated and in winter seasons and rainy seasons due to moisture and water the pavement may damage. To prevent this we add the Polyester(Recron-3S) Fiber at a certain proportion to the bitumen mix by adding this Fiber, it can absorb water and it increase the tensile strength and it is resistant to abrasion. By using Polyester (Recron-3S) Fiber in bitumen it protects from the fatigue cracking and deformation on the pavements. Bitumen is of different types: 2. MATERIALS USED 2.1. Aggregate It is a term for the mineral materials, for example, sand, rock and pulverized stone that are utilized with a coupling medium for example, water, bitumen, Portland Concrete, lime and so forth to shape compound materials. The properties of the aggregates are shown in the Table: 1 Table 1 Aggregate Test Values and their Accepted Values 2.2. Polyester (Recron-3S) Fiber Polyester (Recron-3S) Fiber is a artificial Fiber. Polyester (Recron-3S) polymers have discovered noteworthy business applications in Fibers. Polyester (Recron-3S) Fiber helps to prevent the micro shrinkage cracks caused due to hydration in the bitumen pavement. It also helps to increase flexural strength of the pavement Bitumen The bitumen we used in this experiment is 60/70. This type of grade is mainly used for good flexible pavements design mixes with chips. This bitumen type has good properties. The main property of this grade is that it has more viscosity when compare to other grades. 3. OBJECTIVES Sl.No Test Results Acceptable value 1 Aggregate crushing value 25.6% 30%(maximum) 2 Impact value 20.2% 10 20(strong) (good) 3 Specific gravity Water absorption % 5 Los Angeles abrasion test 32.1% 40%(maximum) Table 2 Bitumen Test Values and their Accepted Values Sl.No Tests Results Acceptable Value 1 Ductility 79 65(min) 2 Softening Point 67 47(min) 3 Penetration 58 60/70(bitumen type) 4 Flash (min) 5 Fire (min) To study the properties of bitumen by adding different proportions of Polyester(Recorn-3S) To modify the strength of the bitumen and the sample by using Polyester(Recorn-3S) Fiber editor@iaeme.com

3 Design of Polyester (Recron-3S) Fiber Reinforced Flexible Pavement 4. METHODOLOGY First we collect the Polyester (Recron-3S) Fiber and cut them into pieces of 2cm length. Then we find the aggregates properties by conducting the crushing test, impact test, specific gravity and water absorption and abrasion test Aggregate Impact Test Take the aggregates that pass through 12.5 mm and 10 mm with pan below the sieves and collect the aggregate which retain on 10 mm sieve. Fill the aggregates up to 1/3 rd of the cylinder and tamper with tamper rod for 25 times and again fill it up to 2/3 rd level and again tamper and fill up to the level and the place the cylinder at the bottom of the impact machine and lift the hammer up to 300 mm and drop it freely until 15 blows. After that pass the aggregate through 2.36mm sieve and note down the readings Crushing Test Collect the aggregates which retain on 10 mm sieve and fill the cylinder by 1/3 proportion giving tampering of 25 times after filling the aggregates place it in the crushing machine and apply the load of 50tonnes, 5tonnes per minute after that sieve the aggregates on 2.36mm sieve and notes the readings Specific Gravity and Water Absorption Test Collect the aggregates and place in the wire basket and immersed the aggregates into water and keep it for 24 hours and after that clean the aggregates by using cloth and note the readings Penetration Test First we heat the bitumen sample and cool it for 24 hours and then place the bitumen mold in the bottom base of penetration machine and set the time and on the instrument then note the reading Softening Point Place the bitumen in the rings and fix it well and place the ball and put the whole apparatus in to the water bath and switch on the temperature and at certain temperature the ball penetrate through the bitumen and touch the bottom the lid Marshall Mix Design Marshall Mix design is used to find the optimum binder content of the bitumen, Stability, flow value and bulk density for the bitumen content Select the different types of aggregates for grading by using MORTH table. First we need to assemble the mold with a base plate and we need to apply sum lubricate. Before that we need to sieve the aggregate as par the MORTH table. And then we need to take the sample of aggregate as par the MORTH table and heat the sample up to certain temperature by using pan. And add the bitumen content to the sample and mix thoroughly then take it into the mold immediately. And give 75 blows on the both sides of the sample by using mechanical or manual. Put the sample ideally for 24 hours after that remove the sample from the mold editor@iaeme.com

4 G Pradeep Reddy, G Tarun Krishna, K Hemantha Raja and S Shahabas Take the water bath at 60degrees for the sample after that clean the surface of the sample Then do the marshal stability test and note down the proving ring readings by this values 5. MATERIAL PROPOSITION & WEIGHTS 5.1. Nominal Mix By taking various proportions of aggregates of various sizes helps to fill the voids and brings a greater stability to the mixture. The various sieve sizes taken for getting the required quantity of aggregate and weights are as follow: Table 3 Sieve Sizes and the Aggregate Weights Sieve Size (mm) Aggregate Weight Taken (grams) Pan 4.83 Cement Total Weight Weights of Material We have taken bitumen content as per the total weight of the aggregate grams. 5% of Bitumen = ( *5)/100 = grams. 5.5% of Bitumen = ( *5.5)/100 = grams. 6% of Bitumen = ( *6)/100 = grams. We have taken Fiber as per the total bitumen taken for each sample that is: Table 4 Fiber Percentages and Weights Taken S.No Bitumen Percentages 1 5% 2 5.5% 3 6% Fiber Percentages Weight of Fiber Taken(grams) 2% (2*60.116)/100 = 1.2 4% (4*60.116)/100 = 2.4 6% (6*60.116)/100 = 3.6 2% (2*66.128)/100 = % (4*66.128)/100 = % (6*66.128)/100 = % (2*72.14)/100 = % (4*72.14)/100 = % (6*72.14)/100 = editor@iaeme.com

5 Design of Polyester (Recron-3S) Fiber Reinforced Flexible Pavement 6. RESULTS & DISCUSSIONS 6.1. Marshal Tests on Various Mixes Various Mix types their propositions and the values of unit weight, stability, flow, percentage of air voids and percentage of voids filled by bitumen obtained. Table 5 Mix Types and the Values Obtained Mix C Mix_1 Mix_2 Mix_3 Bitumen Percentage Flow (mm) Average Marshal Stability (kn) Unit Weight(GM) (g/cm 2 ) Percentage of Air Voids in Total Sample Percentage of Voids Filled by Bitumen Unit Weight Figure 1 Unit Weight Vs % of air voids Figure 2 % of Air Voids Vs editor@iaeme.com

6 G Pradeep Reddy, G Tarun Krishna, K Hemantha Raja and S Shahabas % of voids filled by bitumen Figure 3 % of Voids Filled by Bitumen Vs 5 4 Flow Stability Value Figure 4 Flow Vs 7. CONCLUSION Figure 5 Stability Vs The unit weight is more for nominal mix when compared to the modified bitumen where in modified bitumen the unit weight is least for the mix-3 proportion. The void percentage is more for the nominal bitumen mix when compared to the modified bitumen mix. The least percentage value of voids is 2.16% editor@iaeme.com

7 Design of Polyester (Recron-3S) Fiber Reinforced Flexible Pavement Void in the nominal mix is mostly filled by bitumen where as in modified bitumen the voids are filled by bitumen and also Fiber so the bitumen percentage for voids fill is less when compared to nominal mix. The flow value is more for the nominal mix where the modified bitumen is having much lesser than it. Where in nominal the maximum flow value is 4.59mm where as in modified bitumen mix it is 2.89mm. The stability value is higher for the Mix_3 proportion than others. The maximum stability value is kN where as for nominal mix the maximum value is kN. REFERENCES [1] Al-Qadi IL, ElSeifi M, Leonard D (2003). Development of an Overlay Design Model for Reflective Cracking with and without Steel Reinforcing Nettings. AAPT, 72: [2] Brown ER, Mallick RB, Haddock JE, Bukowski J (1997). Performance of stone matrix asphalt (SMA) mixtures in the United States. NCAT Report No [3] Bushing HW, Antrim JD (1968). Fiber Reinforcement of Bituminous Mixtures. AAPT. [4] Bushing HW, Elliott EH, Reyneveld NG (1970). A State of the Art Survey of Reinforced Asphalt Paving. AAPT, 39: [5] Kamil E. Kaloush, Waleed A. Zeiada, Krishna P. Biligiri, Maria C. Rodezno, Jordan Reed, Evaluation of Fiber-Reinforced Asphalt Mixtures Using Advanced Material Characterization Tests. [6] M.K Goyal,"Recron 3s for crack-free construction",the Indian Concrete Journal, March [7] Muhammad Nawazish Husain, Praveen Aggarwal," Application of Recron 3S Fibre in Improving Silty Subgrade Behaviour",IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), Volume 12, Issue 2 Ver. VI (Mar - Apr. 2015). [8] O.S. Abiola a, W.K. Kupolati a, E.R. Sadiku b, J.M. Ndambuki, Utilisation of natural Fiber as modifier in bituminous mixes: A review, Science Direct, (2013). [9] Remadevi M. Anjali G. Pillai, Elizabeth Baby George, Priya Narayanan, Sophiya Sunny, Study of Fiber Reinforced Bituminous Concrete, International Journal of Engineering Research and Development, Volume 10, Issue 4, PP (2014). [10] Satish chandra, M.N.Viladkar, Prashanth P.Nagrale," Mechanistic Approach for Fiber- Reinforced Flexible Pavements", Journal of Transportation Engineering Asce / January [11] T.Sandeep," Recron Medium Strength Fibre Reinforced Concrete ", International Journal in IT and Engineering, Impact Factor , Vol.03 Issue-04, (April, 2015) editor@iaeme.com