Authors: Anjali Hasban, Ashish Waje, Vaishnavi Vhatte, Samruddhi Shinde, R. A. Binayake
DOI Link: https://doi.org/10.22214/ijraset.2022.42031
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The present work was carried out to propose the use of processed waste plastic (P.E.T) and steel slag aggregate (SSA) for the modification of bituminous mix in order to cater the need of the enhancing the performance of flexible pavements as well as to minimize the quantum plastic waste in society as they have been posing a serious threat to environment. There are two methods available namely wet and dry process of incorporating waste plastics into bituminous mixes. Research work has been carried out by adopting the wet process. In this study, wet process is carried out on the grade1 suggested by MoRTH and IRC for BC mixes. The Marshall method of mix design was adopted using Penetration grade 60/70 binder to find the optimum binder content for all conventional as well as modified bituminous mixes and to find out optimum plastic and steel slag content that can replace these conventional materials. Marshall Specimens were prepared at bitumen contents of 4.0, 4.5, 5.0% by weight to find optimum bitumen content, with P.E.T content of 0%, 4%, 6%, 8%, 10% by weight of bitumen and with steel slag aggregate content of 5%, 10% and 15% to find out respective limits and their properties. Marshall Stability, Flow value, Marshall Quotient, Air voids (Vv), Voids in Mineral Aggregates (VMA), Voids Filled with Bitumen (VFB), Retained Stability, were determined by adopting the wet process and compared with neat BC mixes. From the test results, it is clear that the Marshall Test values for modified mixes was much higher as compared to conventional bituminous mixes.
I. INTRODUCTION
This project work includes the performance and fatigue behavioral study of Bituminous Mix. Bituminous Mix is mixture of coarse aggregate, fine aggregate, bitumen, and filler material. The guidelines regarding Bituminous mix are given in IRC: 29-1988 Specification for Bituminous Mix (Asphaltic Mix) for road pavement and Ministry of Road Transport and Highway Authority in India, 2001 (MoRTH). All work done in this project is according to the guidelines laid in IRC and MoRTH. Bituminous concrete mix is used in wearing course of flexible pavement. Bituminous binders are widely used by paving industry. Generally, all the hard surfaced pavement types are categorized into stability analysis is essentially a problem of optimization namely the determination of the slip surface that yields minimum factor of safety 2 groups:
II. LITERATURE REVIEW
III. MATERIALS
The basic materials used in construction of any flexible pavements are as follows1. Stone Aggregates of varying sizes. (6mm,10mm,12mm,20mm etc.) 2. Bitumen (VG-30 grade in Maharashtra) 3. Mineral Filler The materials which are to be added to above materials to replace them to a limited extent to enhance properties are4. Waste P.E.T plastic. (processed) 5. Steel Slag of a particular form. (Chips or having aggregate like structure)
The above Fig shows the bitumen of grade VG-30 which was used as per the suitability for Maharashtra state. Bitumen is the main binder element, and its function is to hold the ingredients together. In above figure heating of bitumen is shown, for achieving its temperature and making it viscous/soft for further use and to analyses periods of increased/decreased landslide active.
The above Fig shows the waste P.E.T plastic. P.E.T stands for Polyethylene Terephthalate, in simple manner it is nothing but the plastic from which plastic bottles for storing water, detergents, phenyl etc. is made. The waste form of such plastic is collected from Municipal Plants and after several processes like cleaning, drying, shredding, and cutting it is used as a modifier to bitumen or to replace bitumen content up to certain extent. It is also a binding element.
The above Fig shows the steel slag of a particular form having aggregate like structure or a chip form. This type of steel slag is incorporated as a replacement to a conventional stone aggregates up to a certain limit to enhance properties like bearing capacity etc.
IV. METHODOLOGY
a. Cleaning of plastic.
b. Shredding and cutting into fine pieces.
c. Collection of bitumen, stone aggregates, and steel slag from the supplier.
2. Ingredient Testing and characterization of steel slag used
Following tests were carried out on ingredient materials before their use:
a. Tests on Aggregates.
b. Tests on Bitumen.
c. Test on Plastic.
d. Tests on Steel Slag
e. Test on Conventional and Modified molds
V. RESULTS
The graph in above Fig shows the variation of Marshall Stability for varying bitumen content. From above the Optimum Bitumen Content for conventional mix was found out. It is the content of bitumen in percentage for which maximum stability is achieved.
The above Fig shows the Marshall Stability values in KN for various P.E.T and steel slag combinations. For example- 4% P.E.T as a replacement to bitumen and 8% steel slag as a replacement to aggregates by total weights.
The above Fig shows the Marshall Flow values in mm for various P.E.T and steel slag combinations. It is observed that result starts falling(negative) after point of 8% P.E.T and 15% steel slag addition. IRC specification for Marshall Flow ranges between 2mm-5mm.
The optimum bitumen content was found out to be 4.5% It is seen that up to 8% use of plastic and 15% of steel slag improved results can be achieved. The overall cost of laying the road of approximately 3.75m can be cut down up to Rs.36000/- per kilometer by implementation of plastics in road construction. This is because around one ton of bitumen is saved which costs for around Rs.35000- 37000 (Dr. R Vasudevan).
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Copyright © 2022 Anjali Hasban, Ashish Waje, Vaishnavi Vhatte, Samruddhi Shinde, R. A. Binayake. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Paper Id : IJRASET42031
Publish Date : 2022-04-29
ISSN : 2321-9653
Publisher Name : IJRASET
DOI Link : Click Here