Author
Blessen Skariah Thomas
Other affiliations: Malaviya National Institute of Technology, Jaipur, Jaipur National University, University of Birmingham ...read more
Bio: Blessen Skariah Thomas is an academic researcher from Shanghai Jiao Tong University. The author has contributed to research in topics: Cement & Compressive strength. The author has an hindex of 18, co-authored 35 publications receiving 1640 citations. Previous affiliations of Blessen Skariah Thomas include Malaviya National Institute of Technology, Jaipur & Jaipur National University.
Papers
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TL;DR: In this article, the authors present an overview of some of the research published regarding the fresh and hardened properties of rubberized concrete and show that there is a promising future for the use of waste tire rubber as a partial substitute for aggregate in cement concrete.
Abstract: Disposal of waste tire rubber has become a major environmental issue in all parts of the world. Every year millions of tires are discarded, thrown away or buried all over the world, representing a very serious threat to the ecology. It was estimated that almost 1000 million tires end their service life every year and out of that, more than 50% are discarded to landfills or garbage without any treatment. By the year 2030, there would be 5000 million tires to be discarded on a regular basis. Tire burning, which was the easiest and cheapest method of disposal, causes serious fire hazards. Temperature in that area rises and the poisonous smoke with uncontrolled emissions of potentially harmful compounds is very dangerous to humans, animals and plants. The residue powder left after burning pollutes the soil. One of the possible solutions for the use of waste tire rubber is to incorporate into cement concrete. This paper presents an overview of some of the research published regarding the fresh and hardened properties of rubberized concrete. Studies show that there is a promising future for the use of waste tire rubber as a partial substitute for aggregate in cement concrete. It was noticed from literatures that workable concrete mixtures can be made with scrap tire rubber and it is possible to make light weight rubber aggregate concrete for some special purposes. Rubberized concrete shows high resistance to freeze-thaw, acid attack and chloride ion penetration. Use of silica fume in rubberized concrete enables to achieve high strength and high resistance to sulfate, acid and chloride environments.
408 citations
TL;DR: In this article, the results of an experimental investigation to comparatively study the depth of chloride penetration, resistance to acid attack and macrocell corrosion of rubberized concrete and control mix concrete were presented.
300 citations
TL;DR: In this paper, the suitability of waste tyre rubber in cement concrete as a partial replacement for natural river sand was investigated, and it was observed that discarded tyre rubber may be utilized for the partial replacement of natural fine aggregates up to 7.5% without enough reduction in its desired strength.
197 citations
TL;DR: In this article, the suitability of scrap tire rubber as a partial substitute for natural fine aggregate in high strength cement concrete was analyzed using Scanning Electron Microscopy (SEM).
195 citations
TL;DR: In this paper, the suitability of copper tailing in cement concrete as a partial replacement of natural river sand was investigated, and it was observed that copper tailings may be used for the partial replacement for natural fine aggregates till 60% replacement, with water-cement ratios 0.4, 0.45 and 0.50.
154 citations
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TL;DR: A review of the published enhancement methods for recycled concrete aggregate can be found in this paper, where the authors suggest that carbonation treatment is an efficient and feasible method for improving the mechanical properties and durability of recycling concrete aggregate.
647 citations
TL;DR: In this article, the authors present an overview of some of the research published regarding the fresh and hardened properties of rubberized concrete and show that there is a promising future for the use of waste tire rubber as a partial substitute for aggregate in cement concrete.
Abstract: Disposal of waste tire rubber has become a major environmental issue in all parts of the world. Every year millions of tires are discarded, thrown away or buried all over the world, representing a very serious threat to the ecology. It was estimated that almost 1000 million tires end their service life every year and out of that, more than 50% are discarded to landfills or garbage without any treatment. By the year 2030, there would be 5000 million tires to be discarded on a regular basis. Tire burning, which was the easiest and cheapest method of disposal, causes serious fire hazards. Temperature in that area rises and the poisonous smoke with uncontrolled emissions of potentially harmful compounds is very dangerous to humans, animals and plants. The residue powder left after burning pollutes the soil. One of the possible solutions for the use of waste tire rubber is to incorporate into cement concrete. This paper presents an overview of some of the research published regarding the fresh and hardened properties of rubberized concrete. Studies show that there is a promising future for the use of waste tire rubber as a partial substitute for aggregate in cement concrete. It was noticed from literatures that workable concrete mixtures can be made with scrap tire rubber and it is possible to make light weight rubber aggregate concrete for some special purposes. Rubberized concrete shows high resistance to freeze-thaw, acid attack and chloride ion penetration. Use of silica fume in rubberized concrete enables to achieve high strength and high resistance to sulfate, acid and chloride environments.
408 citations
TL;DR: In this article, the results of an experimental investigation to comparatively study the depth of chloride penetration, resistance to acid attack and macrocell corrosion of rubberized concrete and control mix concrete were presented.
300 citations
TL;DR: The properties of waste tyre rubber and engineering applications have been previously reported in a range of publications with respect to the environmental, economic, and technical factors as discussed by the authors, with a focus on geotechnical engineering applications, such as earthworks and infrastructure construction.
Abstract: Waste tyres and their accumulation is a global environmental concern; they are not biodegradable, and, globally, an estimated 1.5 billion are generated annually. Waste tyres in landfill and stockpiles are renowned for leaching toxic chemicals into the surrounding environment, acting as breeding grounds for mosquitoes, and fuelling inextinguishable fires. The properties of waste tyre rubber and engineering applications have been previously reported in a range of publications with respect to the environmental, economic, and technical factors. This study compiles and reviews this research with a focus on geotechnical engineering applications, such as earthworks and infrastructure construction. The applications of waste rubber in construction materials includes cementitious concrete, asphalt concrete, and granular materials for earth structures. Crumb rubber, when used as a sand replacement in flowable concrete fill, improved ductility and strength-to-weight ratio. A 40 MPa concrete mix with 0.6% rubber crumb content exhibited optimal strength and air entrainment capabilities, displaying minimal damage after 56 freeze/thaw cycles. Rubber, as a partial replacement for aggregate in road base and sub-base layers, adversely affected the California Bearing Ratio (CBR) of the graded aggregate base course. Rubber-soil mixtures as the interface of foundation and structure yielded a 60–70 % reduction in vertical and horizontal ground accelerations when subjected to earthquake simulation modelling. There is concern regarding the toxicity of waste rubber incorporated products due to leachates of heavy metals and other chemicals common in tyres. Further comprehensive studies in this area are needed. Leachate studies should be conducted under different pH and liquid to solid ratios.
247 citations
TL;DR: In this paper, the performance of concrete mixtures incorporating 5%, 7.5% and 10% of discarded tyre rubber as aggregate and cement replacements was evaluated. But the results were limited to two sets of concrete specimens.
244 citations