Executive Summary : | Production of cement leads to depletion of natural resources (limestone) and is energy intensive, causing environmental pollution (1 tonne cement = 1 tonne CO2), and contributing to 7% global CO2 Emissions. Due to increasing road and building construction projects, the demand for sand mining continues to grow and recycling of the scrap tyre to produce useful products or materials would be a viable solution. Project would involve replacing sand with materials such as nanoflyash, flyash and Crumb rubber. Waste utilizations of flyash, GGBS and Crumb Rubber from scrap tyres reduces pollution level mainly in air, land and water. Turning the waste into valuable resources and products provides low carbon footprint. The aim of the project is to reduce the use of cement and replace the same with other materials. Categories of wastes utilized in green concrete are (i) agriculture waste eg Rice huskash, corn cub ash, saw dust ash; (ii) Industrial waste are flyash, granulated blast furnace slag and silica fumes; (iii) Municipal waste eg Rubber Plastic, paper etc. Ferrocement-made up of rich cement mortar and wire mesh reinforcement. Advantages of this technology would be a high ratio of strength to weight in comparison to R.C.C Cost-effectiveness compared to R.C.C; lower intensity of material use; speedy process of construction; flexibility with regards to cutting, drilling & joining High acceptability in terms of shape and form.
FERROCEMENT consists of Ferro (steel or iron) and cement (a binder or cementitious substance). Fibrocement-made up of rich cement mortar and wire mesh reinforcement. Advantages of Ferrocements are A high ratio of strength to weight in comparison to R.C.C: Cost-effectiveness compared to R.C.C; Lower intensity of material use; Speedy process of construction; Flexibility with regards to cutting, drilling & joining: High acceptability in terms of shape and form. GEOPOLYMERS is inorganic aluminosilicate polymer which is synthesized from silicon and aluminium material of geological origin, The ingredients are source material (rich in Silicon and Aluminium) Alkaline solution. Curing would be heat curing or steam curing. Mechanical properties of geopolymer mortar and short-term and long-term durability of geopolymer mortar will be assu pererimental studies of the impact strength of Potassium based cement less ferrocement panels by dropping impact test will be done. This study is aimed at developing potassium-based geopolymer ferrocement panels with GGBS and flyash as source materials and crumb rubber and plastic pellets as a partial replacement of sand. The material so produced will be studied by impact load and durability test. The ingredients source materials (rich in Silicon and Aluminium) + Alkaline solution. Curing will be heat curing or steam curing. Mechanical properties of geopolymer mortar and short term and long term durability of geopolymer mortar will be assessed. Experimental studies of the impact strength of Potassium based cement-less ferrocement panels by dropping impact tests will be done. This study is aimed at developing potassium based geopolymer ferrocement panels with GGBS and flyash as source materials and crumb rubber and plastic pellets as a partial replacement of sand. The material so produced will be studied by impact load and durability test. The ingredients source materials (rich in Silicon and Aluminium) + Alkaline solution; curing will be heat cured or stream cured. Characteristics of Geopolymers are less shrinkage: less permeability, less flammable and emit no toxic fumes in fire and more freeze-thaw resistant, more resistant to acid attack. better fire safety, strength, durability & service life. The durability can be ascertained by accelerated and fire endurance test for both crumb rubber and plastic pellets as partial replacement of sand in geopolymer mortar. Finally, the test report would be compared to the conventional material/product. Objective: A need is felt to develop new impact resisting panels by utilizing industrial waste materials such as fly ash, slag and crumb rubber that will overcome the limitation of the existing systems, which will meet the requirements of simple design, ease in fabrication, construction, less maintenance and economy while achieving desired impact resistance of structures. The proposed research includes both analytical and experimental investigations. |
Outcome/Output: | Output: Techno-economic evaluation and characteristics of the final product in terms of strength, durability, impact load, fire safety (flammability), etc, and parameter-wise, should be done vis-à vis conventional technology and products at the end (final) of the project. The commercial viability of replacement of sand vis-a-vis alternate material(s) for mass production/replacement of the use of cement in a building. Feasibility of various uses of the input materials and the final products) vis-a-vis construction (as a replacement for cement). The extent of minimisation of CO2 emission (and carbon footprint) and reduction in hazardous wastes from this method.
Outcome: Assessment of the extent of reduction in waste dumping and landfilling and thus reducing the environmental pollution. The extent of reduction in carbon footprint. Since it is Zero cement concrete, the extent of reduction in the cost of production of cement in the final product. Feasibility of extent of use of Industrial waste products such as fly ash, slag, and crumb rubber used as an alternate material to cement and recycled to manufacture structural elements can help in the construction of low-cost housing. Hot water storage tanks, silos, etc. The Indian construction industry may get a new innovative cheap product for rapid construction. |
