V. N. Kanthe; S. V. Deo; M. Murmu
Abstract
The assessment of environmental impact on concrete is an important aspect for its durability. The use of supplementary cementitious materials (SCMs) in the concrete can be enhanced the durability. This makes concrete sustainable and reduced environmental issues. In this research paper illustrate the ...
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The assessment of environmental impact on concrete is an important aspect for its durability. The use of supplementary cementitious materials (SCMs) in the concrete can be enhanced the durability. This makes concrete sustainable and reduced environmental issues. In this research paper illustrate the experimental study on the performance of triple blend concrete made up of fly ash (FA) and rice husk ash (RHA) along with ordinary Portland cement (OPC). The current research the concrete composition was used as 20, 30 and 40% cement replacement by FA and RHA. The durability properties such as ultrasonic pulse velocity (UPV), electrical resistivity (ER), water absorption and carbonation depth of triple blend concrete were determined, and for microstructure performance formation factor and Scanning Electron Microscope (SEM) were performed. The improvement in durability was observed up to 40% replacement of cement. The durability of concrete improves with increase in formation factor. The SEM images proved the improvement in particle packing of concrete.
B. Rath; S. Deo; G. Ramtekkar
Abstract
Fly ash and pond ash are two by-products of thermal power stations. These industrial wastes require a lot of landfill area and are also causing harm to the environment. By using locally available fly ash and pond ash as partial replacement of cement and fine aggregate, a green concrete shall be produced. ...
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Fly ash and pond ash are two by-products of thermal power stations. These industrial wastes require a lot of landfill area and are also causing harm to the environment. By using locally available fly ash and pond ash as partial replacement of cement and fine aggregate, a green concrete shall be produced. These by-products substantially reduce the consumption of natural lime and sand for sustainable development. Before using them in concrete, a deep study should be conducted on the physical behavior of concrete with these industrial by-products. The objective of this paper is to investigate the influence of coarse fly ash, pond ash, and fiber on the early age shrinkage behavior of concrete. In this research cement is partially replaced with fly ash and sand is partially replaced with pond ash individually and simultaneously in addition to 0.1% of glass fiber. Suitability of these materials considering cost is suggested for practical use.
Environment
V. Kanthe; S. Deo; M. Murmu
Abstract
In this research paper, the effect on autogenous healing in concrete by cementitious material such as fly ash (FA) and rice husk ash (RHA) are reported. The utilization of waste byproduct are the interest in research for healing of concrete. The non-destructive testing and microstructure analysis were ...
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In this research paper, the effect on autogenous healing in concrete by cementitious material such as fly ash (FA) and rice husk ash (RHA) are reported. The utilization of waste byproduct are the interest in research for healing of concrete. The non-destructive testing and microstructure analysis were conducted to quantify autogenous healing in concrete. The concrete specimens prepared with different proportion of FA and RHA. The satisfactory results of non- destructive test were obtained with respect to the durability of concrete. In the chemical and microstructure analysis the calcium carbonate crystals formed on healed cracks surface and dense particle packing in the matrix of concrete were observed. This type of ternary blend is useful for making durable and sustainable concrete structure. The utilization of industrial and agricultural byproduct reduces the effect of environmental pollution and also reduces the consumption of cement with the same reduction in CO2 emition from cement industry.