Kunchapusuresh’s scientific contributions

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Publications (1)

Figure 4.1 Residual cube compressive strength of GP and OPC concrete after exposure to elevated temperature.
Figure 4.2 Residual cube compressive strength of GP and OPC concrete after exposure to elevated temperature.
Figure 4.3: Flexural strength of GP and OPC concrete after exposure to elevated temperatures From Table 4.3, it could be seen that compared and OPC concrete, there is a higher strength loss for GP concrete amid the beginning periods of temperature rise, despite the fact that both have nearly the equivalent flexural strength. In the present study, at 200°C, while air cooled and water cooled OPC concrete had a strength loss of about 7% and 15% respectively, the tensile loss of strength of GP concrete is around 19 % and 25% separately. On account of OPC concrete, despite the fact that the free water in concrete gets removed, the strength increased because of the hydration of unreached cement particles because of the heating compensates the strength loss because of different parameters in concrete when temperature is increased up to around 200°C; a conduct very much acknowledged by numerous analysts
A study on behavior of fly ash based geopolymer concrete at different elevated temperatures
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July 2021

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Kunchapusuresh

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mechanical properties of geopolymer concrete and OPC concrete after exposure to elevated temperature (280c to 6000c) were studied and compared to each other. In the present study, at 400°C temperature, the decreases of compressive strength of OPC concrete while air-cooled is 4% and 19% for water-cooled. For the geopolymer concrete is around 26% and 31%. Compare with air-cooled OPC specimen, despite the fact that there is a higher rate of strength decrease for GP concrete up to a temperature exposure of 200°C. After200°C, the strength loss decreases in geopolymer concrete when compared to OPC concrete up to 400°C.The strength loss is more at 400°C for OPC concrete, but in geopolymer concrete, the strength loss is less at 400°C, at 400°C the residual strength is nearly equivalent for both OPC concrete and geopolymer concrete. It might additionally be noticed that, while the rate of strength loss is nearly the equivalent for both the kinds of concrete between 400 °C and 600 °C. The geopolymer concrete when compared with OPC concrete there is a higher strength loss for geopolymer concrete at an early stage of temperature raise (200°C) in this research.At a temperature exposure above 400 °C, the un-reacted crystalline materials in geopolymer concrete get changed into shapeless state and experience polymerization. Accordingly, there is no further strength loss (compressive strength, tensile strength, flexural strength) in geopolymer concrete, OPC concrete keeps on losing its strength properties at a quicker rate past a temperature presentation of 600°C.

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