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Papers by Dr. Sagar Sarangi
Indian journal of science and technology, Aug 17, 2016
Objectives: To evaluate the suitability of short coconut and PP fiber as a reinforcing agent in c... more Objectives: To evaluate the suitability of short coconut and PP fiber as a reinforcing agent in cement concrete. Mixing and casting of untreated coconut and PP fiber in RCC check the mechanical properties of HFRC. The experimental background is cited in the literature. Methods/Statistical Analysis: From the basic tested data a mix design for M20 grade concrete at a weight of cement fraction is 1%.For this work 12nos of cube (150 mm * 150 mm * 150 mm) and 12nos of beam (700mm *150 mm*150 mm) were casted by using different fiber proportion of polypropylene fiber & coconut fiber in the laboratory; along with one set of control sample were examined and compared with the HFRC. Findings: All the cube specimens were tested by UTM and beam specimens were tested in UTM by using two points loading as per IS 516-1959. The test result shows that the weight fraction of 1% with Polypropylene 0.75-coconut coir 0.25 combination specimens improves compressive strength and flexural strength as compared with control specimen. Applications/Improvements: The use of hybrid fiber reinforced concrete in non-structural components like Walls & Surfaces of Septic Tank, Water Storage Tanks and Dams, Sports Grounds, Industrial, Residential Floors & Warehouses etc. The major contribution of fibers in crack resistance and crack control, improve ductility of concrete.
In order to migrate over large distances, cells within tissues and organisms rely on sensing 2 lo... more In order to migrate over large distances, cells within tissues and organisms rely on sensing 2 local gradient cues. These cues however are multifarious, irregular or conflicting, changing 3 both in time and space. Here we find that single cells utilize a molecular mechanism akin to 4 a working memory, to generate persistent directional migration when signals are disrupted by 5 temporally memorizing their position, while still remaining adaptive to spatial and temporal 6 changes of the signal source. Using dynamical systems theory, we derive that these information 7 processing capabilities are inherent for protein networks whose dynamics is maintained away 8 from steady state through organization at criticality. We demonstrate experimentally using the 9 Epidermal growth factor receptor (EGFR) signaling network, that the memory is maintained 10 in the prolonged receptor's activity via a slow-escaping remnant, a dynamical "ghost" of the 11 1 .
Cement and Concrete Research, 2003
Concretes containing different types of hybrid fibers at the same volume fraction (0.5%) were com... more Concretes containing different types of hybrid fibers at the same volume fraction (0.5%) were compared in terms of compressive, splitting tensile, and flexural properties. Three types of hybrid composites were constructed using fiber combinations of polypropylene (PP) and carbon, carbon and steel, and steel and PP fibers. Test results showed that the fibers, when used in a hybrid form, could
Journal of Natural Fibers, May 4, 2022
Fibre-reinforced cement mortar is a composite material used to introduce short fibre for enhancin... more Fibre-reinforced cement mortar is a composite material used to introduce short fibre for enhancing some properties of the mortar matrix. Mortar cubes of 1% hybridization by using poly-propylene (PP), coconut coir (CC) and scrap rubber (TR) fibre were prepared and various properties were compared with a control mix specimen after 28 days. Compressive strength test was conducted for determining the changes in physical properties of the mortar due to the effect of salinity and urination. Study on interfacial bonding between matrix and reinforcement carried out by using SEM analysis. The test result suggested that fibre-reinforced plaster was able to achieve adequate strength if curing water contains salinity of 3.5% (35 g/L) and crop nutrient (NPK-46-0-0) of 40% w/v dissolved form in freshwater. This type of concrete could be used in non-structural components like warehouse flooring, industrial floor, water tank, benches or footpath near sea beaches, etc.
Journal of industrial pollution control, 2017
This paper research and experimental investigation carried out on hybrid fiber reinforced concret... more This paper research and experimental investigation carried out on hybrid fiber reinforced concrete (combination of hooked end steel fiber and polyolefin) with a volume fraction of 0.5%, 1% and 1.5% which was prepared using normal mixing, compaction and curing conditions. Here the cylindrical specimen with a diameter of 150 mm and height of 300 mm was casted. The experiment shows the modulus elasticity of samples increase with the amount of steel fibers in the concrete mix. Steel fiber and polyolefin fiber are used as Hybrid fibers. Tested were conducted to study the effect of steel fiber and polyolefin fiber in different proportions in hardened concrete. The research was also aimed to evaluate the potential of bottom ash as a fine aggregate in concrete. Fiber addition was seen to enhance an increase in compressive strength and ductility, respectively. The fine aggregate is replaced by 10% of bottom ash. Compressive strength of concrete is checked by compressive testing machine and c...
Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Sinc... more Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compatibility testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete.
Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Sinc... more Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compatibility testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete.
Journal of Natural Fibers
Indian journal of science and technology, Aug 17, 2016
Objectives: To evaluate the suitability of short coconut and PP fiber as a reinforcing agent in c... more Objectives: To evaluate the suitability of short coconut and PP fiber as a reinforcing agent in cement concrete. Mixing and casting of untreated coconut and PP fiber in RCC check the mechanical properties of HFRC. The experimental background is cited in the literature. Methods/Statistical Analysis: From the basic tested data a mix design for M20 grade concrete at a weight of cement fraction is 1%.For this work 12nos of cube (150 mm * 150 mm * 150 mm) and 12nos of beam (700mm *150 mm*150 mm) were casted by using different fiber proportion of polypropylene fiber & coconut fiber in the laboratory; along with one set of control sample were examined and compared with the HFRC. Findings: All the cube specimens were tested by UTM and beam specimens were tested in UTM by using two points loading as per IS 516-1959. The test result shows that the weight fraction of 1% with Polypropylene 0.75-coconut coir 0.25 combination specimens improves compressive strength and flexural strength as compared with control specimen. Applications/Improvements: The use of hybrid fiber reinforced concrete in non-structural components like Walls & Surfaces of Septic Tank, Water Storage Tanks and Dams, Sports Grounds, Industrial, Residential Floors & Warehouses etc. The major contribution of fibers in crack resistance and crack control, improve ductility of concrete.
In order to migrate over large distances, cells within tissues and organisms rely on sensing 2 lo... more In order to migrate over large distances, cells within tissues and organisms rely on sensing 2 local gradient cues. These cues however are multifarious, irregular or conflicting, changing 3 both in time and space. Here we find that single cells utilize a molecular mechanism akin to 4 a working memory, to generate persistent directional migration when signals are disrupted by 5 temporally memorizing their position, while still remaining adaptive to spatial and temporal 6 changes of the signal source. Using dynamical systems theory, we derive that these information 7 processing capabilities are inherent for protein networks whose dynamics is maintained away 8 from steady state through organization at criticality. We demonstrate experimentally using the 9 Epidermal growth factor receptor (EGFR) signaling network, that the memory is maintained 10 in the prolonged receptor's activity via a slow-escaping remnant, a dynamical "ghost" of the 11 1 .
Cement and Concrete Research, 2003
Concretes containing different types of hybrid fibers at the same volume fraction (0.5%) were com... more Concretes containing different types of hybrid fibers at the same volume fraction (0.5%) were compared in terms of compressive, splitting tensile, and flexural properties. Three types of hybrid composites were constructed using fiber combinations of polypropylene (PP) and carbon, carbon and steel, and steel and PP fibers. Test results showed that the fibers, when used in a hybrid form, could
Journal of Natural Fibers, May 4, 2022
Fibre-reinforced cement mortar is a composite material used to introduce short fibre for enhancin... more Fibre-reinforced cement mortar is a composite material used to introduce short fibre for enhancing some properties of the mortar matrix. Mortar cubes of 1% hybridization by using poly-propylene (PP), coconut coir (CC) and scrap rubber (TR) fibre were prepared and various properties were compared with a control mix specimen after 28 days. Compressive strength test was conducted for determining the changes in physical properties of the mortar due to the effect of salinity and urination. Study on interfacial bonding between matrix and reinforcement carried out by using SEM analysis. The test result suggested that fibre-reinforced plaster was able to achieve adequate strength if curing water contains salinity of 3.5% (35 g/L) and crop nutrient (NPK-46-0-0) of 40% w/v dissolved form in freshwater. This type of concrete could be used in non-structural components like warehouse flooring, industrial floor, water tank, benches or footpath near sea beaches, etc.
Journal of industrial pollution control, 2017
This paper research and experimental investigation carried out on hybrid fiber reinforced concret... more This paper research and experimental investigation carried out on hybrid fiber reinforced concrete (combination of hooked end steel fiber and polyolefin) with a volume fraction of 0.5%, 1% and 1.5% which was prepared using normal mixing, compaction and curing conditions. Here the cylindrical specimen with a diameter of 150 mm and height of 300 mm was casted. The experiment shows the modulus elasticity of samples increase with the amount of steel fibers in the concrete mix. Steel fiber and polyolefin fiber are used as Hybrid fibers. Tested were conducted to study the effect of steel fiber and polyolefin fiber in different proportions in hardened concrete. The research was also aimed to evaluate the potential of bottom ash as a fine aggregate in concrete. Fiber addition was seen to enhance an increase in compressive strength and ductility, respectively. The fine aggregate is replaced by 10% of bottom ash. Compressive strength of concrete is checked by compressive testing machine and c...
Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Sinc... more Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compatibility testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete.
Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Sinc... more Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compatibility testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete.
Journal of Natural Fibers