Dr S R R Teja Prathipati
@siddhartha.ac.in
Assistant Professor in Department of Civil Engineering
Velagapudi Ramakrishna Siddhartha Engineering College, Vijayawada
EDUCATION
Doctor of Philosophy in Civil Engineering at NIT WARANGAL
RESEARCH INTERESTS
Cement Composites, Construction Materials, Special Concretes
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Hanuma Kasagani, S. R. R. Teja Prathipati, Srikanth Koniki, and C. B. K. Rao
Wiley
AbstractThe stress–strain behavior of graded glass fiber reinforced concrete (GGFRC) is a crucial factor in its performance and appropriateness for diverse applications. In the present study, experimental and analytical methods were used to develop a model for the stress–strain behavior of GGFRC under uniaxial loading. The experimental program is designed to investigate the impact of mono glass fibers (3, 6, 12, and 20 mm) with varying volume fractions (0.1%–0.5%) and graded glass fibers (combinations of 3 + 6 + 12 + 20 mm) on the behavior of concrete of M50 grade. By grading glass fiber lengths in the concrete, GGFRC's pre‐peak strength and post‐peak deformation have increased, allowing the composite to control the various scales of cracking. A uniaxial compressive stress–strain model has been developed utilizing the fiber reinforcing index to predict the stress–strain curves of GGFRC in compression. The fiber reinforcing index, which is a measure of the quantity of fiber reinforcement in the material, is used as a variable in the current model to observe how it impacts the material's behavior. This would help evaluate the material's behavior under uniaxial compressive loading conditions and then use that data to develop a mathematical model that can predict the material's response under other conditions. Finally, it can be concluded that there is a significant correlation between the experimental results and the proposed analytical model.
S. R. R. Teja Prathipati, Yeswanth Paluri, Hanuma Kasagani, and Kunamineni Vijay
Springer Nature Singapore
Kunamineni Vijay, S R R Teja Prathipati, Tummala Santhi Sagar, and Yeswanth Paluri
IOP Publishing
Abstract The construction sector contributes significantly to environmental degradation by completely depleting energy resources. Cement industry emissions are the most significant contributors to climate change along with global warming. To address this issue, researchers are investigating different materials with cementing properties thereby replacing the cement in concrete either partially or completely. Various materials such as different types of ashes and slags have been effectively utilized as cement substitutes thereby making the concrete sustainable. Partial substitution of cement with fly ash has a positive impact on the overall performance of concrete but the incorporation of fly ash at a higher volume into the concrete reduces its characteristics. The objective of this work was to improve the overall performance of High-Volume Fly-Ash concrete by incorporating steel fibers with varying volume fractions. From this study, it can be inferred that reinforcing with steel fibers up to 1.2% fiber volume has compensated for the negative effect of HVFA by improving the overall properties.
S.R.R. Teja Prathipati, Yeswanth Paluri, Kunamineni Vijay, and V Bhavita Chowdary
IOP Publishing
Abstract Due to the increasing demand for the mechanical properties of construction materials, High Strength Concrete (HSC) has been increasingly popular in recent decades. The raw materials utilized in the production of it consume energy and negatively affect the environment. There is a pressing need to protect the environment and conserve natural resources which are being affected by both cement manufacturing and aggregate production. In this research work, the mechanical properties of HSC blended with industrial wastes were assessed to evaluate the feasibility of incorporating industrial wastes into high-strength concrete. An attempt has been made to partially replace cement and fine aggregate in the concrete with fly ash and quarry dust, respectively, at different percentages. The workability, compressive strength, and flexural strength of the concrete, along with durability properties such as water absorption, porosity, density, acid strength loss, and acid mass loss, were investigated and reported. From the results, it can be inferred that utilizing fly ash and quarry dust up to 30% each into the high strength concrete has proved beneficial in terms of mechanical performance. Therefore, it can be concluded that replacing cement and aggregate with industrial wastes such as fly ash and quarry dust up to 30% into the HSC can be a sustainable alternative to the conventional HSC.
Srikanth Koniki, Hanuma Kasagani, Sri Ram Ravi Teja Prathipati, and Yeswanth Paluri
Springer Science and Business Media LLC
Hanuma Kasagani, Sri Ram Ravi Teja Prathipati, and Chittem Butchi Kamiswara Rao
Thomas Telford Ltd.
In this investigation, four different lengths of glass fibres were blended together in a graded glass fibre form – that is, short graded glass fibre (SGGF: 3 + 6 mm), long graded glass fibre (LGGF: 12 + 20 mm) and combined graded glass fibre (CGGF: 3 + 6 + 12 + 20 mm) – and added to the concrete. The uniaxial tension and compression behaviour of M50 grade concrete with graded glass fibres at three different volume fractions – that is, 0·3, 0·4 and 0·5% – for five different fibre volume combinations were studied. It was observed that adding SGGF to the concrete results in higher peak strength and adding LGGF to the concrete resulted in higher post-peak deformation. The best performance was exhibited by the combination of SGGF and LGGF (CGGF) for the same volume fraction of fibres, and this was attributed to the grading of the different fibre lengths, which can control the different scales of cracking and thus contribute to the increase in pre-peak strength and post-peak deformations. Finally, from this study it was concluded that the strain softening behaviour in compression was influenced by the strain hardening behaviour in the tension of graded-glass-fibre-reinforced concrete.
S. R. R. Teja Prathipati and C. B. K. Rao
Springer Science and Business Media LLC
S. Prathipati, C. Rao and N. Murthy
International Digital Organization for Scientific Information (IDOSI)
Brittleness, which was the inherent weakness in High Strength Concrete (HSC), can be avoided by reinforcing the concrete with discontinuous fibers. Reinforcing HSC with more than one fiber is advantageous in an overall improvement of the mechanical performance of the composite. In this experimental study, Hybrid Fiber Reinforced High Strength Concrete (HyFR-HSC) mixes were formed by blending single length glass fiber and single length steel fiber with a total volume fraction of 1.65% into the concrete and Hybrid Graded Fiber Reinforced High Strength Concrete (HyGrFR-HSC) mixes were obtained by mixing different lengths of glass fiber with different length of steel fibers at a total volume fraction of 1.65% into the concrete. A comparative study was made between HyFR-HSC and HyGrFR-HSC specimens to investigate the effect of fiber grading on strength properties and the uniaxial compressive behaviour of HSC with hybrid fibers. In both HyFRC and HyGrFRC mixes, glass fibers improved the pre-peak behaviour, and steel fibers improved the post-peak behaviour of concrete, thereby exhibiting a positive synergy in combining glass and steel fiber into the concrete. Among the two-hybrid FRC’s, HyGrFRC outperformed HyFRC with substantial improvement in both strength and ductility. Among all the HyGrFRC mixes, HyGr9 mix, which contain a higher amount of long-length fibers exhibited better improvement in peak strain, ductility factor, total energy and toughness index. The replacement of single length of fibers with graded length fibers at higher volume fraction in HyFRC is useful in improving workability, thereby providing better fiber dispersion and thus enhances both the pre-peak and post-peak performance of the concrete. From this investigation, it can be inferred that grading of fibers improved the mechanical behaviour of HyFRC by exhibiting positive synergy from both fiber geometry and fiber type.
S.R.R.Teja Prathipati, Srikanth Koniki, C.B.K. Rao, and Hanuma Kasagani
Elsevier BV
S.R.R. Teja Prathipati, Inamullah Khan, C.B.K. Rao, and Hanuma Kasagani
Elsevier BV
S.R.R. Teja Prathipati and C.B.K. Rao
Elsevier BV