Ganesh Naidu Gopu
@pace.ac.in
Associate professor & HOD , Department of Civil Engineering
PACE INSTITUTE OF TECHNOLOGY & SCIENCES
RESEARCH, TEACHING, or OTHER INTERESTS
Civil and Structural Engineering, Building and Construction, Geotechnical Engineering and Engineering Geology, Waste Management and Disposal
Scopus Publications
Scopus Publications
D. Haripriya and G. Ganesh Naidu
Elsevier BV
K. Balachandra and G. Ganesh Naidu
Elsevier BV
Ganesh Naidu Gopu and A. Sofi
Elsevier BV
Ganesh Naidu Gopu and Sofi Androse Joseph
MDPI AG
Corrosion study of conventional reinforcement in concrete has been accorded wider importance in the last few decades based on the losses occurring in monitoring concrete structures. It is well known that the presence of chloride ions is one of the most significant factors contributing to the corrosion of reinforcing steel. Practically, it is observed that in the marine environment, the activating substances such as chlorides that penetrate the steel can counteract the passivity locally when the electrolyte is highly alkaline. The concrete cover is changed chemically when chloride ionspenetrate into the material, whereupon the pore solution is neutralized. Based on numerous studies, it is evident that steel fibers and glass fibers have less impact on cracked sections in a chloride environment and can oppose chloride infiltration. Glass fibers, when exposed to repeated freeze and thaw conditions, protect the passive layer. This review article highlights the corrosion behavior of reinforced concrete involving various factors such as cracking behavior, transportation, electric conductivity, resistivity, and diffusion of chloride ions in the presence of steel and glass fibers.
Ganesh Naidu Gopu, A. Sofi, Ch. Brahmareddy, and G. Sairaman
Elsevier BV
Ganesh Naidu Gopu, Rakesh Reddy Thummala, M. Sri Durga Vara Prasad, and Siva Koti Thottempudi
Elsevier BV
Ganesh Naidu Gopu, Sri Durga Vara Prasad M, Swaroop Babu Mylavarpu, and S Ankarao
IOP Publishing
Abstract Most superior cements delivered today contain materials notwithstanding Portland cement to help accomplish the compressive strength or solidness execution. These materials include fly ash, silica fume and ground-granulated blast furnace slag used discretely or in coalescence. Concurrently, chemical admixtures such as high-range di-hydrogen monoxide-reducers are needed to ascertain that the concrete is facile to convey, place and culminate. For high-strength cements, a blend of mineral and compound admixtures is almost consistently fundamental to guarantee accomplishment of the necessary strength. The Primer investigations have been done on concrete, Fine aggregate and coarse aggregate. The Blend Extent for M200 grade concrete is determined 1: 0.313: 1.463 by following the plan methodology given by ACI Strategy. By keeping up the w/c proportion as 0.25, the multi day Compressive strength, Flexural strength and Split elasticity of cement at 3% of silica fume and 1.5% of conplast have been accomplished as 163.33 N/mm2, 8.4 N/mm2& 9.5 N/mm2 separately. The variety of solidarity of cement with the variety of silica fume is appeared in bar outline. The strength of the concrete might be as yet expanded by decreasing the w/c proportion and expanding the level of silica fume
Ganesh Naidu Gopu, M Sri Durga Vara Prasad, Sugandham Kaumanu, and P Ravi Kumar
IOP Publishing
Abstract Solid waste disposition has been a growing problem in many developed and under-developing nations. Major part of development was constituted by construction and infrastructure; on the contrary these industries also lead to release of carbon dioxide into the atmosphere. To overcome these disadvantages; in this research, recycled aggregates from construction waste and granite cutting waste were adopted as a replacement of coarse aggregate and cement respectively. Mechanical properties of recycled aggregate (RA) concrete are tested by replacing coarse aggregate varying from 0% to 100% with a difference of 25% and cement is replaced with Granite cutting waste (GCW) varying from 0% to 20% with a difference of 5%. Mix designation and fresh properties were also presented. Results were plotted and compared with the normal concrete to predict the most optimal values of the replacement. Mix containing 25% of RA and 15% of GCW replaced has shown a notable difference in strength comparing with the normal aggregate concrete.
Ganesh Naidu Gopu and A. Sofi
Horizon Research Publishing Co., Ltd.
Major aspects that were considered while designing a structure are safety and serviceability. Serviceability is also called as life span of structure reduces, when exposed to severe environments. Solid waste management in developing nations has been growing everyday, which influenced the scientists and researchers around the world in recycling and application of solid waste in various fields. Introduction of waste and recycled fibers in concrete is quite prominent from last few decades. In this research, electric waster copper fibers (EWCF) are added to concrete to test mechanical properties and chloride ion penetration that could reduce the durability of concrete. Adopted percentages of copper fibers added to the concrete are 0, 0.25, 0.5, 0.75, 1.00, 1.25, 1.50, 1.75 and 2.00 for volume of concrete. Concrete introduced with EWCF was tested for compression, tensile, flexural and elastic modulus to determine mechanical behavior. Most optimal EWCF percentage of replacement that increased the strength of concrete is 1.0% in volume of concrete. Water absorption, sorptivity, acid attack, bulk diffusion and rapid chloride penetration test (RCPT) were performed on concrete with EWCF to evaluate the durability and microstructure performance. E-Glass and Steel fibers were also adopted in the study to compare the mechanical properties and durability. Optimum values for both strength and durability were determined from the experimental test results.
Ganesh Naidu Gopu and A. Sofi
Springer Singapore
Ganesh Naidu Gopu and A. Sofi
Springer International Publishing
G.Ganesh Naidu*, , M.Sri Durga Vara Prasad, E. Mani, , and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Usage of smart materials in concrete is extensively increasing. This study focuses on behavior of fiber reinforced concrete, using shape memory alloys (SMA) fibers. SMA adopted for this study is NiTi shape memory alloy crystals. Concrete is tested for slump and mechanical properties tested are compressive strength for 7 and 28 days. Flexural strength is tested for 28 days. Constant rates of 1% of SMA fibers are added to the concrete mix. Also regular steel fiber reinforced is prepared and test values are compared with SMA fiber reinforced concrete.
G.Ganesh Naidu, , M.Sri Durga Vara Prasad, K.Anil Kumar, , and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
This research paper gives the behaviour of reinforced concrete continuous beams under static loading by externally bonding with GFRP sheets. A standard two span continuous beams of size (300×300×2500)mm were casted. Reference beam with no external bonding is prepared to compare the values. Identical reinforcement arrangement is done for all beams. RC beams are tested for failure, load capacity and deflection analysis. Test results are compared for reference and GFRP bonded beams.
G,Ganesh Naidu*, , M.Sri Durga Vara Prasad, N.Venkata Kishore, R.Hari Prasad, , , and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Recycling of plastic is one of the major issues in the today’s world .In this paper, study is carried on properties on concrete using poly ethylene terephthalate waste fibers (PET). PET fibers are replaced with fine aggregate by 10,15,20,25 and 30%. Concrete is tested for fresh and hardened properties. Slump test is conducted to find out the workability of concrete. To check the mechanical properties of concrete compressive strength, flexural strength tests are conducted on concrete specimens.
G.Ganesh Naidu, , M.Sri Durga Vara Prasad, A.Venkata Sai Pavani, , and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Basalt fibers are extensively used construction materials due to its advantages. This paper emphasizes the behavior of basalt fiber reinforced concrete (BFRC) subjected to chloride attack. Basalt fibers are added in proportions of 0.5%, 1.0%, 1.5%, 2%, and 2.5%. Grade of concrete is M40. Cubes were casted for a standard size of 150*150*150mm and cured for a period of 28 days. Chloride attack is calculated by dipping the cubes in 5% of sodium chloride solution for a span of 28, 60 and 90 days. To estimate the chloride attack impact on BFRC, BFRC is tested for compressive strength, Acid attack and Rapid chloride penetration test.
G.Ganesh Naidu*, , M.Sri Durga Vara Prasad, U.Upendra Varma, S. Sandhya, , , and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
This paper concentrates on preparing concrete in which reverse osmosis waste water is incorporated in mixing and to cure. Experimental procedure consists of 4 mix proportions of various water cement ratios. Fresh concrete is tested for workability and flowing ability. Cubes were casted and tested to find out compressive strength of concrete. Test results of potable water concrete and RO waste water concrete were compared. Results show that workability of both the concretes is almost same. When coming to the compressive strength, RO waste water concrete shows less strength at 28days compared to normal concrete.
A Sofi and Ganesh Naidu Gopu
IOP Publishing
Fibre-reinforced concrete (FRC) contains fibrous material which increases its structural integrity. The application of irregular arrangement of fibres to concrete altogether upgrades its essential characteristics, for instance, static flexural strength, influence quality, elasticity and flexural stiffness. Filaments are added to cement to control breaking because of plastic shrinkage and to drying shrinkage. This paper exhibits the use of steel fibre, electrical waste copper wire fibre and electrical waste glass fibre of various percentages of volume fractions such as 0.25%, 0.5%, 0.75%, 1.0% and 1.25% incorporated in concrete. Mechanical properties such as compressive strength, splitting tensile strength and flexural strength tests were conducted for normal concrete and fibre reinforced concrete for a curing period of 7 days, 14 days and 28 days. In addition to that modulus of elasticity of concrete for various percentages of fibre content was investigated for a curing period of 28 days. The test results of fibre reinforced concrete were compared with normal concrete to determine the influence of fibres used.
Suresh Chand, S Vineetha, D Madhusudhan, CH Sai Krishna, G Kusuma Devi, Bhawani, K Hemarao, and G Ganesh Naidu
IOP Publishing
The plate of 7.0 mm thickness was double side welded using friction stir welding is investigated. The rotational velocity of friction stir welding tool is used 1400 rpm. The influence of welding speed on the microstructure and microhardness values of Al-0.84Mg-0.69Si-0.76Fe aluminum alloy is presented. Two welding speeds 25 mm/min and 31.5 mm/min are used. The microhardness values of friction stir weld are measured at various locations from the weld interface. The microhardness values in stir zone of weld are found larger than lower welding speed at constant rotational velocity of 1400 rpm of friction stir welding tool. The similar effects on microhardness values are found in the thermo-mechanically affected zone and heat affected zone. The fine microstructure is observed at 31.5 mm/min welding speed compared to the 25 mm/min welding speed at 1400 rpm.