Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

&nbsp;

&nbsp;

VIT University

Civil

VIT Unitversity

School of Civil Engineering

Chennai Campus

Asian Journal of Civil Engineering

Numerical study on influence of masonry infill in an RC frame

The common binder which is used in the construction industries all over the world is Ordinary Portland Cement (OPC). OPC gives required strength and durability to the buildings. But during the process of cement manufacturing a large amount of Co 2 is emitted. Since it is the commonly used binder, the emission of Co 2 is significantly greater. To reduce the emission of Co 2 some of the developed countries are focusing on other types of binder which emits less Co 2 . In construction industry, river sand are mainly used as the fine aggregates, which has resulted in depletion of few rivers and also lead to saline water intrusion from the nearby seas. So the government has prohibited the sand mining to preserve the natural resource. This increased the demand and cost of sand. To overcome the above criteria the river sand is fully replaced with copper slag and the cement is fully replaced with flyash (90% &amp; 80%) and metakaolin (10% &amp; 20%). This paper gives an overlook of mechanical and durability properties of geopolymer concrete using Metakolin and Copper Slag along with activator solutions. © BEIESP.

World University root node

International Journal of Innovative Technology and Exploring Engineering

Mechanical and durability properties of geopolymer concrete using copper slag and metakaolin

Reclaimed Asphalt Pavement (RAP) is a widely used recycled material in pavement construction. Whereas the integration of RAP into asphalt mixtures is a complex subject and need to understand every aspect that entailed in the mix design. The aim of this review paper is to provide comprehensive knowledge about the developments and challenges of the RAP in the asphalt mixtures, along with the mechanisms involved. The blending process and rejuvenator are two key factors that govern RAP content, and this can even surge up to 100% in the asphalt mixtures. The blending between the RAP and the virgin materials is very crucial in the context of performance and durability of RAP mixtures. While rejuvenator is an additive which may act as a catalyst and enhance the aged RAP binder properties. A detailed description of distinct types of the rejuvenators and their performances are discussed in this paper. Several aspects of the RAP mixtures including mix design, constituent materials, performance, RAP with polymer modified asphalt binder, as well as environmental benefits are highlighted. This study gives information to the researchers, engineers, and designers about the RAP technology. © 2019, Higher Education Press Limited Company.

International Journal of Pavement Research and Technology

A review on the mechanisms involved in reclaimed asphalt pavement

Mechanical

School of Mechanical Engineering

International Journal of Environment and Waste Management

Behaviour of environment friendly green concrete beams using fly ash and furnace slag under cyclic loading

Cement is the superb wellspring of ecological impact in cement and mortar making. This is due to parcel of carbon dioxide (CO₂) emanation. This assignment manages supplanting of bond with GGBS and motion sand with copper slag and M-sand along nanoparticles like Titanium dioxide (TiO₂) has been incited to enhance the microstructure and increment the compressive first-rate of the mortar. The mechanical and durability research are finished at 7,28 and 56 days and are been contrasted and the not unusual mortar

International Journal of Recent Technology and Engineering Special Issue

Research on Mechanical and Durability Properties of GGBSand Copper Slag Mix Mortar

Conventional seismic design approach depends on inelastic deformation of structural members for seismic energy dissipation. This concept may provide safety and economy in seismic design, but may not prevent damage in structures after strong earthquake. Consequently, the gravity framing systems in such structures may be exposed to interstoreydrift demands several times greater than would be expected on the basis of design calculations, calling into question their perceived safety. In this study, an overview of the seismic performance of the structures with respect to different design parameters are discussed. It is concluded thatthe strength and the initial stiffness of the designed frames decrease as the allowed storey drift limit of the frame increases. The maximum storey drift and beam-strain responses of the frames under the earthquake loading increases with the increase in the allowable storey drift limits. © 2019 Elsevier Ltd. All rights reserved.

Materials Today: Proceedings

Seismic performance of different allowable storey drift limits: a review

The design of connections is one of the most important considerations in the structural design of precast concrete structures. The purpose of the connection is to transfer loads, restrain movement and provide stability. Within one joint there may be several load transfers, each one must be designed for adequate strength and ductility and appropriately detailed. The proposed investigation aims to achieve efficient horizontal connections in precast walls with improved structural performance under various loads. HYSD reinforcement dowels are used as connectors. The arrangement of dowels is varied to achieve the efficient load transfer in the walls. The experimental investigation on three precast wall and one monolithic wall depicts that the precast wall exhibits high strength than the monolithic wall specimen and structural performance were found to be better than the monolithic wall specimen and also the efficient load transfer is achieved in the precast wall

Department of Mathematics

School of Advanced Sciences

Vellore Campus

International Journal of Recent Technology and Engineering Regular Issue

Behaviour of Horizontal Connections in Precast Walls under Lateral Loading

The modern engineering has successfully involved in developing innovative, sustainable, green and recycled products in the manufacture of concrete. In India, the demand of natural sand is quite high due to the rapid infrastructural growth. The abundance availability of Fly ash and bottom ash that needed to be disposed of in a friendly way. Bottom ash has potential to be used as concrete material in place of fine aggregate. This paper elaborates the effect of bottom ash as fine aggregate in Geopolymer concrete. Bottom ash used as fine aggregate replaced partially in geopolymer concrete. GGBFS is used as Cement replacement in geopolymer concrete. NaOH and Na2SiO3 activator are used as binder in geopolymer concrete. The test involved designation of 20%, 40 % & 60% of bottom ash (BA) as a partial replacement of fine aggregate to study the engineering properties (compression test, split tensile strength) and the functional properties (test on sulphate resistance, salt water resistance, test on acid resistance, RCPT, sorptivity also quality assessment test (UPV test) and the test results indicate that there is decrease in compressive stress with increase of bottom ash, it is observed that 20%to 40% replacement of bottom ash has good strength and durability © BEIESP.

Influence of bottom ash as fine aggregate in ggbfs geopolymer concrete

Geopolymer concrete has recently emerged as a new eco-friendly green concrete with the potential to replace Portland cement and also utilizes copiously available waste by products that are disposed. Geopolymer concrete is a long chain inorganic molecule, formed by reacting aluminate and silicate minerals with an alkaline activator solution. The geopolymer concrete mix is prepared by using activator solution which depends on molarity of sodium hydroxide concentration. In this research, 10M sodium hydroxide solution along with sodium silicate is employed. The higher demand and scarcity of river sand, due to which various acts and legislation opposing illegal dredging and trading of river sand are framed. The ultimate objective of this research is assessing the strength properties (compressive strength, split tensile strength, and flexural strength) and durability properties (acid attack, sulphate attack, and chloride attack) of geopolymer concrete, with the view on replacing cement and river sand with economic alternative materials. The cement is entirely replaced with fly ash (80%), GGBS (20%) and river sand is partially replaced with foundry sand to produce green concrete. © BEIESP.

Strength and durability properties of geopolymer concrete using foundry sand as a partial replacement

This paper represents the study of mechanical properties of concrete by utilizing the waste foundry sand (WFS) as a replacement material in the production of concrete. Waste foundry sand is obtained from the industries where aluminum is cast, which is a sand used for the purpose of casting the moulds. WFS are used in different ratios such as 20%, 25% and 30% and also several investigations were carried out to determine the compressive strength, elastic modulus and Poisson’s ratio with the help of the Bazant–Baweja (B3 model) using multiscale modeling at each level, American Concrete Institute (ACI model) and Indian Standards (IS method) to know the behavior of concrete. The proposed method does not require any prior information with respect to the mechanical properties of bond, for instance, modulus of elasticity or compressive strength. The test results related to the proposed model for elastic modulus at the level of concrete bearing a value of 36.92 kN/mm2 and 37.78 kN/mm2 for the water-to-cement ratio (w/c) 0.4 and 0.5, respectively. The test results produced that the strength of concrete up to 30% was relatively close when compared with control mixture (CM) for w/c-0.4, with an average increase of about 1.9%. Similarly, 20% of WFS usage had a variation of 6.1% when compared with the CM for w/c-0.5. The further strength reduction in WFS is recognized due to the fineness of WFS and also with the presence of dusty particles. From the results obtained, it is concluded that WFS can be replaced with 30% and 20% for 0.4 and 0.5 w/c, respectively, with an effective manner in the production of concrete. © 2018, Springer Nature Switzerland AG.