Veena Jawali - Academia.edu (original) (raw)

Papers by Veena Jawali

international journal of engineering trends and technology, 2014

Self Compacting Concrete (SCC) is one of the most significant advances in concrete technology in ... more Self Compacting Concrete (SCC) is one of the most significant advances in concrete technology in the last decades. SCC was mainly developed to ensure adequate compaction through self compaction and facilitate placement of concrete in structures with congested reinforcement and in restricted areas. SCC is a very fluid concrete and a homogenous mixture that solves most of the problems related to ordinary concrete. SCC gets compacted under its own weight and there is no need for an internal vibration for the body of the mould. An experimental investigation is carried out to study the properties of SCC, by partially replacing cement with certain percentage of Fly ash and Silica fume. Further, Workability, Mechanical & Durability properties are studied on these SCC mix proportions. This paper presents the behaviour assessment of these SCC, and this shows promise as a greener substitute for Ordinary Portland Cement in some applications. Index Terms Self Compacting Concrete, Fly ash, Silic...

World Environmental and Water Resources Congress 2010, 2010

Improving Ground Water Recharge Using Pervious Cement Concrete Made of Aggregates Recycled from C... more Improving Ground Water Recharge Using Pervious Cement Concrete Made of Aggregates Recycled from Crushed Concrete Wastes. [ASCE Conference Proceedings 371, 301 (2010)]. Prakash Parasivamurthy, Veena Jawali, BV Kirankumar, Mallikarjun B. Patil. Abstract. ...

Advanced Materials Research, 2011

Concrete is the key material used in construction of various types, from flooring of a dwelling t... more Concrete is the key material used in construction of various types, from flooring of a dwelling to multi-storied high rise structures, from pathways to an airport runways, from under ground tunnels and deep sea platforms to high-rise chimneys and towers. The greatest challenge in this millennium, especially in developing country like India, it needs to build concrete structures in quicker time, so as to meet high infrastructural demand. In order to achieve this, concrete construction practices will have to undergo a sea-change in the country. The study was focused on development of self-compacting concrete using high volume fly ash, admixed with quary dust and Silica fume. The objective of the study included evaluation of properties, viz. compressive strength, weight change observations in sulphate environment and resistance to chloride ion penetration. Several trial mixes were tested before optimizing the three Self-Compacting Concrete mixes based on binary and ternary blends. The ...

The natural convection that is caused by the joined effect of temperature buoyancy and concentrat... more The natural convection that is caused by the joined effect of temperature buoyancy and concentration buoyancy is analytically studied in an inclined rectangular cavity with uniform heat flow and mass flow along the vertical sides bounded by the porous lining. And the BJ condition is employed on the porous fluid interface. The analytical part is exact to the boundary layer regime where heat transfer and mass transfer rates are directed by convection. A linearized Oseen solution is for a tall rectangular cavity filled with the combination characterized by the Lewis number Le which is equal to one and arbitrary buoyancy ratios. The effect of Le is recorded by a valid similarity solution for Le over one in the heat transfer-driven flow, and for Le less than one in the mass-transfer-driven flow. The solutions are estimated for different values of the slip parameter N and the angle of inclination . The results are equated with those of the limiting cases of the slip parameter which tends ...

World Academy of Science, Engineering and Technology, International Journal of Civil and Environmental Engineering, 2017

In this present work an attempt is made to investigate the fresh, hardened and stress-strain beha... more In this present work an attempt is made to investigate the fresh, hardened and stress-strain behaviour of SCC blended with GGBS and silica fume. Compression test is conducted by testing 150x150x150 mm cubes for each mix and stress-strain behaviour of SCC is determined by conducting test on cylinders of 150x300mm dimension. An attempt is made to find the ductility factor for different combination of GGBS and Silica fume using Saenz Model. Normalised stress v/s normalised strain graph is shown in this paper.

International Journal of Mathematics Trends and Technology

IOP Conference Series: Materials Science and Engineering

Materials Science Forum, 2016

Optimally placing the sensors without compromising the performance is a challenge and its applica... more Optimally placing the sensors without compromising the performance is a challenge and its application is found in Structural Health Monitoring, Load Monitoring, Vibration Control and other areas. Every sensor has predefined region within which the source of disturbance is detected if it is present. This paper examines the use of fminimax concept on simple discretized plate using Genetic Algorithm to optimally place the sensors. This has been achieved by introducing maximum non detection probability in the objective function and the fitness of objective is minimized through genetic algorithm solver in MATLAB. The effectiveness of the present algorithm is then checked by comparing the solution with the solution obtained by implementing this concept on a continuous unit square plate using fminimax solver in MATLAB. The solution obtained in both the methods matched to that in the literatures. The study shows that the algorithm developed can be effectively adopted in discredited structur...

Materials Science Forum, 2014

Aim of a structural health monitoring system must be to collect sufficient information about the ... more Aim of a structural health monitoring system must be to collect sufficient information about the damage for appropriate remedial measures to be taken to ensure safety. The preliminary step in the process of damage assessment is locating the damage .One of the challenges faced by the structural health monitoring system is monitoring in-flight damages. Localization of in-flight damages or sudden impacts can be achieved by monitoring the acoustic emissions in real time mode. In this paper, an approach based on the employment of Piezo-electric transducer rosettes to locate the acoustic emission source in an aluminum plate is presented. Using the strain gage rosette concepts adapted for piezoelectric transducers, the wave strain principal angles are determined. When two rosettes are used, the intersection of the principal wave strain directions detected by the rosettes gives the wave source location. The method does not require the knowledge of wave velocity in the medium in contrast to ...