Paper Title

NUMERICAL EVALUATION OF STRUCTURAL BEHAVIOR OF THE SIMPLY SUPPORTED FRP-RC BEAMS

Abstract

The main problem of steel-reinforced concrete structures is corrosion of steel reinforcements which leads to premature failure of the concrete structures. This problem costs a lot annually to rehabilitate and repair these structures. In order to improve the long-term performance of reinforced concrete structures and for preventing this corrosion problem,Fiber Reinforced Polymer (FRP) bars can be substituted of conventional steel bars for reinforcing concrete structures. This study is a numerical study to evaluate structural behavior of the simply supported concrete beams reinforced with FRP bars in comparison with steel-reinforced concrete beams
KEYWORDS : Fiber Reinforced Polymer, concrete beams, FRP bars

Paper Title

ANALYSIS OF SUPER INSULATED SHELL HOUSE MADE WITH FERRO ALLOY CEMENT

Abstract

The development and construction of lightweight pre-fabricated sandwich structural elements in building construction is a growing trend in construction industry all over the world due to its high strength-to-weight ratio, reduced weight, and good thermal insulation characteristics. Sandwich construction element consists of thin face sheets or encasement of high performance material and a thick, lightweight and low strength material as core. Ferro cement is regarded as highly versatile thin material possessing superior properties which cannot be matched by other conventional thin materials. Aerated concrete is a cellular lightweight material which exhibits relatively higher strength than the conventional core materials such as foam. Additionally, sandwich construction deals with the problem of delamination of face sheets leading to their premature failure. This can be avoided by providing encasement over the core. This study was focused on the development of Ferro cement encased aerated concrete sandwich wall elements, where Ferro cement thin box encases a thick core of lightweight aerated concrete. The study was conducted in two phases. First phase involved the development of high workability and high performance slag-cement based mortar mix to cast proposed Ferro cement encasement. The developed mortar was aimed to replace the traditional manual method of plastering the wire mesh by a mechanized casting method. The performance of mortar was investigated in terms of compressive strength, strength development, unit weight, effect of curing regime, and partial replacement of cement by weight with 50% and 60% of slag. The second phase of the study embarked on the development and investigation of the characteristics of Ferro cement encased lightweight aerated concrete sandwich wall elements. To achieve the objective, about 600 specimens including large size wall elements were cast and tested. Ferro cement encasement was maintained at 12mm throughout the study. The parameters studied were compressive strength, flexural strength, failure mode, load-deflection behavior, load-deformation behavior, load-strain behavior, unit weight, water absorption, initial surface absorption uniformity, and role of type and layers of the wire meshes. The results revealed the potential application of Ferro cement encasement of lightweight aerated concrete to produce lightweight structural elements which leads towards the industrialization of building system. Finally, two mathematical models were developed to predict compressive strength of high workability slag-cement based mortars and the Ultimate load of Ferro cement encased aerated concrete sandwich wall elements. The values predicted from the mathematical models were 95%-100% accurate to the experimental results
KEYWORDS : Lightweight, pre-fabricated, aerated concrete sandwich Ferro cement

Paper Title

A STUDY IN DETECTING THE DAMAGE CONDITIONS IN CONCRETE BRIDGES BY USING NON- LINEAR VIBRATION TECHNIQUES

Abstract

The aim of the work presented here was to investigate the chance of exploitation changes within the non-linear vibration characteristics to observe injury in concrete bridges These changes within the non-linear vibration characteristics were studied by conducting impact excitation vibration tests on concrete beams The non-linearity‟s were detected by examining the changes in first harmonic over time many time-frequency distribution estimation tools area unit mentioned together with linear vibrations against theoretical values and also the illustration of a non-linear mechanism exploitation the model was compared with experimental knowledge. Static load tests were conjointly conducted on the beams at varied damage levels. They concerned the employment of vibratory wire strain gauges to analyze the moment-rotation behavior over the cracked region many doable non-linear crack mechanisms are mentioned and 2 of them are assessed victimization the vibration and therefore the static load tests. Future experimental work is proposed to study the possible non-linear mechanisms further. The beam tests incontestable that there\'s a modification in non-linear vibration behavior with harm. The modification is greatest at low levels and once the beam has been loaded to half-hour of the failure load in three-point loading there\'s a reversal within the trend and a small reduction in non-linearity with any damage.
KEYWORDS : concrete bridges, Static load tests

Paper Title

STRENGTHENING OF REINFORCED CONCRETE BEAMS USING GLASS FIBER REINFORCED POLYMER COMPOSITES

Abstract

Concrete is a composite material which is powerless in pressure and is regularly influenced by breaking and scaling which are associated with plastic and solidified states and drying shrinkage. Worldwide a lot of research is right now being led concerning the utilization of fiber overlays and sheets in the repair and fortifying of fortified solid individuals. Fiber-fortified polymer (FRP) application is exceptionally successful approach to repair and fortify structures that have turned out to be basically powerless over their life expectancy. FRP repair systems give a financially suitable other option to customary repair structure and materials .In this paper Experimental investigations done on the behavior of the concrete strengthened using discontinuous blended chopped glass fibers (6mm and 12mm) are carried out with concrete mix different at various percentages (0.25%, 0.50%,0.75%) to the total weight of concrete. Experimental data on load for compression, tensile and flexural tests have been carried out, strength variations and failure modes of each specimen were obtained for age of 7,14 and 28 days.
KEYWORDS : Compressive Strength Split Tensile Strength, Flexural Strength, Glass Fiber Mix, Fiber Reinforced Polymer

Paper Title

CLOSED LOOP CONTROL OF ZVS/ZCS DC-DC CONVERTER WITH HIGH OUTPUT VOLTAGE FOR PHOTOVOLTAIC APPLICATION

Abstract

This project presents a non isolated, high boost ratio dc–dc converter with the application for photovoltaic (PV) modules. The proposed converter utilizes a hybrid transformer to incorporate the resonant operation mode into a traditional high boost ratio active-clamp coupled-inductor pulse-width-modulation dc– dc converter, achieving zero-voltage-switching (ZVS) turn-on of active switches and zero-current-switching turn-off of diodes. As a result of the inductive and capacitive energy being transferred simultaneously within the whole switching period, power device utilization (PDU) is improved and magnetic utilization (MU) is optimized. The improved PDU allows reduction of the silicon area required to realize the power devices of the converter. The optimized MU reduces the dc-bias of magnetizing current in the magnetic core, leading to smaller sized magnetics. Since the magnetizing current has low dc-bias, the ripple magnetizing current can be utilized to assist ZVS of main switch, while maintaining low rootmean- square (RMS) conduction loss. The voltage stresses on the active switches and diodes are maintained at a low level and are independent of the wide changing PV voltages as a result of the resonant capacitor in series in the energy transfer loop.
KEYWORDS : photovoltaic, dc– dc converter, diodes.

Paper Title

A SCHEMATIC STUDY AND ANALYSIS OF WAVE SPRING FOR MOTOR CYCLE SHOCK ABSORBER

Abstract

Suspension is the term given to the machine of springs, surprise absorbers and linkages that connects a car to its wheels and permits relative motion between the two. In this task we are able to increase a wave spring which can be replace The coil spring in present motors and check it the usage of Ansys workbench, dimensions and special variables are taken from previous papers and works, for layout purpose we are capable of use Catia v5r20. Springs are made from a spread of elastic substances, the most commonplace being spring steel. Small springs may be wound from pre-hardened stock, at the same time as large ones are made from annealed metal and hardened after fabrication. Some non-ferrous metals also are used along with phosphor bronze and titanium for parts requiring corrosion resistance and beryllium copper for springs wearing electrical cutting-edge. Materials for analysis taken as spring steel grade 38Si6 (EN- series4), ASTM 301 and A1095 as preferred by taking these alloy properties in to account.
KEYWORDS : wave spring, shock absorber, materials.

Paper Title

DESIGN AND ANALYSIS OF DIFFERENTIAL GEAR BOX WITH COATED OBJECTIVES TO CONTROL WEAR NATURE IN GEAR BOX

Abstract

A differential is a tool, normally but now not always employing gears, able to transmitting torque and rotation through 3 shafts. Differential is part of inner axle housing meeting, which includes the differential rear axles, wheels and bearings. The differential consists of a system of gears organized in this kind of manner that connects the propeller shaft with the rear axles. The primary aim of the project is to attention on the mechanical layout and contact analysis on assembly of gears in tools field after they transmit power at specific speeds at 2500 rpm, 5000 rpm and 6000 rpm. The analysis is conducted to verify the pleasant covered fabric for the gears in the gear container at better speeds by using analyzing pressure, displacement and also with the aid of considering weight loss. The mission also focuses on the light weight with coated gears feasibility to govern wear at one-of-a-type speeds. Design calculations are done on the differential of TATA ace by varying materials and speeds. CATIA V5 r19 version used to develop design and ANSYS work bench used for analysis.
KEYWORDS : gear box mechanism, wear, high rpm, coated materials, ANSYS

Paper Title

DESIGN AND ANALYSIS OF REGULAR AND VERTICAL GENETIC IRREGULAR BUILDING BY USING E-TABS

Abstract

To study building behavior of multi-story structures always depends on its strength, durability, stiffness and adequacy of the regular configuration of the structure. Methods: The analysis always depends on the forces and importance on the cost of analyzing the structure. Creating the 3D building model for both linear and non-linear dynamic method of analyses Understanding the seismic behavior of Setback buildings and Co-relating the seismic behavior of the Setback building with that of a building without Setback finally comparing the regular building behavior of building with a setback at top most 5 stories to that of the building with a setback at each floor level. Study the influence of vertical irregularity in the building when compare to regular building. Findings: The present study is limited to reinforced concrete framed structure designed for setback and regular building of loads (DL, LL & EL). The behavior of 20-Storied buildings with and without setbacks was studied. The buildings were analyzed using Time History Analysis and Response Spectrum Method and. Novelty: The effect of Setback is studied considering the parameters such as Time Period, storey drifts, Displacements, Storey Shears, Bending Moments and Shear Forces and correlated with the building without a setback.
KEYWORDS : 3D building, E-tabs, multi-story structures

Paper Title

A RESEARCH IN IMPLEMENTING THE REMOTE DATA INTEGRITY CHECKING IN PUBLIC CLOUD FOR IDENTITY-BASED PROXY-ORIENTED DATA UPLOADING

Abstract

More and more clients would like to store their data to public cloud servers (PCSs) along with the rapid development of cloud computing. New security problems have to be solved in order to help more clients process their data in public cloud. When the client is restricted to access PCS, he will delegate its proxy to process his data and upload them. On the other hand, remote data integrity checking is also an important security problem in public cloud storage. It makes the clients check whether their outsourced data are kept intact without downloading the whole data. From the security problems, we propose a novel proxy-oriented data uploading and remote data integrity checking model in identity-based public key cryptography: identity-based proxy-oriented data uploading and remote data integrity checking in public cloud (ID-PUIC). We give the formal definition, system model, and security model. Then, a concrete ID-PUIC protocol is designed using the bilinear pairings. The proposed ID-PUIC protocol is provably secure based on the hardness of computational Diffie–Hellman problem. Our ID-PUIC protocol is also efficient and flexible. Based on the original client’s authorization, the proposed ID-PUIC protocol can realize private remote data integrity checking, delegated remote data integrity checking, and public remote data integrity checking.
KEYWORDS : Cloud computing, identity-based cryptography, proxy public key cryptography, remote data integrity checking.

Paper Title

A COMPARATIVE STUDY IN VERIFIABLE OUTSOURCING OF KEY UPDATES FOR ENABLING CLOUD STORAGE AUDITING

Abstract

Key-exposure resistance has always been animportant issue for in-depth cyber defence in many security applications. Recently, how to deal with the key exposure problem in the settings of cloud storage auditing has been proposed and studied. To address the challenge, existing solutions all require the client to update his secret keys in every time period, which may inevitably bring in new local burdens to the client, especially those with limited computation resources, such as mobile phones. In this paper, we focus on how to make the key updates as transparent as possible for the client and propose a new paradigm called cloud storage auditing with verifiable outsourcing of key updates. In this paradigm, key updates can be safely outsourced to some authorized party, and thus the key-update burden on the client will be kept minimal. In particular, we leverage the third party auditor (TPA) in many existing public auditing designs, let it play the role of authorized party in our case, and make it in charge of both the storage auditing and the secure key updates for key-exposure resistance. In our design, TPA only needs to hold an encrypted version of the client’s secret key while doing all these burdensome tasks on behalf of the client. The client only needs to download the encrypted secret key from the TPA when uploading new files to cloud. Besides, our design also equips the client with capability to further verify the validity of the encrypted secret keys provided by the TPA. All these salient features are carefully designed to make the whole auditing procedure with key exposure resistance as transparent as possible for the client. We formalize the definition and the security model of this paradigm. The security proof and the performance simulation show that our detailed design instantiations are secure and efficient.
KEYWORDS : Cloud storage, outsourcing computing, cloudstorage auditing, key update, verifiability.

Paper Title

A COMPREHENSIVE STUDY IN WEB-BASED CLOUD COMPUTING SERVICES TO FINE-GRAINED TWO-FACTOR ACCESS CONTROL

Abstract

In this paper, we introduce a new fine-grained two-factor authentication (2FA) access control system for web-based cloud computing services. Specifically, in our proposed 2FA access control system, an attribute-based access control mechanism is implemented with the necessity of both a user secret key and a lightweight security device. As a user cannot access the system if they do not hold both, the mechanism can enhance the security of the system, especially in those scenarios where many users share the same computer for web-based cloud services. In addition, attribute-based control in the system also enables the cloud server to restrict the access to those users with the same set of attributes while preserving user privacy, i.e., the cloud server only knows that the user fulfills the required predicate, but has no idea on the exact identity of the user. Finally, we also carry out a simulation to demonstrate the practicability of our proposed 2FA system.
KEYWORDS : Fine-grained, two-factor, access control, Web services

Paper Title

A STUDY ON STRENGTH AND DURABILITY OF A CONCRETE WITH COURSE AGGREGATE REPLACED WITH RECYCLED CONCRETE AGGREGATE

Abstract

Today environmental studies discussing the recycling and reuse of waste materials are getting great importance. Concrete waste, fly ash, rice husk and other different types of waste material produce a large amount of waste. Natural disaster such as earth quakes produce large amount of waste concrete. Removing the waste materials away from the disaster site causes financial and environment problems. In order to prevent these problems waste material should be recycled and reused. According to a study commissioned by Technology Information Forecasting and Assessment Council (TIFAC) 70% of the construction industry is not aware of recycling techniques. Central Pollution Board has estimated current quantum of solid waste generation in India to the tune 48 million tons per annum out of which waste from construction industry accounts for more than 25%. The total quantum of waste from industry in India is estimated to be 12 to 14.7 million tons per annum out of which 7-8 million tons are concrete and brick waste ( Naguchi, 2012). In Present study the potential usage of waste concrete aggregate for making new concrete was researched. The properties of recycled aggregates were tested for use in concrete. New concrete were made with 10%, 20%, 30% and 40% coarse recycled aggregates replacing the natural aggregate. Various tests were performed on fresh and hardened and durable properties. The results indicate that the properties of the concretes made with natural aggregate and waste concrete aggregate up to 40% have only slight differences.
KEYWORDS : Concrete aggregate, TIFAC, recycled aggregates.

Paper Title

AN EXPERIMENTAL STUDY ON EFFECT OF BOND STRENGTH OF M30 GRADE CONCRETE BY USING MANUFACTURED SAND AND GLASS FIBER

Abstract

The major problem that the world is facing today is the environmental pollution. In the construction industry mainly the production of ordinary Portland cement (OPC) will cause the emission of pollutants which results in environmental pollution. The production of one ton of Portland cement emits approximately 850kg of CO2 into the atmosphere. An effort in this regard is the replacement of Portland cement with materials of biological origin or by-product materials such as Glass Fibers and manufactured sand in place of natural sand etc. Tests were carried out on 150mmX150mmX150mm cubes. In the present work, the strength characteristics and Bond were studied. To study the BOND STRENGTH of concrete by using pullout test method (IS 2770-part1), by 16mm diameter Mild and HYSD steel bars were used.
KEYWORDS : ordinary Portland cement, concrete, sand, glass fiber.

Paper Title

DURABILITY STUDY ON GEOPOLYMER CONCRETE BY PARTIAL REPLACEMENT OF FLY ASH WITH CEMENT AND FULL REPLACEMENT OF SAND BY CRUSHER DUST

Abstract

Due to high infrastructure growth all around the world, the demand for concrete is going high day by day. We all know that this concrete uses the cement as a binding material. It is also known that manufacturing of cement not only utilizes abundant natural resources & energy but also causes environment pollution to a greater extent by releasing substantial quantity of carbon dioxide into the atmosphere. Therefore, it is a high time to reduce the usage of cement and to find an alternative to the cement. At the same time large quantity of fly ash is being generated from large number of thermal plants and it is not being utilized effectively. So, one great idea to utilize the abundantly available fly ash and reduce the consumption of cement is„Geopolymer Concrete‟. In Geo polymer Concrete, fly ash, rich with aluminium and silicon is used as a source material. These aluminium & silicon present in fly ash are induced by alkaline liquids such as sodium or potassium hydroxide and sodium silicate to produce a binder paste. This paste binds fine and coarse aggregates within the concrete. Thus produced geo polymer concrete gives the desired strength as needed. However, geo polymer concrete requires high curing temperatures to get the desired strength. So, it is thought that partial replacement of fly ash with cement in geo polymer concrete would be helpful in overcoming the problem of this high curing temperature. Hence, in this investigation fly ash within the geo polymer concrete was partially replaced by cement at replacement levels of 10%, 30% and 50% to check for any improvements in the properties of geo polymer concrete. In this experimental work various properties of geo polymer concrete such as compressive strength, split tensile strength, sulphate attack resistance and acid attack resistance were evaluated. Further details of this investigation are described as given in following chapters.
KEYWORDS : geopolymer concrete, cement, fly ash.

Paper Title

DURABILITY STUDIES ON HIGH STRENGTH HYBRID FIBER REINFORCED SELF COMPACTING CONCRETE

Abstract

An Experimental study was conducted to investigate the behavior of High Strength Hybrid Fiber Reinforced Self Compacting Concrete (HSHFRSCC) using quartz sand and quartz powder. The Investigation is carried out to obtain the abrasion behavior, acid resistance and permeability of HSHFRSCC by using the partial pozzolanic admixture i.e. quartz powder in addition to use of hooked end steel fibers and glass fibers with complete replacement of river sand with quartz sand. Apart from achieving desired high strength it is also important for the structure to be more durable. Few of the methods which can help in determining the durability properties of concrete is the abrasion resistance, permeability and acid attack of concrete. The present Experimental investigation is carried out to determine the abrasion resistance, permeability and resistance to chemical attack of High Strength Hybrid Fibre Reinforced Self Compacting Concrete of M100 grade. The cylindrical specimen of 300mm diameter and 100mm height, cured for 28 days in water, was considered to determine the depth of wear using under water abrasion machine, which comprise seventy grade 1000 chrome steel grinding balls with nominal sizes, that are used to abrasive charges. Permeability of the specimen is determined using the permeability apparatus which meets the requirements of IS 3085-1965,in which specimen of size 100 mm diameter and 100 mm height are caste and cured fo1 28 days in water, then set into apparatus to determine the permeability. The cubes of size 150 mm X 150 mm are caste and cured for 28 days in water and then they are placed in the solutions of HCL and HzSO4with 5%and 10 % concentration to determine resistance to acid attack.
KEYWORDS : Concrete, hybrid fiber, Fiber Reinforced Self Compacting Concrete

Paper Title

FLEXURAL BEHAVIOUR OF REINFORCED CONCRETE BEAMS USING GLASS FIBER REINFORCED POLYMER COMPOSITES

Abstract

Fibre reinforced polymer material systems composed of fiber embedded in a polymeric matrix, exhibit several properties which create the opportunity for their use as structural reinforcing elements. They are characterized by excellent tensile strength in the direction of the fibers. FRP composites do not exhibit yielding, but instead are elastic up to failure. They are also characterized by relatively low modulus of elasticity in tension and low compressive properties. In this study, bidirectional glass reinforced polymer laminate are using for practical approach. After a curing time of 2-3 days, the rehabilitated specimens will be tested until failure. The cracking pattern, ultimate loads and deflected shape of the specimens to be notified The tests will be carried out on ten simply supported reinforced concrete beams with square cross section of 150* 150 and a span length of 1000 mm. The beams were strengthened with external U wraps bonded to tension side. The continuous GFRP reinforcement which give delay in de-bonding of bottom longitudinal GFRP laminates. The most investigating parameter in this experimental study is to determine increase in load carrying capacity of strengthened beam. To evaluate the strength of damaged RC beams with externally bonded GFRP laminates was the target of this project. Further the attaining inputs will analyze by using STAD-PRO for optimization.
KEYWORDS : Flexural Behaviour, Compressive Strength Split Tensile Strength, Glass Fiber Mix, STADD PRO software Stiffness and Strength