Paper Title

A STUDY ON PROPERTIES OF LIGHT WEIGHT CINDER AGGREGATE CONCRETE WITH SILICA FUME AND FLYASH AS ADMIXTURE

Abstract

In Design of concrete structures, light weight concrete plays a prominent role in reducing the density and to increase the thermal insulation. These may relate of both structural integrity & serviceability. More environmental and economic benefits can be achieved if waste materials can be used to replace the fine light weight aggregate. The new sources of Structural aggregate which is produced from environmental waste is Natural aggregates, synthetic light weight aggregate The use of structural grade light weight concrete reduces the self-weight and helps to construct larger precast units. In this study, an attempt has been made to study the Mechanical Properties of a structural grade light weight concrete M30 using the light weight aggregate pumice stone as a partial replacement to coarse aggregate and mineral admixture materials like Fly Ash and Silica Fume. For this purpose, along with a Control Mix, 12 sets were prepared to study the compressive strength, tensile strength and flexural strength. Each set comprises of 4 cubes, 2 cylinders and 2 prisms. Slump test were carried out for each mix in the fresh state. 28-days Compressive test, Tensile Strength and Flexural Strength tests were performed in the hardened state. The study is also extended for blending of concrete with different types of mineral admixtures. The test results showed an overall strength & weight reduction in various trails. Therefore, the light weight concrete is no way inferior for construction purpose. Most of the normal weight aggregate of normal concretes is natural stone such as lime stone and granite. With the increasing amount of concrete used, natural environment and resources are excessively exploited. Synthetic light weight aggregate produced from environmental waste like fly ash, is a viable new source of structural aggregate material. The use of light weight concrete permits greater design flexibility and substantial cost savings, reduced dead load, improved cyclic loading, structural response, longer spans, better fire ratings, thinner sections, smaller size structural members, less reinforcing steel and lower foundations costs. Light Weight Aggregate is a relatively new material. For the same crushing strength, the density of concrete made with such an aggregate can be as much as 35 percent lower than the normal weight concrete. In addition to the reduced dead weight, the lower modulus of elasticity and adequate ductility of light weight concrete may be advantageous in the seismic design of structures. Other inherent advantages of the material are its greater fire resistance, low thermal conductivity, low coefficient of thermal expansion and lower erection and transport costs for prefabricated members
KEYWORDS : Light weight concrete, Natural aggregate, light weight aggregate, coarse aggregate

Paper Title

STRENGTH AND DURABILITY PROPERTIES OF CONCRETE WITH PARTIAL REPLACEMENT OF CEMENT WITH METAKAOLIN AND MARBLE DUST

Abstract

In this study partial replacement of cement has been done at 0%,3%,5%,9%,12%,13% with MK(Metakaolin) and 0%,10%(constant) with MP (Marble Powder). Compressive as well as tensile strength of concrete made with MK-MP has been compared with conventional concrete of grade M30. Durability of concrete was also analysed with RCMT (Rapid chloride Migration Test). Result shows that there is a gain of strength with the addition of MK and MP. The optimized strength value of concrete was achieved for both compressive as well as split tensile strength at 9%MK and 10%MP. RCMT shows that with the increase of addition of Metakaolin and Marble powder, there is a decrease in rate of penetration of chloride ions, hence good durability as compared to standard concrete In construction Industry, consumption of cement is increasing day by day as well as cost is also increasing so to reduce the consumption of cement, partial replacement with Metakaolin and Marble powder was done in this study. Metakaolin is a calcified clay and easily available in Gujarat, Maharashtra & Bombay etc. It is a Dehydroxylated form of the clay mineral Kaolinite. Stone having higher percentage of Kaolinite are known as china clay or kaolin, was traditionally used in the manufacture of porcelain i.e. ceramic material. The particle size of Metakaolin is smaller than cement particles. Marble dust is obtained from cutting and manufacturing industries of marble. In India near about 3500 metric tons of marble dust slurry per day is generated. So, Marble dust is very easily available with very less cost. Some of industries used to wash out this marble powder with water in natural streams which cause water pollution and is harmful for our environment. So, it is advisory to use marble dust as partial replacement with cement as it has properties similar to cement and one of good pozzolanas. Similarly use of MK leads to Green concrete, because during production of MK there is no emission of carbon dioxide, also MK is good admixture for high early age strength, known as HPC etc. Since there is large emission of carbon dioxide in manufacturing of cement and clinker, results in 3-5% increase in greenhouse gasses and global warming.
KEYWORDS : Metakaolin; marble dust; strength; durability; Modulus of Elasticity

Paper Title

STABILITY OF MANUFACTURE SAND AS FINE AGGREGATE WITH FIBRE REINFORCED CONCRETE

Abstract

The experimental study of fibre reinforced concrete with manufacturing sand (M-Sand) in addition of crimped steel fibres. Normally a huge quantity of concrete is required for the construction but we know that concrete is weak in tension and strong in compression and the fine aggregate that normally used for concrete is natural river sand but our aim is to replace the natural sand by artificial sand (manufactured sand) and to increase the compressive and tensile strength of the concrete by addition of steel fibre .To over-come the difficulties due to excessive sand mining, M-Sand is used as fine aggregate. M-Sand is uniformly in size, produced from gravel crushers. The main objective of this research is to investigate the effect of steel fibres on concrete manufactured by M-sand as fine aggregate and develop a high-performance concrete. It is proposed to determine and compare compressive strength, split tensile strength of the concrete and flexural strength of concrete grade M30 having different percentage of steel fibre (0%, 1%, 1.5% & 2%). And different percentage of manufacture Sand (0%, 20%, 40%, 60%,80%,100%) The chemical admixtures is used to increase the workability of concrete. The investigation is carried out by conducting compressive strength test, split tensile test and flexural strength of concrete
KEYWORDS : Steel fibre, M-sand, compression test, split tensile test and flexural strength

Paper Title

AN EXPERIMENTAL STUDY ON CONCRETE WITH PARTIAL REPLACEMENT OF HYPO SLUDGE IN CEMENT

Abstract

The global cement industry contributes about 9% of greenhouse gas emission to the earth’s atmosphere and industrial wastes are being produced by 420 million tonnes per annum by chemical process in India. In order to reduce cement manufacturing and disposal problem of paper waste, there is a need to develop alternative binders in construction field. Utilization of industrial waste products as Supplementary Cementitious Material (SCM) in concrete is very important aspect in view of economic, environmental and technical reasons. This work examines by using paper waste (hypo sludge) as partial replacement of cement & it is most essential to develop profitable building materials from hypo sludge. It is directed towards developing low cost concrete and light weight concrete from paper industry waste. The use of hypo sludge in concrete. These tests were carried out to evaluate the mechanical properties like compressive strength and spilt tensile strength and flexural strength up to 7 days, 14 days and 28 days. In this work, M30 grade concrete was developed by replacing cement via 10%,15%,20%,25% and 30% of hypo sludge. The strength on concrete made with hypo sludge are compared with normal concrete. industrial wastes are being produced per annum by chemical and agricultural process in India. These materials possess problems of disposal and health hazards. The wastes like phosphonyls, fluor gypsum, hypo-sludge and red mud contain obnoxious impurities which adversely affect the strength and other properties of building materials based on them. To reduce disposal and pollution problems emanating from these industrial wastes. it is most essential to develop profitable building materials from them. This project is concerned with experimental investigation on strength of concrete and optimum percentage of the partial replacement.
KEYWORDS : Concrete, Compression Test, Hypo-Sludge, Industrial wastes, Split Tensile Strength

Paper Title

MODELLING AND THERMAL SIMULATION OF COMPOSITE WICK HEAT PIPES USING ETHANOL

Abstract

Heat pipes operate with the highest thermal conductivity compared to any other heat transfer and are available in a wide range of parameters. In the present study the flow of water in the phenomenon of simultaneous evaporation, adiabatic and condensation in plain thermo-siphon, sintered copper wick and helical grooved heat pipes is studied using heat pipe testing equipment. This device uses a water jacket with a controlled flow of water to dissipate heat energy to the end of the heat pipe and condenser subject to a predetermined heat dissipation by the resistance heater at the end of its evaporator. All temperatures are measured and the calculations required to obtain percentage efficiency at different flow rates and heat inputs are performed. A comparison is made between the performance of the heat pipes and their capacities. Container thickness in working fluid fluid ethanol wick is 0.5 mm as 50 to 800 watts evaporator 30, condenser 72, adiabatic 110, flat heat pipe width 7.6 mm, thickness 3.4 mm heat pipe has high capillary property. Variations of the evaporator and condenser surface temperatures are plotted to change the heat inputs and flow rate changes at the condenser water jacket. ANSYS software is used for computational analysis and the experimental results are in good agreement with the analysis.
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Paper Title

MODELING AND SIMULATION OF AN OVER-BRIDGE

Abstract

In many countries composite bridges have become a popular solution because they have many advantages over steel girders because they can carry the weight of formwork and wet concrete. The competitiveness of composite bridges has been increasing in recent years. Composite girders not only have lower deflections and economical sections but also reduce construction time, which is an added benefit to the constructor. This project gives a brief overview of bridges that highlight composite bridges. Our work involves the design of a road overbridge with composite welded steel girder-RCC deck slab for Atvo-Laneheavy traffic road needs. A detailed design for RCC deck slab, main girders, cross girders, stiffeners, bracing, bearings, connections is displayed along with partial analysis using STAAD.VI8. Indicated codes are IRC-22, IRC-24, IRC-21, IRC-6, IRC-83 and IS-456 and steel tables for selection of steel sections. The obtained design details and results are included.
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Paper Title

CLASSIFICATION OF ULTRASOUND IMAGES REGARDING FEATURES ASSOCIATED WITH FOLLICLES USING BINARY HYPOTHESIS TECHNIQUE AND SUPPORT VECTOR MACHINE METHOD

Abstract

This paper explains the commonsense technique to characterize ultrasound polycystic symbolisms dependent on the shape highlights of follicular sores. On a considerably basic level, arrangement alludes to design acknowledgment. For this situation, designs are shape highlights of follicular growths. The elements of the pimples add up to their sizes. Contingent upon the size of blisters and number of sores, an ovary could be delegated polycystic.
KEYWORDS : Polycystic, Cysts, Hypothesis, Vector, Classification.

Paper Title

EXPERIMENTAL INVESTIGATION FOR HEAT TRANSFER AND FRICTION CHARACTERISTICS OF HELICAL INSERTS IN A COUNTER FLOW HEAT EXCHANGER BY USING WATER + TiO2 NANO PARTICLES

Abstract

The objective of the project is to establish the capability of Nano-fluids to enhance the Heat Transfer Coefficient when used on the cold side of a Heat Exchanger and antifreeze is mixed with Water. In the present experimental investigation, an experimental test is to be conducted on a counter flow heat exchanger. For the investigation, Nano-fluids are to be prepared with TiO2 particles of 30 Nano meters size and are to be dispersed in distilled with various volume concentrations. The properties of these Nano-fluids are estimated using method of mixtures. Experiments are planned to be conducted using distilled water on hot fluid side and Nano-fluids on cold side of the Heat Exchanger. Helical inserts of size from 2 mm to 5 mm are to be used to create turbulence on the cold side of heat exchanger so that it helps to absorb more heat. Temperature measurements are made at the inlet and the outlet side of the Heat Exchanger on hot and cold fluids. Mass flow rate measurements are made using the collecting tank and stop clock.
KEYWORDS :