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Research Paper on Floating Concrete

By
Vikramaditya Pandey

Abstract
Floating concrete is a fluid mixture of density less than water, which is suitable to build floating structures, reducing the consumption of land for buildings. This project report addresses the procedure of preparation of mix proportion of floating concrete, materials used & various test results of compressive strength at the age of 7 days & flow, for acceptance of this concrete. Also, it presents an application of this concrete for canoe construction along with a light weight but, strong reinforcement. Despite the self weight of the canoe, it can bear a certain amount of external load.

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Structural Health Monitoring – A Case Study Of Toopilipalem Sea Water Intake Structure

By
1V. Siva Teja 2N. Tharun

1III B.Tech Student, Dept Of Civil Engineering, N.B.K.R IST
2III B.Tech Student, Dept Of Civil Engineering, N.B.K.R IST

ABSTRACT – Civil engineering structures are used for various purposes like residential, industrial, transportation, commercial, etc. and are thus classified into various types. Any of construction project involves huge amount funds been invested in them. As India is expected to be next ruling nation there is great scope for construction industry in coming years. But in recent years there have been great numbers of construction failures which occurred in India which gave rise to utmost need to investigate the causes for these failures and to determine the preventive measures to prevent such failures from occurring in future by taking few learning lessons. The structural and construction safety is still an issue which exists with all the construction projects. This paper emphasizes on the types of failures and responsible causes for constructional failures in today’s construction industry. For this purpose an analyzation of causes of failure of the case study of Toopilipalem sea water intake structure was taken into account. The main aim is to minimize the problem of failure from civil engineering field by taking learning lessons from these devastating incidences.

KEYWORDS:Structure,Failure,Reason,Environment

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Effects of Fillers on the Stability Properties of Stone Matrix Asphalt (SMA)

By
G.H V SAI SIMHA 1
1. Graduate Student, Department of Civil Engineering, K L University, Vaddeswaram, Guntur.

ABSTRACT
Harm in adaptable asphalts happen because of the development of overwhelming vehicles and change in climatic conditions. The primary parameters that cause the damage of the asphalt layer are fatigue
cracking and rutting. Cracking can be prevented by maintaining specified temperature during the process of preparation of mix to laying of bituminous mixes. In this way, to keep the rutting, the groove safe blends like Stone lattice black-top also called STONE MATRIX ASPHALT (SMA) must be utilized as a part of the bituminous layers. In this undertaking SMA is chosen to check its execution in all viewpoints, for example, stability (kg), deformation (mm), , volume of voids in mineral aggregates(VMA), with the expansion of fillers. The utilization of mechanical by-items utilized as fillers enhances the building properties of STONE MATRIX ASPHALT (SMA) mixtures. The expanded solidness because of the expansion of the filler is spoken to by an expansion in the softening point, viscosity, stability, and resilient modulus, and also abatement in entrance or decrease in penetration. In this venture the distinctive fillers like glass powder, magnetite (iron pellets), cement kiln dust, and filler fly fiery debris or filler fly ash have been utilized. All out 12 sets of test examples were set up by utilizing distinctive sorts of filler having diverse sum in the mixture. The Marshall properties got for the fillers uncover that, flyash remains filler, examples have been found to display higher stability contrasted with glass powder, cement kiln dust, magnetite. What’s more, magnetite filler indicated least deformation at 6 % bitumen content and the rate of air voids were observed to be diminished with the expansion of bitumen substance.

Keywords: stone matrix asphalt, filler, stability, deformation, Cement kiln dust, magnetite, glass powder, fly ash

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Comparison Between CPCC, FBEC & CRSD

By
Priyanka Gupta

Before doing the comparison study lets know what these terms mean.
CPCC – Cement-Polymer Composite Coated Rebars
FBEC – Fusion Bonded Epoxy Coated Rebars
CRSD – Corrosion Resistant Steel Deformed Rebars

1.0 Corrosion Control of Reinforcement bars (Rebars)
40% of failure of structures is on account of corrosion of embedded steel reinforcement in concrete. Therefore corrosion control of steel reinforcement is a subject of paramount importance.First and foremost for corrosion control is the good quality of concrete through good construction practices.

Fig. 1 Different types of crack formation

Fig. 2 Crack formed due to bursting pressure on account of rusting of reinforcements

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Prevention of corrosion in RCC by bacteria

BY
ANBARASAN.R, MANIKANDAN.P AND SURESH.S,
Department of civil engineering,
IFET College of Engineering. Tamil Nadu, India.

Abstract
Steel gets oxidise (corrosion) in the present of oxygen and water. Even present of oxygen in the concrete pore will not cause a corrosion at high alkaline environment. Concrete contains microscopic pores which contain high concentrations of soluble calcium, sodium and potassium oxides, this creates alkaline condition of pH 12–13. The alkaline condition leads to a ‘passive’ layer forming on the steel surface. The dense passive layer over the reinforcement prevents the alkalinity. This paper involves in the prevention of corrosion by maintaining alkalinity in concrete by using bacteria.

Key words: Reinforced concrete, corrosion, passive layer, alkaline, bacteria.

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