Comparison Between CPCC, FBEC & CRSD

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

Department of civil engineering,
IFET College of Engineering. Tamil Nadu, India.

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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Application of Nanotechnology in Smart Civil Structures

Yash Kothari 1, Snehal Dewalkar 2
1Department Of Civil Engineering, Sinhgad Academy Of Engineering (SAE), Kondhwa (BK), Pune-48, India
2Department Of Civil Engineering, Sinhgad Academy Of Engineering (SAE), Kondhwa (BK), Pune-48, India

Nanotechnology has the potential to make construction faster, safer, cheaper and more varied, resulting in smart construction. Automation of nanotechnology construction can allow for the creation of structures from advanced homes to gigantic skyscrapers much more quickly and at much lower cost and higher efficiency. In the near future, Nanotechnology can be used to sense cracks in foundations of structures and can send nanobots to repair them. It can also provide self powered failure prediction and prevising mechanisms for high capital structures.

This paper explores the vision in making of smart and innovative infrastructure and leading a smart city with the help of application of nanotechnology in civil structures.

The study of nanoscience and various nanoparticles and their implementation in construction field is illustrated in this paper. The article further emphasizes more on the futuristic demand and application of nanotechnology in constructing smart structures. The paper is managed to be written in simple language for easy grasping.

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Study On Behaviour Of Concrete Partially Replacing Quartz Sand As Fine Aggregate

E.Divya1 , R.Shanthini2, S.Arulkumaran3
Student, Dept. of civil engg., IFET college of engg., India1, 2
Asst. professor, Dept. of civil engg., IFET college of engg., India3

The use of quartz sand as replacement for sand is an economical solution for making the concrete resistant to weathering. The paper presents a concrete mix design procedure for partial replacement of sand with quartz sand. Present method was performed to evaluate the additional compressive, flexural strength with higher slump over conventional concrete in which sand is replaced with 0%, 25%, 50% and 100% of quartz sand by weight with 1% super plasticizers. The research also revealed that there is possibility of replacing fine aggregate with quartz sand in the production of structural concrete. The mix proportion adopted was 1:1.7:3 as per 10262:2009. Compressive and flexural strength tests were carried out to evaluate the strength properties of concrete at the age of 7 and 28 days. Modulus of elasticity tests were carried out at the age of 28 days.

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Noise Pollution from Vehicular Traffic from Selected Junctions in Bengaluru

Paul Pop, Rashmi Kulranjan, Nived Uthaiah. P, Radhika V G
St Joseph’s College, Bengaluru

Mahesh Kashyap, Consultant, Bengaluru

Noise pollution can be defined as the unwanted sound that is released to the environment and disturbing the human beings. Sources of noise pollution include industrial sources, non-industrial sources, vehicles, uncontrolled use of loud speakers, construction activities such as drilling, etc. Noise levels from vehicles through engines and horns are the main cause of concern in cities and may potentially contribute about 60% of total noise pollution. An attempt was made to measure noise levels emanating from vehicles on selected roads within a radius of approximately two kilometers from St Joseph’s College. These are major roads that witness heavy traffic during peak and non-peak hours. Traffic volume and noise levels were measured at various junctions on these roads during peak and non-peak hours. The study also includes remedial measures that can be implemented to reduce the noise levels.

Keywords: Noise, Vehicles, Pollution, Decibels
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