Research Journal of Engineering and Technology

M. Vijaya Sekhar Reddy ¹, K. Ashalatha ²

Affiliations
1 Department of Civil Engineering, Srikalahasteeswara Institute of Technology, Srikalahasti, Andhra Pradesh,, IN
2 Department of Civil Engineering, Srikalahasteeswara Institute of Technology, Srikalahasti, Andhra Pradesh, IN

Abstract

Concrete has today very demanding performance requirements. The concrete durability crisis which started to attract public attention forced the engineers to think about the performance of concrete proper mix design and careful construction using the best available materials and technologies are necessary to achieve quality concrete structures. The February 2007 report issued by the International Panel on Climate Change (IPCC) has started in no uncertain terms that global warming is no longer an issue that has to be debated. According to the report, global warming is here, and drastic actions are needed for the long term sustainability of our environment. Curing of concrete plays a major role in developing the concrete microstructure and pore structure and hence improves its durability and performance. It is in this context that this paper discusses the role of supplementing cementing materials as partial replacement for cement in concrete in reducing green house gas emissions. In the last decade the use of Supplementary Cementing Materials (SCM) has become an integral part of high strength and high performance concrete mix design. The addition of SCM to concrete reduces the heat of hydration and extends the service life in structures by improving both long term durability and strength. The addition of SCM to concrete reduces the heat of hydration and extends the service life in structures by improving both long-term durability and strength. Some of the commonly used SCM’s are Flyash, Silica fume, Blast furnace slag and Metakaoline. This paper presents the results of the durability characteristic properties of M30 grade of concrete without superplasticizer. The durability was evaluated using Rapid Chloride Permeability Test.

Keywords

Standard Concrete, Supplementary Cementing Materials (SCMs), Durability, Rapid Chloride Permeability Test.

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M. Vijaya Sekhar Reddy ¹, M. Madhuri ², K. Sasi ², K. Ashalatha ²

Affiliations
1 Department of Civil Engineering , Srikalahasteeswara Institute of Technology, Srikalahasti, Andhra Pradesh, IN
2 Department of Civil Engineering, Srikalahasteeswara Institute of Technology, Srikalahasti, Andhra Pradesh,, IN

Abstract

The plain concrete possesses a very low tensile strength, limited ductility and little resistance to cracking. The addition of small, closely spaced and uniformly dispersed fibres to concrete would act as crack arrester and would substantially improve its static and dynamic properties. This paper presents the variation in strength characteristics of fibre bricks by varying the percentage of fibres and class F flyash. the percentage of fibres is varied from 0.25% and 0.5% An effort for an alternate approach in the experimental manufacturing of brick was accomplished by using various supplementary cementing materials like class F Fly ash, Hydrated lime and fibres such as jute and banana are used as key ingredients in the present investigation. Recycling such wastes by utilizing them into building materials is a moderate solution for the environmental pollution issues. Much of an emphasis is laid on energy saving and economy. In this experimental work an attempt is made for such an alternate approach.

Keywords

Natural Fibre, Jute Fibre, Banana Fibre, Fly Ash Bricks, Split Tensile Strength.

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