The demand for concrete as a construction material increases exponentially and thereby, there is an increase in the demand for the production of OPC. The environmental issues associated with cement releases around one ton of carbon dioxide to the atmosphere due to the calcinations of limestone and combustion of fossil fuel and cause the global warming condition. In addition, the production of cement is highly energy intensive consuming a large amount of natural resources. To reduce these problems, it is necessary to find out an alternative material for cement. Partial replacement of cement and high volume replacement of OPC with materials having binding properties were studied such as fly ash, GGBS, rice husk ash etc.........

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Author Keywords:- Geopolymers, GGBS, Geopolymer Concrete, Alternative for Conventional Concrete.

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e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 12

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© Copyright 2014, All rights reserved.

This paper mainly introduces the web crawler system structure. Through the analysis of the architecture of web crawler we obtainedfive functional components. They respectively are: the URL scheduler, DNS resolver, web crawling modules, web page analyzer, and the URL judgment device. To build an efficient Web crawler the key technology is to design an efficient Web crawler, so as to solve the challenges that the huge scale of Web brings.

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Author Keywords:- DNS, URL, web crawler, web pages.

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e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 05

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© Copyright 2014, All rights reserved.

Metal matrix composites (MMCs) are materials in which metals are reinforced with other materials preferably of lower cost to improve their properties. In this present study, Brass /Coconut Shell Ash powder (CSAp) composites having 0%, 5%, 10% and 15% weight CSAp were fabricated by stir-casting method. The effects of heat treatment temperatures at 300oC, 350oC, and 400oC on the mechanical properties (tensile strength, hardness and impact strength) and microstructures of the composites were investigated. The tensile strength of the MMCs is in the order 15% > 10% >5% > 0% of CSAp, while the effect of heat treatment temperature on the MMCs tensile strength is in the order 300oC > 350oC > 400oC. Hardness of the MMCs increases slightly with increase.........

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Author Keywords:- Brass, Coconut shell ash, Matrix, Composite, Stir-casting, Mechanical properties, Microstructures, heat treatment temperature.

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e-ISSN: 2319-183X, p-ISSN: 2319-1821 Source Type: Journal Original Language: English
Document Type: Article Number of pages: 10

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© Copyright 2014, All rights reserved.