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Fly Ash Determination In The Supplied Portland Pozzolana Cement

By
Er. Kaushal Kishore ,
Materials Engineer, Roorkee

There is no direct method for the determination of Fly Ash content in the PPC. However, based on the past test results of insoluble Residue in the PPC, Fly Ash content in the supplied PPC may be obtained.

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Simple Testing Of Admixtures And Surface Coating For Permeability To Water.

By
Er. Kaushal Kishore ,
Materials Engineer, Roorkee

This method of test describes the procedures for determining concrete permeability to water by capillary absorption method for comparison between controlled specimens and the specimens containing admixtures having surface coatings. This method gives the waterproofing efficiency of admixtures and coating, thus also of the greatest interest for durability of concrete offers protection to reinforcement from corrosion.

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A Vision for Sustainable Construction Combined Efforts by Government and Construction Industry Together

Abstract:
History itself is the evident that from the years together the people moves to the region where they can satisfy their needs and wants with fewer efforts and more opportunities. This thought lead to accumulation of people in some areas resulting in urbanization. As this urban area contributes highly in nation’s economy even the government announce a far reaching progamme of investments in urban development. However, these urban agglomerations manifest generally unsustainable ecologies. The depletion of material resources, the accumulation of waste, and the over-expenditure of non-renewable energy are direct consequences of the predatory expansion of urbanization.

Out of this the major contribution goes to construction industry as the data reveals that Construction is responsible for 40% of the total world flows of raw materials such as sand, gravel and clay. It takes one quarter of all virgin wood, 40% of energy use, 16% of water withdrawals, and produces 17% of all waste generated. If this practise goes on uninterruptible it will cause total exhaustion of natural resource and will create a great question for generations to come for their survival.

This paper aims to add up a new dimension in vision for sustainable development by considering a combined effort of government and industry both. Strategy for the same considers the sustainable development in three phases such, first is the consideration of various tool to achieve it that are Means such as procurement, Design, Innovation etc. Second stage basically defines the ends out of it such as mitigation in climatic changes, water conservation; reduce in wastage and overall optimum use of resources. Final is the controlling stage which is supposed to achieve by using the tools such as implementations of rules for carbon emission and wastage made, formation of government agencies for environmental auditing etc.

This view for Sustainable Construction lays out specific actions by industry and by Government which will contribute to the achievement of overarching targets within each of the main areas covered by the sustainability agenda.
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Roof Waterproofing By Brick Bat Coba

By
Er. Kaushal Kishore ,
Materials Engineer, Roorkee

INTRODUCTION
Waterproofing is a treatment of a surface or structure to prevent the passage of water under hydrostatic pressure. Waterproofing barrier system may be placed on the positive or negative side. Damp proofing is a treatment of a surface or structure to resit the passage of water in the absence of hydrostatic pressure. A damp proofing barrier system is used to perform the same functions as a waterproofing system but cannot be used to protect against water pressure. Water may be forced through building members by hydrostatic pressure, water vapour gradient, capillary action, wind-driven rain, or any combination of these. This movement is aggravated by porous concrete, cracks or structural defects, or joints that are improperly designed or installed. Leakage of water into structure may cause structural damage, and invariably cause damage to the contents of the structure.

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Save Environment With Green Construction

By
Er. Kaushal Kishore ,
Materials Engineer, Roorkee

NEW CEMENT
Portland cement, is made by a calcareous material, such as limestone or chalk, and from alumina and silica found as clay or shale. The process of manufacture of cement consists essentially of grinding the raw materials, mixing them intimately in certain proportions and burning in a large rotary kilin at a temperature of up to about 14500C. When the material sinters and partially fuses into balls known as clinker, the clinker is cooled and ground to a fine powder, with some gypsum added, and the resulting product is the commercial portland cement so widely used through out the world. The manufacturing of this cement release in the atmosphere 0.8 tonnes of CO2 in the production of one tonne of cement. When water is mixed with cement and aggregates in the production of concrete for use in the construction, each tonne of cement can absorb up to 0.4 tonnes of CO2 , but that still leaves an overall carbon footprint per tonne of 0.4 tonnes. In the year 2009 about 2000 million tonnes of CO2 was emitted in the atmosphere in the production of cement.

The above problems have been overcome from researches by Nikolas Vlasopoulos Chief Scientist and his colleagues at Imperial College, London, and they have set up a company of Novacem’s cement which is making cement from magnesium silicate that absorb more CO2 as it hardens. Valaspoulos responded that magnesium slicates are abundant world wide with 10,000 billion tonnes available. He is confident that material will be strong enough for use in buildings but acknowledge that getting licence to use it will take several years of testing.
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