The Efficiency of Recycling Expired Cement Waste in Cement Manufacturing: a Sustainable Construction Material (original) (raw)
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Spanish Journal of Agricultural Research, 2010
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International Journal of Advance Research, Ideas and Innovations in Technology, 2019
Day by bay population growth rate is increasing as the same construction growth rate is also rising. Since a large number of natural resources and materials were used. Also, cement is used in a huge quantity which causes rising Co2 pollution, so because of this, we need to find a new substitute for cement. Disposal problem of waste material is becoming critical day by day. Millions tone of waste is generated every year in the world. In this topic, an attempt has been made to utilize, which is waste of industry, municipal solid waste, agricultural waste. The research work is the determination of the effect of the use of various waste as a replacement of cement to assess the pozzolanic nature. Also comparing the chemical compositions of various waste materials, physical and chemical properties were studied. Then final result concluding the best materials which are most widely used globally in a bulk quantity. Reduce the demand for cement, glass powder decreases the unit weight as well...
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Environmental analyze of cement production with application of wastes
The cement production is benefiting worldwide by use of waste fuel since 30 – 40% of total costs are attributed to energy cost. The application of mineralizer has also economic advantages due to reduction of clinkering temperatures. In this context the present work proposes analyzing different option of waste fuels through case studies (tires, plastics, woodchips and switchgrass) and the use of mineralizer in clinker production. The results showed that the waste fuel plastic emitted 8% less CO2 than woodchips, and all case studies emitted SO2 below of limit established by Directive PE-CONS 31/10. The mineralizer applied reduced the specific heat consumption in 12% and the CO2 emissions were decreased in 4%. Todos as informações e direitos sobre o presente artigo são de total e única responsabilidade do(s) autor(es).
IN PERSUIT OF ALTERNATIVE INGREDIENTS TO CEMENT CONCRETE CONSTRUCTION
IJRET, 2013
Due to rapid demand and growth in infrastructure, the natural resources are fast depleting. The production of cement and aggregates consume energy which are responsible for increase in concentration of carbon dioxide in atmosphere. On the other hand huge amount of wastes are generated in various fields which are not being utilized other than for landfilling, incineration and a very few reused having a recycle value. Some wastes are biodegradable while others are toxic or harmful to environment. Hence there appears to be an urgent need to search for alternative materials, which can replace existing ingredients partially or fully, thereby reducing energy consumption and reduced CO2 emission. This paper discusses some options which appear to be promising in this direction.
2012
Recycling of waste has a great importance in preservation of the energy and decreasing the global impact that has been created by production of new materials. There is an increasing debate about the use of waste tires because of their environmental and health affects. Waste tires can be used for a range of civil engineering applications. This study investigates the physical and mechanical properties of CEM II (reference) and waste tire powder substituted cements. For this purpose, waste tire powder was substituted as a replacement for CEM II cement in amounts of 0, 2.5, 5, 7.5 and 10 weight %. The effects of waste tire powder on compressive and flexural strength, setting time, water demand and volume expansion were determined by standard tests of cement. As a result, a relative increase according to reference cement pastes was determined in the setting time of the waste tire powder substituted cement pastes. Besides these, a decrease were identified with the 2, 7, 28 and 56 days flexural and compressive strength tests for the waste tire powder substituted cement mortars according to reference cement mortars.
IRJET, 2020
The target of analysis proposal area unit to review the influence of proportion of copper Scoria as partial replacement of cement. The main points scope of the study is, to research the unreal sand mixed concrete containing five-hitter, 10 percent, V-J Day and 2 hundredth of Cs as partial replacement of cement and to gauge the mechanical properties of concrete likes a compressive strength, split durability and flexural strength. This study has been administrated to analyse the potency of copper scoria by exchange cement within the proportion of 1/3 [while not copper scoria], 5 percent, 10 percent, 15 percent, and 2 hundredth with 100 percent artificial sand. Six concrete mixes [C0, C5, C10, C15, C20 and natural concrete Old North State] were created by exchange cement with five-hitter, 10%, V-J Day and twenty you look after copper scoria by mass severally. The water/cement quantitative relation all told the mixes was unbroken at zero.45. As per warming is concern, efforts area unit created toward reducing the emission of carbonic acid gas within the atmosphere. Cement industries area unit the foremost contributor within the emission of carbonic acid gas in addition as exploitation high level energy resources within the production of cement. Researchers from everywhere on the globe area unit specializing in the approach of utilizing industrial waste, as supplementary cement replacement materials. This waste exercise wouldn't solely be economical, however can also facilitate protective the atmosphere.
Construction and Demolition Waste as Raw Materials for Sustainable Cements
Sustainable construction materials and technologies, 2016
In 2014 about four billion tonnes of cement were produced [CEMBUREAU, 2014]. The use of industrial by-products, as a source of raw materials in the manufacture of portland and blended cements, is a research theme of significant relevance to the construction industry. Such industrial byproducts can be employed as constituents of the final product or components of the raw feed in a cement kiln. Due to their hydraulic and/or pozzolanic activity, industrial by-products are utilized worldwide. Such by-products also increase durability and reduce costs for producing blended cements. The use of such by-products as raw mixture component for the cement production has received comparatively little attention by researchers and engineers. There is currently an increasing interest towards searching for new categories of by-products, which would be able to provide reactive calcium, silicon, aluminum, and/or iron oxides, for portland cement clinker manufacture. In this regard, construction and demolition waste (C&DW) is worthy of consideration because, when obtained from a properly selective demolition process, they could be employed as alternative raw material for portland clinker production. The present study deals with the use of two different kinds of C&DW, namely concrete waste (CW) and masonry waste (MW). In this study, C&DW is proposed to be employed as partial or total substitute for limestone and clay, respectively, in the portland clinker generating raw mixture. Four ternary mixtures containing limestone, as well as CW and MW, were subjected to laboratory tests in order to evaluate the clinker raw mixture produced and the performance of the related portland cement. A binary mixture, composed of limestone and clay, was used as a reference. All of these different cements displayed similar hydration behavior. Detailed results are presented and discussed.