Your search returned over 400 essays for "cement"
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Cement Production Of Cement

- Chapter 1 Introduction 1.1 General Concrete is the second most consumed material on Earth after water. On an average, each year, three tons of concrete are consumed by every person on the planet (Madeleine Rubenstein, 2012). Cement production is a significant source of global carbon dioxide (CO2) emissions, making up approximately 2.4 percent of global CO2 emissions from industrial and energy sources (Marland et al., 1989) which contributes to global warming. The production of the cement most commonly used to make concrete is responsible for up to 8% of all anthropogenic CO2 emissions....   [tags: Concrete, Cement, Portland cement, Pozzolan]

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Alkali Reactive Aggregates. What Happens When Alkali Cement is Low

- Considerable bad experience has been encountered when alkali reactive aggregates have been used.Low alkali cement is normally required to protect against disruptive Expansion of concrete which occurs generally due to alkali-aggregate reaction.(a chemical reaction between alkali’s in the cement and reactive aggregates.Another means of of controlling alkali-aggregate reactions is by the use of suitable fly ash or natural pozzolan.If a highly reactive aggregate have to be used then it is necessary to use a low alkali cement and a pozzolan....   [tags: type 2 cement, concrete, uniformity]

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Urban Alienation in Ian McEwan's The Cement Garden

- Urban Alienation in Ian McEwan's The Cement Garden It was not at all clear to me now why we had put her in the trunk in the first place. At the time it had been obvious, to keep the family together. Was that a good reason. It might have been more interesting to be apart. Nor could I think whether what we had done was an ordinary thing to do In this essay I shall be examining the socio-cultural context of The Cement Garden by Ian McEwan (1948 - ). Once placed within context, an examination of the internal worlds of the bereaved children will follow....   [tags: Ian McEwan The Cement Garden]

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Environmental Impact Analysis of Cement Plant in Ethiopia

- . Results on Impact Significance determination 4.1. Criteria Identification and Weighting Impact is characterized by the nature, magnitude, spatial extent, timing, duration, reversibility, likelihood, frequency and mitigation potential (Sadler and McCabe 2002). Such criteria characterize all types of impacts in general. Since the study focused on local scale, six criteria were adopted (Kumar & Armani, 2012) to compare and judge the impacts that was identified during impact identification (Table 2)....   [tags: The Case of Messebo Cement Factory]

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Cartelization in the Cement Industry

- Contents Introduction 1 Literature Review 2 The Players 3 APCMA 3 CCP 5 Major Companies 7 Foreign Investors 9 Cartelization in an Industry 11 Cartelization in the Cement Industry 12 Impact of Cartelization 13 References 14 Introduction   Literature Review   The Players APCMA APCMA stands for the All Pakistan Cement Manufacturers Association. It is the top body for cement manufacturers in Pakistan. The organization is registered under Section 3 of the Trade Organization Ordinance of 2007....   [tags: Literature Reviews, Major Companies, Investors]

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The durability of cement paste

- The durability of cement paste is one of the most topical field nowadays that economic restraint and conservation will remain the rule of the day. The term "degradation" means that the cement paste fails to serve the intended purpose for the length of time expected. It should be noted that normally, cement paste often does have an essentially indefinite life span, in the absence of degradation processes [32]. Physico-chemical cement degradation can be thought of in two categories. They are physical action which breaks hardened cements down into smaller fragments and chemical action which alters their components into different species and chemical action usually consisting of dissolution of...   [tags: Chemical Degradation]

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Development Material: The Cement

- COCONUT SHELLS AS AGGREGATE REPLACEMENT IN CONCRETE INTRODUCTION Cement is world's most broadly utilized development material. The use of cement is expanding at a higher rate because of improvement in foundation and development exercises all as far and wide as possible. The climbing expense of development material is a matter of concern. The purpose behind increment in expense is popularity of cement and shortage of crude material. Thus the solid technologists must look for some temperate elective to the coarse total....   [tags: coconut shells, concrete, natural fibre]

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Cement and Hydraulic Fracking

- Within the past year the growing topic of discussion in Southern Illinois has been hydraulic fracking. Simply put, hydraulic fracking is “a process in which fractured rocks below the earth’s surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.” (“hydraulic fracking”, Hydraulic fracking, as with any other topic, has both positives and negatives. Although this is hardly new, it is continuously growing and so is the controversy surrounding it....   [tags: natural gases, oil, hydrocarbons]

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Cement Cementing Materials In Construction Materials

- Cement mortar is typically the most massive individual material element in the built environment. If the embodied energy of mortar can be reduced without decreasing the performance or increasing the cost, significant environmental and economic benefits may be realized. Cement mortar is primarily comprised of portland cement, aggregates and water. The introduction of nanomaterials or lamellar solids in cement mortars and concrete to improve their mechanical properties has been widely employed in modern concrete technology....   [tags: Concrete, Titanium dioxide, Nanotechnology]

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Climate Change: Turning Carbon Dioxide in Cement

- ... This process is intended to mimic sea cement. Sea cement is produced by coral when making their reefs and shells by taking the calcium and magnesium in seawater and using it to form carbonates at normal temperatures and pressures. The process is turning the CO2 carbonic acid and then making carbonate, which means that water and pollution are the basic necessities of turning the CO2 emissions into cement. Figure 2 shows the process of converting Carbon Dioxide into self-cement and other chemicals....   [tags: calcium silicales, limestone]

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Your search returned over 400 essays for "cement"
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