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536 Uppsatser om Self-compacting concrete - Sida 12 av 36

Underhållsfria material i broöverbyggnader : Fördelar ur kostnads- och miljösynpunkt vid användning av rostfritt stål och direktgjuten betong

En stor del av Trafikverkets budget går till att reparera och underhålla våra broar. Underhållsåtgärder orsakar också trafikproblem med stora miljöutsläpp och samhällskonsekvenser som följd. Eftersom broar vanligtvis dimensioneras för en lång livslängd på 120 år är det viktigt att planera för långsiktiga lösningar och förutse konsekvenserna av kommande underhållsåtgärder. Genom att använda mer underhållsfria material finns möjligheten att minska kostnaderna och koldioxidsläppen.Målet med examensarbetet är att ta reda på hur stora besparingarna är genom att svara på frågan: ?Vilka fördelar erhålls av att använda mer underhållsfria material i broöverbyggnader ur kostnads- och miljösynpunkt??.

Bestämning av skjuvhållfasthet med vridprovning för pågjutna betongkonstruktioner

Skador och slitage på brokonstruktioner av betong beror på tösalter, armeringskorrosion och frostcykler i kombination med ökande trafiklaster. Den i särklass vanligaste reparationsåtgärden för dessa typer av skador är att göra en pågjutning. Metoden går ut på att först avlägsna det skadade eller dåliga betongskiktet innan en ny betong pågjuts. För att bedöma hur bra ett pågjutningsarbete är behöver vidhäftningen mellan den nya pågjutningen och gamla betongen fastställas. Den mest använda metoden för detta syfte är s.k.

Framtagning av typgodkända formkonstruktioner : Med inriktning mot traditionell väggform

This diploma work was conducted in collaboration with the Swedish civil engineeringconstruction company Skanska Construction in Stockholm. Their interest is todevelop a number of type approved form constructions which can be used during theconstruction of concrete walls. Skanska focuses on improving safety on their projectsand both supervisors and workers have a need for approved form constructions inthe current situation.The study is focused on safety and the purpose is to facilitate the preparation beforethe form work can begin. By studying the literature of the subject and conductinterviews with employees at Skanska Construction, the understanding of the issueand knowledge will be increased.Literature studies, interviews together with production and design have been thebasis for a successful study. The work has resulted in three types of approved formconstructions to Skanska Construction and the drawings can be used of employees atthe company.

Standardisering och optimering av packningsprocess

This is a thesis performed at GEMS PET Systems AB in Uppsala. GEMS PET Systems AB is a company within GE Healthcare. GEMS PET Systems develops and manufactures equipment for manufacturing of radioactive isotopes for PET which is a scanner used in medical applications. The systems includes an accelerator of cyclotron type and other support equipment. One system is shipped in two or three containers depending on order configuration.

Produktplacering i svensk film i jämförande internationellt perspektiv

I will write about product placement in film from a Swedish point of view. This entails writing about Swedish films with different types of product placements, not only how they are done but also discuss how they succeed from a sales perspective. In my earlier work I have written about the product placement of watches. In this thesis I focus on the film series about the Swedish agent Carl Hamilton, since here you can see how Swedish film has developed during the past 30 years with regard to product placements. Both world politics and the concrete placements are illustrated in a clear way.

Föroreningsspridning via ledningsgravar : en fältstudie på Köpmanholmens industriområde

Sewer trenches usually contain material with a higher hydraulic conductivity then the adjacent soil. Thus they can serve as paths of preferential flow in a polluted area. Wastewater from factories can also leak from wastewater pipes and pollute the soil in the sewer trenches.The purpose of this project was to investigate pollutions in sewer trenches and in sewer pipes in the industrial area of Köpmanholmen, 20 km south of Örnsköldsvik in the north of Sweden. To make an estimation concerning the potential of transport of pollutions in sewer trenches, hydrological calculations were performed.Leakage to any greater extent did not seem to be a problem in the area. This is the case both for the concrete and the wooden pipes that have served as factory wastewater pipes.

Made in Sweden : En studie av svensk jordbruksproduktions villkor på en konkurrensutsatt marknad

Background: The situation for Swedish agricultural production today is characterized by an increased competition, particularly after the country joined the European Union. Swedish agricultural production laws guarantee safe, high quality foodstuffs. However, due to these strict laws, Swedish farmers face higher production costs than their competitors. Meanwhile, cheaper imported goods compete freely on the Swedish market. Swedish agricultural production must find new ways to survive in the increasing competition.

Paradoxens styrka och kraft : En studie av paradoxala inslag i Samuel Backetts verk i väntan på Godot

AbstractThe purpose of this investigation is to find out how the pupils can discover and to feel joy in their creative art activity and also to believe in their own ability. The aim is to figure out if creative art activity is able to raise the pupil?s self-image. By literature, pedagogue interviews, and interviews with pupils at the age of ten years old and by action research is the way that I have searched for an answer for my question. The main result is that fantasy, creativity, courage and lust are important parts to develop in the job of raising the self-image.

Politikerrollen - en självständig individualist eller en väljarbunden folktribun

In this essay, the aim is to study the role the politicians play in relation to the people they represent. This is manly a theoretically study, which focus is on the theories behind the way we choose to identify the role of politicians. We ascribe different underlying values to the role of politicians and as a result from these different values a conflict can arise. Two central terms in my discussion are the way the politicians represent people's values and meanings combined to the possibilities for the people to hold the politicians responsible. Depending on which ethic values you put to the role, you have different views about how the politicians should act.

Förslag till ombyggnation av klipp- och bockningsmaskin

This thesis work has been performed on request by SWT (Scandinavia WeldTech AB). SWT manufactures, develop and sell ready to assemble building systems for concrete rafter beam applications. The beams in this system consist of a u-beam that is welded to a flange. To be able to fill the beams with concrete there is holes in the beams top end. The holes are made in a ?punching machine?.  These holes are cut out and the remaining steel piece is bent down in the u-beam.

Bildskapande : Redskapet för bättre självuppfattning?

AbstractThe purpose of this investigation is to find out how the pupils can discover and to feel joy in their creative art activity and also to believe in their own ability. The aim is to figure out if creative art activity is able to raise the pupil?s self-image. By literature, pedagogue interviews, and interviews with pupils at the age of ten years old and by action research is the way that I have searched for an answer for my question. The main result is that fantasy, creativity, courage and lust are important parts to develop in the job of raising the self-image.

Har ni någon bra kärleksroman? : en studie av indexering av skönlitteratur vid stadsbiblioteken i Malmö och Mölndal

Har ni någon bra kärleksroman? : en studie av indexering av skönlitteratur vid stadsbiblioteken i Malmö och Mölndal. Have you got a good love story? : a study of fiction indexing at the public libraries of Malmö and Mölndal.The thesis analyses interviews with users of two Swedish public libraries to find aspectsof fiction important to users and consequently to be considered when indexing fiction.Descriptions of a novel by 50 users at each library are compared to the index terms usedfor these novels. For the analysis, the authors propose a model of their own based onAnnelise Mark Pejtesen's AMP system for fiction indexing.

Barn och ungdomars upplevelser och behov av stöd då de kommer i kontakt med mobbning

AbstractThe aim of this study was to investigate the reason why students contact adults if they are involved in any kind of bullying, what support they had received and wished for, as well as to investigate why student don?t contact adults. About of 150 students, 50 girls and 56 boys (70%) had experienced bullying of different kinds; some had more than one kind of experience. The students expressed that they had contacted adults when they ?felt unwell? and to ?stop bullying?.

Memes och kulturella artefakter

We chose to base our literature study on the meme phenomena. The meme is a portion of culture that is spread among us from mind to mind. Every time we learn something by copying others we use information that has been passed on from a previous person, that information can be seen as a meme. The theoretical frame for our methodology in our exam paper is founded on Forsberg och Wengström research on literature studies. Our aim is to describe to the reader in depth what a meme is and how they could be helpful in an academic and pedagogical setting. Our study will show how memes are seen predominantly as graphic designs and as artifacts for cultural representation parallel to their imagery.

?Känner du dig välkommen?? ? En undersökning om användares upplevelser och åsikter av miljön och servicen i Högskolebiblioteket i Halmstad

The purpose of this thesis is to explore the experiences and views some users have of the library environment and services of the University Library of Halmstad. The main question to be answered in this thesis is what importance the users attribute to the library environment and services while pursuing their most recent library errand. To answer this question a study of relevant literature on the subjects of library environment, library services and user-surveys in other academic libraries was carried out and a questionnaire was distributed to 22 respondents in the process of visiting the University of Halmstad Library. The literature background and the results of the conducted study were interpreted and discussed and led to the following conclusions: 3 respondents encounters with the library environment and its services were negative in part and thus their experiences and views were relevant to the completion of their library errands. The other respondents? encounters confirmed their overall positive earlier experiences and views of the library environment and its services, but had no real concrete significance for the completion of their library errands..

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