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Book
Concrete mix design
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ISBN: 085334552X Year: 1972 Publisher: London Applied science publ.

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Book
Handbook schuim
Author:
ISBN: 9050620019 Year: 1986 Publisher: Deeurne

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Book
Concrete ideas : material to shape a city.
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ISBN: 9780500342817 Year: 2012 Publisher: London Thames & Hudson

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This book explores the ways in which new technologies are changing concrete and the ways in which it is used. Through a series of montages, drawings and photographs, it visually speculates on concretes capacity as an urban catalyst, its potential for defining cities and the many ways in which it is being applied in urban renewal. With thoughtful, informed contributions from experts such as Mark West, George Baird, Will Bruder and Charles Waldheim, among others, and specially taken photographs of concrete buildings around the world (although Toronto features heavily as an exemplar of a successful concrete city), this book is key reading for all architecture students and practitioners, and offers a seductive argument for the reconsideration and reclamation of this age-old building material.


Periodical
Telecombrief : nieuwsbrief voor de informatie- en communicatie-branche
ISSN: 15668118 Year: 1980 Publisher: Hilversum Amsterdam Broadcast Press. VNU business publications.

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Book
Gebeden voor elke dag : Lezingen en gebeden door het jaar
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ISBN: 9025708307 Year: 1970 Publisher: [plaats van uitgave onbekend] Desclée De Brouwer / J.H. Gottmer

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Periodical
Het houtblad
Authors: ---
ISSN: 09235574 Year: 1988 Publisher: Doetinchem Deventer Eisma MYBusinessmedia

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Book
Handleiding voor de keuze van voegkitten
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ISBN: 9020111418 Year: 1979 Volume: vol 67 Publisher: Deurne Kluwer

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Dissertation
Interactions between cement and combined concrete admixtures : the influence on cement paste rheology
Authors: ---
ISBN: 9789460188589 Year: 2014 Publisher: Leuven Katholieke Universiteit Leuven

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During the last decades, innovative concrete applications have been the result of technological developments as new processing techniques, the use of concrete admixtures and advanced materials. All these improvements increase the demand for better performing concrete with enhanced workability. However, the lack of reliable engineering tools in traditional concrete production methods has led to some inconsistent control of the workability. Therefore, todays research is increasingly investigating advanced models that capture the flow behavior of fresh concrete as accurately as possible. These models are continuously improving but generally keep facing problems which are linked to the agglomeration of the cement particles and to the implementation of combined concrete admixtures. The objective of this work is to investigate the rheological mechanism in cement paste for the combined use of superplasticizer, retarder and accelerator. In particular, an effect on the particle agglomeration is aimed for in order to contribute to a more fundamental understanding of the concretes flow behavior. Concerning the superplasticizer impact on cement paste, thermodynamic modelling and mineralogy studies led to the conclusion that the superplasticizer can change the hydrate morphology to such an extent that the interparticle contact forces are modified. The extra addition of retarder led to a densified polymer layer at the cement grain surface which contributed to the steric stabilization of the cement paste. An additional electrostatic effect and the induced changes in hydrate morphology are also demonstrated to contribute to the low paste viscosity. With the extra addition of a calcium salt accelerator to the cement paste, an interstitial structure was assumed to diminish the rheological effect of the polymer layer.All the developed conceptual mechanisms were implemented in a coherent agglomeration model, based on measurable parameters. In this model, the internal and external hydrates in a cement agglomerate were defined and quantified. Generally, the cumulative amount of hydrates within the agglomerates influenced the agglomerate stability and the amount of external hydrates determined the reagglomeration rate. For the superplasticizer only, a proportional relation was found between the change in agglomeration rate and the external agglomerate connectivity while, for the extra addition of retarder and accelerator, a reverse relation was found. The latter was attributed to a mechanical contribution of the interstitial volume. On the one hand, the retarder creates a source of slowly hydrating nuclei and particles in that volume and, on the other hand, these particles are expected to coagulate due to the accelerator addition. In the second case, the interstitial volume also delivered a contribution to the stress resistance of the cement paste at rest.This fundamental research combines dedicated analytical methods and conceptual models to improve the understanding of particle agglomeration and contributes to a more extensive insight into the concrete rheology.


Book
Structural detailing in steel : a comparitive study of British, European and American codes and practices.
Author:
ISBN: 0727728504 Year: 2000 Publisher: London Telford

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Book
Cement-data-book. 2 : Elektrotechnik, Automation, Lagerung, Transport, Versand
Author:
ISBN: 3762520429 9783762520429 Year: 1984 Publisher: Wiesbaden Bauverlag

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