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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An Alkali Activated Binder for High Chemical Resistant Self-Leveling Mortar

Funke, Henrik L., Gelbrich, Sandra, Kroll, Lothar 13 October 2016 (has links) (PDF)
This paper reports the development of an Alkali Activated Binder (AAB) with an emphasis on the performance and the durability of the AAB-matrix. For the development of the matrix, the reactive components granulated slag and coal fly ash were used, which were alkali activated with a mixture of sodium hydroxide (2 - 10 mol/l) and aqueous sodium silicate solution (SiO2/Na2O molar ratio: 2.1) at ambient temperature. A sodium hydroxide concentration of 5.5 mol/l revealed the best compromise between setting time and mechanical strengths of the AAB. With this sodium hydroxide concentration, the compressive and the 3-point bending tensile strength of the hardened AAB were 53.4 and 5.5 MPa respectively after 14 days. As a result of the investigation of the acid resistance, the AAB-matrix showed a very high acid resistance in comparison to ordinary Portland cement concrete. In addition, the AAB had a high frost resistance, which had been validated by the capillary suction, internal damage and freeze thaw test with a relative dynamic E-Modulus of 93% and a total amount of scaled material of 30 g/m2 after 28 freeze-thaw cycles (exposure class: XF3).
2

Application of the Submodeling Technique for Analyzing Air Springs in Abaqus

Heinrich, Nina, Ihlemann, Jörn 02 July 2018 (has links)
Es wird ein auf der Submodelltechnik basierender Ansatz vorgestellt, mit dem Cord-Elastomer-Verbunde, speziell die Balgwände von Luftfedern, einer detaillierten FE-Analyse zugänglich gemacht werden können. Dieser Ansatz beinhaltet ein Globalmodell, das die gesamte Luftfeder abbildet, und zwei Submodelle, die sich auf bestimmte Ausschnitte der Balgwand konzentrieren.
3

TU-Spektrum 1/2009, Magazin der Technischen Universität Chemnitz

Steinebach, Mario, Thehos, Katharina, Häckel-Riffler, Christine, Stromer, Anett, Chlebusch, Michael, Linne, Carina, Leithold, Nicole, Keller, Julia, Michael, Anett 07 April 2009 (has links) (PDF)
dreimal im Jahr erscheinende Zeitschrift über aktuelle Themen der TU Chemnitz
4

TU-Spektrum 1/2009, Magazin der Technischen Universität Chemnitz

Steinebach, Mario, Thehos, Katharina, Häckel-Riffler, Christine, Stromer, Anett, Chlebusch, Michael, Linne, Carina, Leithold, Nicole, Keller, Julia, Michael, Anett 07 April 2009 (has links)
dreimal im Jahr erscheinende Zeitschrift über aktuelle Themen der TU Chemnitz
5

An Alkali Activated Binder for High Chemical Resistant Self-Leveling Mortar

Funke, Henrik L., Gelbrich, Sandra, Kroll, Lothar 13 October 2016 (has links)
This paper reports the development of an Alkali Activated Binder (AAB) with an emphasis on the performance and the durability of the AAB-matrix. For the development of the matrix, the reactive components granulated slag and coal fly ash were used, which were alkali activated with a mixture of sodium hydroxide (2 - 10 mol/l) and aqueous sodium silicate solution (SiO2/Na2O molar ratio: 2.1) at ambient temperature. A sodium hydroxide concentration of 5.5 mol/l revealed the best compromise between setting time and mechanical strengths of the AAB. With this sodium hydroxide concentration, the compressive and the 3-point bending tensile strength of the hardened AAB were 53.4 and 5.5 MPa respectively after 14 days. As a result of the investigation of the acid resistance, the AAB-matrix showed a very high acid resistance in comparison to ordinary Portland cement concrete. In addition, the AAB had a high frost resistance, which had been validated by the capillary suction, internal damage and freeze thaw test with a relative dynamic E-Modulus of 93% and a total amount of scaled material of 30 g/m2 after 28 freeze-thaw cycles (exposure class: XF3).

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