Sökning: "Tensile strength"
Visar resultat 21 - 25 av 439 avhandlingar innehållade orden Tensile strength.
21. Evaluation of concrete structures : strength development and fatigue capacity
Sammanfattning : This licentiate thesis consists of four papers. In paper A the development of tensile and compression strength are presented for old concrete railway trough bridges. The compression strength has usually increased 50 to 100% over the years. However the same could not be said for the tensile strength. LÄS MER
22. Mechanical strength of pharmaceutical compacts : Importance of material characteristics, particle characteristics and compaction pressure on interparticulate bonding structure
Sammanfattning : Factors considered important for the interparticulate bonding structure and mechanical strength of pharmaceutical compacts were studied in this thesis.Fractures appear to propagate mainly around rather than through grains during strength testing. LÄS MER
23. Characterization of Spruce Xylan and Its Potential for Strength Improvement
Sammanfattning : Xylan dissolved during kraft cooking and later redeposited on fibre surfaces has been shown to give higher pulp yield and better strength properties. This is economically interesting from an industrial point of view. LÄS MER
24. Biobased and biodegradable binders for paper and nonwoven
Sammanfattning : Nonwovens are textile-like materials with similarities close to paper. One significant sector where nonwovens are used is for single-use products such as wet wipes and hygiene products. With an increasing global population, the manufacturing and use of nonwovens have grown significantly. LÄS MER
25. Time dependent material properties of shotcrete for hard rock tunnelling
Sammanfattning : In this thesis different mechanical properties for shotcrete (sprayed concrete) such as compression strength, bond strength, bending tensile strength, elastic modulus, free and restrained shrinkage as a function of its age was investigated. One of the main issues was to investigate the difference between ordinary cast concrete and shotcrete. LÄS MER