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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.
171

Fibre and filler reinforcement of polymers and other materials

Heaton, M. D. January 1968 (has links)
No description available.
172

A study of the interface/interphase in carbon fibre epoxy composites

Atkinson, Kirsten Elizabeth January 1996 (has links)
No description available.
173

Multiaxial testing of fibre reinforced composite materials

Choo, V. K. S. January 1982 (has links)
No description available.
174

Computer simulation of stress wave propagation in composite laminates

Herne, Nicholas January 1990 (has links)
No description available.
175

Assessment of insitu concrete strength

Bungey, J. H. January 1984 (has links)
No description available.
176

Properties and applications of fresh fibre reinforced concrete

Manarakis, George S. January 1992 (has links)
Concrete is possibly the most widely used man-made construction material in the world. Low cost, versatility and adequate compressive strengths are reasons for the popularity of concrete construction. In the present investigation various properties of polyproplene and steel fibre reinforced cementitious composites in their plastic state, which influence slipforming (Chapter 3), such as early age shrinkage (Chapters 4, 5) and uniaxial tensile strength (Chapter 6) are investigated, while properties of the same mixes in their hardened state such as compressive and tensile splitting strength are also determined (Chapter 9). Three new experimental apparatae were developed during this investigation - one for the determination of the tensile stress-strain curve of fresh concrete (Chapter 6) and two for the investigation of early age shrinkage cracking of fresh concrete (Chapter 7). Theoretical aspects relating to the obtained experimental results were also considered (Chapters 6, 8). The experimental data was analysed by a digital computer with the aid of five FORTAN 77 computer programmes which were written by the author specifically for this purpose (Chapter 10).
177

Cement compatible materials with potential application in the immobilisation of toxic wastes

Smith, McDonald William January 1997 (has links)
Cements and cement-based systems have excellent potential as immobilising matrices for toxic inorganic wastes. This potential is a result of the unique chemical and physical mechanisms which operate on particular waste species to prevent their release into ground waters. These mechanisms are reviewed in this thesis. Some wastes are suitable for direct cementing, such as waste streams form nuclear fuel reprocessing, where cement technology is applied. Other wastes are less well characterised and may be unsuitable for direct cementing. This often arises because waste species concentrations are higher than maximum permissable levels, but are still too dilute for economical cementing. In such cases, a preconcentration step prior to cementing is the favoured strategy. Arsenic and lead wastes present an additional challenge because they are expected to exist as soluble oxyanions under alkaline pore fluid conditions. Both arsenic and lead have also been shown to affect setting characteristics by interfering with normal cement hydration reactions. The materials studied in this thesis were chosen because of their known, or suspected, potential as anion exchangers. It may be possible to preconcentrate arsenic or lead in the anion exchanging solid before incorporation into cement. A further advantage of this method is that an additional barrier against re-release of the toxic species is created. The aim of this project was to determine the uptake capacity of different ion exchanging materials which are compatible with cement systems for hazardous oxyanion species. Three types of material were studied, hydrotalcite (a clay mineral), thaumastic (a phase which is isostructural to ettringite) and phosphate-modified zeolites (a new type of material derived from zeolites). The first two are known to occur in cements, the last is rather an unknown quantity, but many zeolites have been shown to be compatible with cement environments.
178

Composite modification by preformed polymer particles

Winchester, Stuart January 1998 (has links)
No description available.
179

The mechanical properties of a pulverised fuel ash blended cement paste

Chanda, S. January 1985 (has links)
No description available.
180

The effect of an oxidative surface treatment on the adhesion of carbon fibres in and epoxy resin matrix

Baillie, Caroline A. January 1991 (has links)
No description available.

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