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Abdulmajid, S A D (1967) Resource forecasting models for private housing projects, Unpublished PhD Thesis, , The University of Manchester.
Adams, C D (1995) Procurement of microtunnelling projects, Unpublished PhD Thesis, , The University of Manchester.
Adul-Hamid, R (1996) Construction duration prediction using neural network methodology, Unpublished PhD Thesis, , The University of Manchester.
Coram, W R (1997) The privatisaton of the property services agency, Unpublished PhD Thesis, , The University of Manchester.
Eldosoky, A I (1987) Dealing with uncertainty in construction projects with particular reference to Egypt, Unpublished PhD Thesis, , The University of Manchester.
Fenn, F P (1999) An aetiology of construction disputes, Unpublished PhD Thesis, , The University of Manchester.
Holden, S L (2021) Land, materials, and construction site: Decommodification through alternative construction, Unpublished PhD Thesis, , The University of Manchester.
Inyang, E D (1983) Some aspects of risk analysis for decision making in engineering projects management, Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Luo, J (1998) The transitional construction industry and sino-foreign construction joint ventures in the p.R. Of China, Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Luo, J and Gale, A (1998) The transitional construction industry and sino-foreign construction joint ventures in the p. R. Of China, Unpublished PhD Thesis, , The University of Manchester.
Merna, T (2004) Assessing methods to analyse portfolios of projects and their risks procured by project finance, Unpublished PhD Thesis, , The University of Manchester.
Mohamed Sultan, A A B (2019) Decision tools for recycling with a focus on fibre reinforced composites, Unpublished PhD Thesis, , The University of Manchester.
- Type: Thesis
- Keywords: complexity; ownership; security; sustainability; landfill; circular economy; integration; legislation; lifecycle; manufacturing; recycling; regulation; reuse; UK; owner; stakeholder; critical success factor
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/2409727352
- Abstract:
A circular economy is an approach to sustain a product value and functions by increasing the lifecycle of products by performing material efficiency engagements such as reuse, remanufacture and recycle wherever feasible. With the rapid growth of composite use in the UK industrial composite sectors, it is important for related companies to adopt the circular economy approach and to manage both manufacturing and end-of-life waste for better sustainability. The current disposal practice is that 98% of composite waste is disposed of in landfill. With the upsurge of waste legislation by both local and international governing bodies, industrial players have to consider recycling. A crucial issue prior to recycling is the separation of components of materials that make up product assemblies. A particular interest for this research is products that contain composite materials. From literature which builds on the Sherwood plot, existing mathematical models for product complexity are based on the mass fraction of constituent materials. This measure was adapted by previous researchers to predict "what gets recycled". However, the research argument is that this measure could be improved by considering the environmental and technological incentive to recycle materials. In this PhD, the material security and recycling technology readiness level were modelled into an integrated measure. The research realises that it is not only product complexity that hinders recycling and that the system and incentives for a circular economy need to be reconsidered. The second part of this research developed decision tools for composite recycling taking into account the waste supply chain, location and other significant factors. The critical success factors of the circular economy such as drivers, sustainers, barriers and waste ownership have also been determined. A questionnaire approach was used to investigate this aspect while the centre of gravity method and weighted sum method were utilised as a scientific approach to propose an alternative location for recycling centres. Hence, the associated reverse supply chain complexity was assessed. An appropriate technique was suggested to reduce the overall distribution network complexity. From the first analysis, an apparent recycling desirability boundary enabling products to be prioritised for recycling was developed. This model and analysis can be used as an information source in developing policies and product recycling priorities. The second part results indicated that the drivers and sustainers for composite recycling were primarily rooted in an obligation to comply with the rules and regulation of environmental protection that are enforced. The end-user was identified to be the best for managing the composite end-of-life waste. New mathematical models were developed that allow strategic placement of recycling centres near to waste resources by minimising the complexity of waste collection while enabling the shortest total driving distance with the lowest total greenhouse gas emission. Moreover, the capacity of the recycling centre is programmed in as constraint to be met. Collectively, the entire findings from this study have brought together considerations on products recycling desirability and complexity of composite reverse supply chain, into a comprehensive and updated assessment. The vision is that the knowledge integration between new models will guide the stakeholders towards the enhancement of the sustainable use of engineered products including composites. In the absence of such approach, the world cannot truly culminate in shaping a better circular economy practices.
Ng, S-t T (1996) Case-based reasoning decision support for contractor prequalification, Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Nosair, I A R (1987) The relevance of computerised modelling techniques to construction management problems and training in Egypt, Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Nour, H A (2003) An information approach for enhancing the health and safety file, Unpublished PhD Thesis, , The University of Manchester.
Parvar, J (2003) Neural networks decision support system (decision to bid), Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Peacock, W S (1990) Site investigation procedures and risk analysis, Unpublished PhD Thesis, , The University of Manchester.
Samo, S R (1999) Energy conservation in UK housing and the effect of building regulations, Unpublished PhD Thesis, , The University of Manchester (United Kingdom).
Sansone, R (2020) Latent matters: Megaprojects and political imaginaries in post-revolution Tunis, Unpublished PhD Thesis, , The University of Manchester.
Shakeri, E (2002) An investigation of privately promoted infrastructure (ppi) strategy in developing countries: Public-private partnership (ppp) approach, Unpublished PhD Thesis, , The University of Manchester.
Sigonda, G G G (2000) The impact of infrastructural projects on the environment in Tanzania: The case of mindu dam, Unpublished PhD Thesis, , The University of Manchester.
Suraji, A (2001) Development and validation of a theory of construction accident causation, Unpublished PhD Thesis, , The University of Manchester.
Tipple, C (1993) An analysis of the development of the construction industry since the 18th century, Unpublished PhD Thesis, , The University of Manchester.
Wearne, S H (1969) Organization of large engineering design departments, Unpublished PhD Thesis, , The University of Manchester.
Yeo, K T (1982) A systems approach to cost management of large scale offshore oil projects, Unpublished PhD Thesis, , The University of Manchester.