Thesis (M.S.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains xii, 73 p. : ill. (some col.), map (some col.). Vita. Includes abstract. Includes bibliographical references.

Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 426-447) and index.

Thesis (M. Sc.)--University of Hong Kong, 2001. / Includes bibliographical references.

Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains viii, 91 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 79-82).

Thesis (M.U.D.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 63-65).

Although Texas is a water reclamation leader in the country for quantity of water reclaimed, it falls behind both California and Florida in residential applications. The concept of residential reuse has some barriers to overcome prior to implementation on a broad scale in Texas. The two case studies, St. Petersburg, Florida, and the El Dorado Irrigation District of El Dorado County, California, describe extensive reuse programs in response not only to impending water shortages but also to effluent disposal limitation requirements. Major factors that limit residential reuse in Texas include the following: cost, expediency and negative public perception. Two other considerations exist when determining the feasibility of implementing residential reuse: income level and irrigation needs. Most of the successful reuse programs examined were for higher income areas. Also, irrigation expectations and needs of the residences play a major factor in the success of the program. In arid environments planted with drought-tolerant plants, landscape irrigation becomes less of a priority. Further limitations that specifically affect Texas’ expanding its water reclamation programs include the legal issues of existing water rights and direct versus indirect reuse. / text

The remediation industry has grown exponentially in recent decades. International organizations of practitioners and remediation experts have developed several frameworks for integrating sustainability into remediation projects; however, there is no accepted definition or universal framework for sustainable remediation. Literature on sustainable remediation is only recently beginning to emerge, and there has been limited attention to how sustainability is best-integrated and operationalized in sustainable remediation frameworks and practices – or whether sustainability plays any meaningful role at all in sustainable remediation. This thesis examines the role of ‘sustainability’ in recently emerging sustainable remediation frameworks. More specifically, it presents the results of an analysis of how sustainability is defined, integrated and operationalized in sustainable remediation frameworks. Methods are based on a review of a sample of six leading remediation frameworks against a set of normative principles and criteria for sustainability integration adapted from sustainability assessments. Recommendations are made for improving the integration of sustainability in sustainable remediation frameworks, and how to better operationalize sustainability practices.

published_or_final_version / Chinese / Master / Master of Philosophy

No description available.

The thesis deals with the study of soil composites that are constructed by combining regions of soft clay and granular materials in various spatial configurations. The underlying basis for the work stems from the practical application of the results of the research to offshore land reclamation practices. Due to depletion of local coarse-grained soil sources and the high cost of imported granular fill, the use of dredged and excavated marine clay has become the preferred source of materials in reclamation activities. A common reclamation technique involves placing dredged clay lumps directly on top of other layers; these lumpy fills contain large initial inter-lump voids with the result that the fills experience substantial compression purely due to the closure of the void space. A practical solution therefore is to fill the void space with a granular soil to enhance the load-carrying capacity and to minimize the settlements of the reclaimed fills. / In this research a coordinated experimental investigation was undertaken to examine the consolidation behavior of composites fabricated using a number of spherical and disk-shaped clay inclusions placed within an artificial granular medium (ballotini). The results of this experimental research program indicated that the volume fraction, shape, configuration and the constitutive properties of both the clay inclusions and the granular component are all important factors that could affect the mechanical response of the soil composites. A computational scheme, validated using the results of the bench-scale experiments, was used to analyze the response of an idealized composite lumpy fill subjected to self-weight stresses, surcharge and a load applied through a rigid footing. The computational results indicated that the consolidation behavior of the composite lumpy layers can be significantly influenced by the volume proportion, location and configuration of the clay inclusions interspersed within the granular fill. The incorporation of the constitutive behaviors of the soil components, used in reclamation activities, into such a computational analysis could assist engineers in designing reclaimed fills where the least ultimate settlement occurs within the shortest time.