https://www.iiste.org/Journals/index.php/CER/issue/feedCivil and Environmental Research2024-02-16T01:56:27+00:00Alexander Deckeradmin@iiste.orgOpen Journal Systems<p><span id="internal-source-marker_0.04939836589619517">The Journal of Civil and Environmental Research <span id="internal-source-marker_0.04939836589619517">is a peer reviewed journal published by IISTE. The journal publishes original papers at the forefront of civil and environmental research. The journal is published in both printed and online versions. The online version is free access and download.</span></span></p><p>IISTE is a member of <a href="http://www.crossref.org/01company/17crossref_members.html">CrossRef</a>.</p><p>The DOI of the journal is: https://doi.org/10.7176/CER</p>https://www.iiste.org/Journals/index.php/CER/article/view/61950Journal coverpage2024-02-16T01:56:27+00:00Journal Editord@d.comJournal coverpagehttps://www.iiste.org/Journals/index.php/CER/article/view/61951A Comprehensive Review on Gypsisols: Characteristics, Genesis, and Environmental Implications2024-02-16T01:56:27+00:00Asmamaw Ketema Gizawd@d.com<p>Gypsisols, a distinct soil order recognized by the presence of gypsum as a primary soil-forming mineral, play a crucial role in shaping terrestrial ecosystems and influencing environmental processes. This research review provides a comprehensive examination of Gypsisols, encompassing their key characteristics, genesis, and the broader environmental implications associated with their presence. The paper delves into the unique physicochemical properties of Gypsisols, exploring the impact of gypsum on soil structure, fertility, and water retention. The genesis of Gypsisols is explored, considering factors such as climate, parent material, and biological processes that contribute to the formation of these specialized soils. Additionally, the review investigates the distribution of Gypsisols globally, highlighting regions where they are prevalent and the ecological significance of their presence.</p> <p><strong>Keywords:</strong><em> </em>Gypsisols, Genesis, Characteristics, Distribution <em></em></p> <p><strong>DOI:</strong> 10.7176/CER/16-1-01</p> <p><strong>Publication date: </strong>January 31<sup>st</sup> 2024</p>https://www.iiste.org/Journals/index.php/CER/article/view/61952Effects of Mechanical Stabilization on Expansive Soil using Ambo Sand Stone as Subgrade Material2024-02-16T01:56:27+00:00Jemal Aliy Gobenad@d.com<p>Expansive soil is a clay soil that changes its volume depending on the seasonal variation of the moisture. These types of soil create serious problems to the civil engineering structures. To improve this different researchers found different method, among this mechanical stabilization using locally available materials are the one. Therefore these study was done on the stabilizing the expansive properties of soil of Ambo city by locally available material.To perform this study soil was taken from five (5) pits, on 15km under construction road in Ambo city and Ambo sand stone from Sankale Faris. This study was done by mechanically mixing the ambo sand stone with expansive soil by percent. The mix ratio was prepared by 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% for ambo sandstone of mass of soil and the engineering properties of pure expansive soil and mixed soil with sand stone were done accordingly.The lab result indicates that as sand stone increases in the mixes, the liquid limits, plastic limits, shrinkage and free swell of treated soil decreases, the CBR increases. The UCS increase as the sand stone percentage increases to 60% and then decreases. Hence, the addition of this stabilizer decreases the plasticity properties of the treated soil. Therefore, the optimum mix ratio was attained at 60% ambo sand stone to stabilize the soil. The mixes of ambo sandstone changes the geotechnical properties of the natural soil and makes this soil to be suitable for subgrade construction.</p> <p><strong>Keywords: </strong>Geotechnical properties, Sand Stone, Stabilization, Subgrade, Swelling</p> <p><strong>DOI:</strong> 10.7176/CER/16-1-02</p> <p><strong>Publication date: </strong>January 31<sup>st</sup> 2024</p> <p> </p>https://www.iiste.org/Journals/index.php/CER/article/view/61953An Assessment of Planning and Project Management Processes under the Zongo and Inner-Cities Regeneration Programme in Ghana2024-02-16T01:56:27+00:00Sam C. M. Oforid@d.com<p>Urban regeneration faces both conceptual and process challenges. Conceptually, it tends to have a variety of definitions and meanings. However, while urban regeneration, which is basically the comprehensive improvement of degenerated and declined built environments, urban renewal is only a physical form of it and, itself, has several sub-modes, including slum upgrading. In practice, however, there tends to be a mix of all these by different actors, which are portrayed in the ZICRDP. Similarly, various attempts have been made to develop procedural process models for explaining, assessing and undertaking urban regeneration and renewal transformation processes. Three of these were reviewed but none was considered adequate, independently, for assessing and explaining urban regeneration and renewal interventions. An alternative approach, which combined procedural planning processes - preparation for the intervention, problem identification, statement of objectives, data management, strategy generation, policy formulation, plan design, implementation, monitoring and evaluation - and experiential learning theory was, therefore, developed for the purpose. The former was useful in assessing the various stages of the urban regeneration process, including elements of project management, the latter addressed more of the emotional, relational and knowledge development experiences of participants and stakeholders as well as future programme performance.</p> <p><strong>Keywords: </strong>urban regeneration and renewal, slum upgrading, procedural planning process, project management processes, experiential learning theory, Zongo and inner-city communities, inclusive participation</p> <p><strong>DOI:</strong> 10.7176/CER/16-1-03</p> <p><strong>Publication date: </strong>January 31<sup>st</sup> 2024</p>https://www.iiste.org/Journals/index.php/CER/article/view/61954Urban Slum Upgrading as a Form of Regeneration in Developing Countries: Zongo and Inner-City Communities in Ghana2024-02-16T01:56:27+00:00Sam C. M. Oforid@d.com<p>Urban regeneration tends to mean different things to different people, everywhere. Particularly in the developing countries, holistic urban regeneration tends to be mixed up with its, generally, physical form, urban renewal, and its own sub-modes, including slum upgrading. These portray in Ghana’s Zongo and Inner-Cities Regeneration Programme, initiated in 2017, especially for reasons of political economy, politics, financing, institutional, and character of urban degeneration. However, since, significant achievements have been made in terms of physical, environmental, economic, social and cultural transformation. Such progress as well as challenges encountered hold implications for future project implementation. The latter includes inadequate funding and personnel, political interference, lacking scale-up, limited programme coverage, ineffective community management structures, constrained project planning, other institutional and governance issues. Suggestions are made for the amelioration of these, focused on adequate funding, institutional reforms, a proactive and settlement/spatial planning approach, and introduction of Zongo Community Development Committees.</p> <p><strong>Keywords: </strong>Urban regeneration, urban renewal, slum upgrading impacts, Zongo and Inner-City Regeneration and Development Programme, urban policy, institutional contexts, urban sustainability<strong></strong></p> <p><strong>DOI:</strong> 10.7176/CER/16-1-04</p> <p><strong>Publication date: </strong>January 31<sup>st</sup> 2024</p>