Introduction: The natural environment is the term that includes all living and non-living things that occur naturally on the earth or on some parts of it. The natural environment contrasts with the built environment which includes areas and components that are strongly influenced by humans and their activities. Environmental problems arise when development has an unduly negative impact on the natural environment by depleting natural resources or destroying the ecological system. Over the past twenty years, numerous environmental regulations have been developed to protect the environment for future generations and serve as guidelines to assist developers in implementing environmental management plans. Environmental regulations have become very important and almost no civil engineering project is complete without being affected by these regulations. In the construction industry, a lot of emphasis has been placed on environmental conservation. In the not too recent past, large construction projects were started without undertaking environmental impact studies. Nowadays it is a legislative requirement that a proper Environmental Impact Assessment (EIA) and Environmental Management Plan (EMP) must be completed and approved before any construction work can begin. The growing importance of sustaining the natural environment is one of the biggest challenges facing design and construction engineers today. Whether considering the design of a dam retaining wall, bridge, or building, all elements require the use of concrete in some process. Below is a description of the environmental impacts of producing and using cement and methods to reduce these impacts. Environmental impact due to the production of...... paper medium ...... and Jesuits in Communication www. ecojesuit.com/looking-at-the-global-and-local-again/1206/ (Accessed 14 April 2014)• Errol van Amsterdam (2003), Building materials for civil engineering.• Lafarge. The production of extended cements and the impact on the durability of concrete. www.lafarge.co.za/wps/portal/za/2-Cement (accessed 14 April 2014)• Mahasenan, N., Smith, S., Humphreys, K., Kaya, Y. (2003). The cement industry and global climate change: Current and potential future CO2 emissions from the cement industry. • Shah, S., Wang, K. (2004). Development of "green" cement for sustainable concrete using cement kiln dust and fly ash. • In Proceedings of the International Workshop on Sustainable Development and Concrete Technology, Beijing, China, May 20-21, 2004. Edited by Kejin Wang. Ames, IA: Center for Transportation Research and Education, Iowa State University
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