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      USING DURABILITY TO ENHANCE CONCRETE SUSTAINABILITY

      1 , 2

      Journal of Green Building

      College Publishing

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          INTRODUCTION

          The sustainability of concrete buildings and infrastructure must be considered both in terms of its benefits to society and the environmental impact associated with its use in construction. Production of Portland cement (PC), in particular, is energy intensive and generates a significant amount of carbon dioxide. Cement is, however, only a relatively small component of concrete and overall the material is resource efficient and has moderate embodied energy and carbon dioxide footprint. Concrete is widely used due to its low cost, ease of use, good track record, versatility, local availability, thermal benefits, acoustic dampening, and durability.

          Durability performance of construction materials is important, and concrete is often considered to be inherently durable due to its chemical and physical resistance to various environments and dimensional stability. Concrete structures are assumed to be largely maintenance-free and to provide long service lives. Figure 1 shows an 80-yearold concrete bridge in South Africa that is still providing good performance under severe weather conditions. This assumption is not true in all environments and service conditions unless special attention is given to ensuring a high level of durability performance.

          With an understanding of concrete microstructure and potential deterioration mechanisms, it is possible to engineer almost any level of durability performance. Increasing the service life of buildings and infrastructure through improved durability has clear advantages in terms of optimizing resources and reducing waste, thus enhancing efficiency. Other advantages associated with improved durability that enhance the sustainability of concrete include improved structural performance, reduced labour, and improved understanding of concrete materials, which will assist in development of new technologies.

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          Most cited references 23

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          Concrete:The advanced industrial material of the 21st century

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            “Final report of RILEM TC 205-DSC: durability of self-compacting concrete”

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              “Fiber reinforced concrete for sustainable and intelligent infrastructure.”

               N. BANTHIA (2008)
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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Summer 2009
                : 4
                : 3
                : 52-60
                Author notes

                1Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand, james.mackechnie@ 123456canterbury.ac.nz .

                2Department of Civil Engineering, University of Cape Town, Cape Town, South Africa, mark.alexander@ 123456uct.ac.za .

                Article
                jgb.4.3.52
                10.3992/jgb.4.3.52
                ©2009 by College Publishing. All rights reserved.

                Volumes 1-7 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                Page count
                Pages: 9
                Product
                Categories
                INDUSTRY CORNER

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