Title : SUSTAINABLE CONCRETE STRUCTURES THROUGH SERVICE LIFE DESIGN AND ECO EFFICIENT CONCRETES
Authors : H. S. Müller, J. Moffatt, M. Haist and M. Vogel
Publication : 8 - 10, October 2015
Volume : 2
Pages :
Price : 250
Abstract : Green concretes with reduced cement content may provide analternative for improving concrete sustainability independent of supplementary cementitous materials. For this purposecement-reduced, green concrete is developed by a design process centered on packing optimization of the granular mix constituents, thereby reducing the cement content by nearly two-thirds. The performance in compressive strength and durability concerning carbonation are investigated and a probabilistic service life prediction is performed.As the concrete sustainability is difficult to evaluate during mix design, a sustainability potential indicator, the Building Material Sustainability Potential (BMSP), is proposed and evaluated for cementreduced and normal concrete mixtures.The results of the experimental investigations and service life calculations are used to compare the sustainability potential of the green concretes against normal concretebymeans of the BMSP. Results indicate that cement-reduced concrete may still be acceptable depending on exposure condition, although its durability characteristics arestill inferior to those of normal concrete. Combined with a significant reduction in environmental impact and superior performance, cement-reduced concretes yielda better sustainability potential when judged by the proposed indicator BMSP.