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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Particle Packing-Based Material Design Methodology for Pervious Concretes
Author(s): Milani S. Sumanasooriya, Omkar Deo, and Narayanan Neithalath
Publication: Materials Journal
Appears on pages(s): 205-214
Keywords: material design; particle packing; pervious concrete; porosity.
Abstract:This paper presents a rational methodology based on particle packing concepts for the material design of pervious concretes. The virtual packing densities of the components of the mixture, the actual packing density of the mixture, and the corresponding volume fractions are used to determine a compaction index. To achieve the design porosity, adjustments to the material volume fractions and/or the compaction effort are required when only a hypothetical minimum paste volume fraction is used. These adjustments result in two distinct means of proportioning pervious concretes—one where extra paste volume is added and the other in which a combination of a small increase in paste volume and additional compaction effort is used to achieve the design porosity. The compaction index is shown to be related to the porosity and the compaction energy. These relationships facilitate the development of iso-compaction energy curves. The compaction index-porosity relationship for a certain applied compaction energy is shown to be a powerful material design tool for pervious concretes. The designed and actual (fresh and hardened) porosities are found to be fairly close to each other. The influence of these proportioning methodologies on the hardened state properties (compressive strength and permeability) is also discussed.
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