Research Journal of The University of Zagreb, Faculty of Civil Engineering

Organization, Technology & Management in Construction: An International Journal
ISSN 1847-5450 print / ISSN 1847-6228 online
udc 62:658(05)

Abstracting/Indexing: The papers published in Organization, Technology & Management in Construction: An international Journal are abstracted/indexed by: EBSCO, INSPEC, ProQuest Science Journals

| About journal | Editorial board | Information for authors | Journal volumes



<<Table of Content

3. Vivian Wong, Ka Wai Chan, Albert Kwok Hung Kwan

Applying Theories of Particle Packing and Rheology to Concrete for Sustainable Development


Concrete is one of the most important construction materials. However, it is not so compatible with the demands of sustainable development because manufacturing of cement generates a large amount of carbon dioxide and therefore cement consumption produces a huge carbon footprint. Currently, the cement consumption is generally lowered by adding supplementary cementitious materials to replace part of the cement. Nonetheless, in order to maintain performance, there is a limit to such cement replacement by supplementary cementitious materials. To further reduce the cement consumption, the total cementitious materials content has to be reduced. This requires the packing density of the aggregate particles to be maximized so that the amount of voids in the bulk volume of aggregate to be filled with cement paste could be minimized and the surface area of the aggregate particles to be minimized so that the amount of cement paste needed to form paste films coating the surfaces of aggregate particle for rheological performance could be minimized. Such optimization is not straightforward and modern concrete science based on particuology is needed. Herein, a number of new theories regarding particle packing and rheology of concrete, which are transforming conventional concrete technology into modern concrete science, are presented. These theories would help to develop a more scientific and systematic concrete mix design method for the production of high-performance concrete with minimum cement consumption.