Print Email Facebook Twitter Particulate structure and microstructure evolution of concrete investigated by DEM: Part 2: Porosimetry in hydrating binders Title Particulate structure and microstructure evolution of concrete investigated by DEM: Part 2: Porosimetry in hydrating binders Author Huan He, H. Le, N.L.B. Stroeven, P. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2012-07-30 Abstract Durability of concrete in engineering structures is becoming more and more of a major problem. Research into such problems is complicated and expensive, however. Developments in computer technology make it possible nowadays realistically simulating cementitious materials and studying its pore network structure. In this paper use is made of the dynamic DEM (Discrete Element Method) denoted HADES (Habanera’s Discrete Element Simulator), introduced earlier, and a new vector-based hydration simulation system, XIPKM (Extended Integrated Particle Kinetics Model). Inspired by developments in robotics, a pore exploration system is developed in DraMuTS (Double Random Multiple-Tree Structuring). The tree structure inside pores governs pore topology, including pore continuity. For determination of pore geometry such as pore size, a second uniform random point system is used. In each of these points, star volume measurements govern local pore size, while the collected data allow constructing a volume-based pore size distribution. The method is illustrated by means of data pertaining to Portland cement (PC) paste and rice husk ash-blended PC. This approach is demonstrated providing all necessary pore network information relevant for durability estimation. Subject concretecementDEMhydration simulationpore connectivitypore size distributionblended cement To reference this document use: http://resolver.tudelft.nl/uuid:071014bf-c901-4f57-b136-2e5ba085d724 Publisher Heron ISSN 0046-7316 Source Heron, 57 (2012) 2 Part of collection Institutional Repository Document type journal article Rights (c) 2012 He, H.Le, N.L.B.Stroeven, P. Files PDF Particulate_structure_and ... part_2.pdf 1.3 MB Close viewer /islandora/object/uuid:071014bf-c901-4f57-b136-2e5ba085d724/datastream/OBJ/view