Abstract
In this paper a mix design methodology for Lightweight Aggregate Self-Compacting Concrete (LWASCC) is presented based on the packing density theory. The proposed methodology targets: (i) the minimization of the voids volume associated to the packing of the coarse aggregate fractions (4–16 mm); (ii) the maximization of the packing density of the cementitious materials in the paste; (iii) the minimization of the water-to-cementitious materials volumetric ratio (V w /V cm ) in the mortar; and (iv) the optimization of the measurable workability features of the produced LWASCC mixtures. Points (ii) and (iii) are achieved using the “wet packing method” in the cementitious paste and mortar phases, along with standard consistency tests (mini slump-flow for the cementitious paste; mini slump-flow and mini V-funnel for the mortar). The final mixture proportions are attained by determining the optimum mortar-to-aggregates packing voids ratio.
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References
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Kaffetzakis, M., Papanicolaou, C. (2012). Mix Proportioning Method for Lightweight Aggregate SCC (LWASCC) Based on the Optimum Packing Point Concept. In: Fardis, M. (eds) Innovative Materials and Techniques in Concrete Construction. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1997-2_8
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DOI: https://doi.org/10.1007/978-94-007-1997-2_8
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