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AB Nonlinear Solutions Oy, 20520 Turku, Finland

Nonlinear models of workability and compressivestrength help minimise costs


Optimising concrete composition is a fairly complex problem. The cost and properties of fresh and hardened concrete depend on the aggregate mix, amounts of cement, water, superplasticisers, microsilica, retarders, air entrainment agents, etc. The problem can be split into two parts: optimisation of the aggregate mix for minimum voidage, and optimisation of the cement paste. Two articles published in Concrete Plant International (CPI 02-2008 and CPI 03-2009) described the first part of the problem and its solutions for three and four aggregates. This work focuses on the second part, with the aggregate mix fixed. This, of course, assumes that the aggregate mix does not significantly affect the workability or compressive strength, which is true to some extent.

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AB Nonlinear Solutions Oy
Kaivokatu 10A 21
20520 Turku, Finland
T +358 2 2154721

CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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