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Numerical simulations of hardening and cooling of the early-age concrete

Knor G.

IPPT Reports on Fundamental Technological Research

2013

nr 4

11-18

The paper presents a new method of control, modeling and identification of thermal fields in concrete structures. The proposed methodology boils down to four interdependent tasks: 1) the determination of a time-dependent intensity of the heat of hardening and other thermophysical properties of concrete by means of the numerical inverse problem solution, which is based on experimental measurements of temperature, 2) numerical modeling of the evolution of the thermal field in the maturing concrete structure, using material properties determined in the first point, 3) experimental verification of a thermal field modeling (point 2) using 2D and 3D concrete samples, 4) the formulation of the problem of optimum design of the cooling system to mitigate thermal stress concentrations during maturing of massive concrete structures.