[Back]

R. Lackner, Ch. Brandstätter, H.A. Mang:
"Evaluation of Properties of Soilcrete by Means of Back Analysis: Combination of in-situ Temperature Measurements and a Thermochemical Material Law";
in: "Proceedings of the 1st MIT Conference on Computational Fluid and Solid Mechanics", K.J. Bathe (ed.); Elsevier Science, Amsterdam, 2001, 1281 - 1284.

In this paper, a new approach for the evaluation of properties of soilcrete is proposed (soilcrete is composed of soil and cement grout; it is the result of soil improvement by means of jet grouting). It combines a material model for the simulation of the hydration process, i.e., the chemical reaction between cement and water, with in-situ temperature measurements. The deviation between in-situ temperature measurements and the respective numerical results is minimized by adapting the size of the soilcrete column and the amount of cement grout in soilcrete in the numerical model and repeating the simulation. The set of parameters yielding the lowest deviation represents the desired properties of soilcrete.

Keywords: hydration, jet grouting, soilcrete, phase change, soil improvement, thermochemical analysis, couplings, back analysis