Early-Age Stress-Hydration Kinetics and Thermomechanics


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Title: Early-Age Stress-Hydration Kinetics and Thermomechanics

Author(s): I. Pane and W. Hansen

Publication: Special Publication

Volume: 206


Appears on pages(s): 293-302

Keywords: blended cements, heat, hydration, non-isothermal, strength

Date: 4/1/2002

A current research project on hydration kinetics, mechanical properties and early age stress behavior of blended cement conducted at the University of Michigan is reviewd in this paper. A number of experiments including calorimetry and differential thermal analysis were performed to investigate hydration kinetics. The mechanical properties investigated included the compressive strength, splitting tensile strength, Young's modulus, creep compliance, relaxation modulus, and coefficient of thermal dilation. The early age stress behavior was studied by measuring the stress developed in a uniaxially restrained concrete member. In addition, the deformation due to autogeneous shrinkage was also measured experimentally. The experimental data could be used to quantify degree of hydration,, and temperature effects on hydration, and could be used as imputs for predicting the early age stress development in concrete.