Shrinkage Stress of the RubCon Matrix

A RubCon layer thickness of 10 mm was put on the surface of a steel console plate measuring 350 x 20 x 2 mm. Then the device was placed in a drying cabinet 

FIGURE 2.13 Test device for determination of shrinkage stress of RubCon matrix (l)rigid frame, (2) steel substrate, (3) layer of RubCon, (4) indicator, (5) stand, (6) holder. (Reprinted from Yu. Potapov, O. Figovsky, Yu. Borisov, S. Pinaev, and D. Beilin, Joint Work of Reinforcement and Polymer Concrete Matrix, J. Scientific Israel Technological Advantages 4, nos. 3-4 (2002) 14-19. With permission.) 

Displacement of the free end of a steel plate substrate occurs due to shrinkage stresses in a RubCon layer. Knowing the value of this displacement, it is possible to determine shrinkage stresses with the formula  

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Dependence of internal shrinkage stresses of the RubCon matrix at the time of its manufacture was determined with the help of a special device (Figure 2.13). 

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