**Assessment of the Mechanical Properties of ESD Pseudoplastic Resins for Joints in Working Elements of Concrete Structures**

### **Dominik Logo ´n \*, Krzysztof Schabowicz and Krzysztof Wróblewski**

Faculty of Civil Engineering, Wrocław University of Science and Technology, Wybrze ˙ze Wyspia ´nskiego 27, 50-370 Wrocław, Poland; krzysztof.schabowicz@pwr.edu.pl (K.S.); k.wroblewski@wp.pl (K.W.) **\***Correspondence:dominik.logon@pwr.edu.pl

Received: 9 May 2020; Accepted: 24 May 2020; Published: 26 May 2020

**Abstract:** Concrete structure joints are filled in mainly in the course of sealing works ensuring protection against the influence of water. This paper presents the methodology of testing the mechanical properties of ESD pseudoplastic resins (E-elastic deformation, S-strengthening control, D-deflection control) recommended for concrete structure joint fillers. The existing standards and papers concerning quasi-brittle cement composites do not provide an adequate point of reference for the tested resins. The lack of a standardised testing method hampers the development of materials universally used in expansion joint fillers in reinforced concrete structures as well as the assessment of their properties and durability. An assessment of the obtained results by reference to the reference sample has been suggested in the article. A test stand and a method of assessing the mechanical properties results (including adhesion to concrete surface) of pseudoplastic resins in the axial tensile test have been presented.

**Keywords:** ESD resin; expansion joint; quasi-plastic material; energy absorption
