Open AccessComputation and experimental considerations on dynamic testing of cement mortar
Author(s) -
Sergiu-Mihai Alexa-Stratulat,
Daniel Covatariu,
Ionuţ-Ovidiu Toma,
Gabriela Covatariu
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1141/1/012019
Subject(s) - computation , mortar , dynamic modulus , poisson's ratio , experimental data , modulus , structural engineering , rigidity (electromagnetism) , cement , structural rigidity , materials science , young's modulus , dynamic testing , set (abstract data type) , poisson distribution , composite material , computer science , engineering , mathematics , algorithm , dynamic mechanical analysis , statistics , polymer , programming language
Non-destructive tests to assess the dynamic characteristics of the materials are important for both in-situ and laboratory situations. Elastic modulus, rigidity modulus and Poisson ratio can be determined through dynamic testing, by employing resonant frequency measurements. The ASTM C-215 standard contains the necessary information for the experimental set-up and subsequent computation using the longitudinal, transversal and torsional frequencies, for both prismatic and cylindrical specimens. Nevertheless, some experimental particularities are not explained and their influence on the final results might prove important. In this paper, the experimental and computational insights on performing the dynamic Young modulus test for cement mortar prismatic samples, with emphasis on the importance of interpretation of the results are presented. The type of specimen support and the actual data manipulation, when extracting results, are taken into consideration. The results may prove important for the correct employment of dynamic testing.