Data for the article 'Influence of aggregate particles on the pullout of a threaded screw from the cement-based materials'

Published: 19 July 2023| Version 2 | DOI: 10.17632/yt39t8stxj.2
ShahNur Alam Sourav


The test, referred to as the Post-installed Screw Pullout (PSP) test, is based on a modified pullout testing of concrete. The procedure involved a controlled failure pattern where a complete pullout failure is achieved. During the pullout operation, the load is transferred through the screw thread to the surrounding materials, such as concrete and/or mortar. The screw threads interact with the surrounding materials during their movement. The presence of hard aggregate particles in concrete provides a harder medium of load transfer compared to mortar leading to an irregular distribution of stress in the threads. This irregularity is reflected in the load-displacement curves. An understanding of the thread interaction would help in a better understanding of the load-carrying capacity of the screw. For this study, the PSP test setup was used for the investigation. The files associated with Figures 4, 6, 7, 8, 9 and 15 provide the load-displacement curves obtained during the PSP test. A parameter termed the “Aggregate Ratio in Concrete” (ARC) was introduced to assess the effect of aggregate on the pullout behaviour. ARC is defined as the ratio of the area of the aggregate particles to the total area of the drilled hole. An open-source image processing software, ImageJ [32] was used for the analysis. The ARC values of the different samples were calculated and provided in the file named 'ARC Photographs'.



University College Dublin


Concrete Technology, Concrete Structure