Related Experiment Video
Updated: Jul 13, 2026

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
Published on: March 7, 2025
Laboratory investigation into optimal temperature for plaster of Paris application
Sheree M Conroy1, David Ward, John Fraser
1Department of Emergency Medicine, Toowoomba Base Hospital, Toowoomba, Queensland, Australia. sheree_conroy@health.qld.gov.au
Objective:
The present study aimed to determine the relationship between heat generated and time taken to reach maximum temperature when creating plaster of Paris casts, in relation to dipping water temperature and plaster slab thickness.
Methods:
The study was conducted in a laboratory setting. A standard procedure for dipping, draining, layering and covering plaster slabs was developed. A standard temperature measurement and data-recording method was applied. Variables tested were dipping water temperature (25, 30, 40, 50 degrees C) and plaster slab thickness (10-ply and 15-ply).
Results:
Mean maximum temperature varied between 31.9 and 41.7 degrees C, and was proportional to dipping water temperature and plaster slab thickness. Mean time to maximum temperature varied between 1216 and 728 s, and was inversely proportional to dipping water temperature and directly proportional to plaster slab thickness. All means were significantly different (P = 0.01).
Conclusion:
Increasing dipping water temperature and number of layers of plaster when making plaster slabs significantly increases temperature of plaster setting. These data are important for an understanding of optimum conditions for safer cast application. The present study highlights the need for further research in this area.
More Related Videos
Related Concept Videos
Masonry in Cold and Hot Weather Conditions
Other key practices include keeping masonry units and sand dry and...
Hot Weather Concreting
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Mass Concreting
To reduce the risk of such cracking, the concrete mix may incorporate low-heat cement and pozzolans to reduce the temperature rise. Pre-cooled angular aggregates and water-reducing admixtures...
Physical Methods for Controlling Microbial Growth: Temperature
Setting Time of Cement

