Canadian Council of Independent Laboratories (CCIL) Practice Exam 2026 – All-in-One Comprehensive Guide to Exam Success!

The preparation of sulphur mortar requires careful temperature control to ensure optimal properties and effective binding. Maintaining the temperature within the range of 130 to 145 degrees Celsius is vital because it allows the sulphur to fully melt and properly incorporate with the aggregates. This specific temperature range helps in achieving a uniform mixture, ensuring that the sulphur can effectively coat the aggregate particles without being too viscous or degrading.

Temperatures below this range may not sufficiently melt the sulphur, leading to poor bonding and inadequate curing properties. Conversely, temperatures that exceed 145 degrees Celsius risk thermally degrading the sulphur, which can affect the integrity and performance of the mortar. Therefore, the chosen range ensures that the sulphur mortar exhibits durability, strength, and the desired workability needed for various applications.