Abstract
Abstract Soundless Chemical Demolition Agent (SCDA) is a composite that can be used in rock breaking applications as an alternative to blasting. The SCDA is used to fill in the holes of a boulder that needs to be broken. The long time taken to apply SCDA, up to 12 hours or more, can be reduced by adding a sulphate compound to SCDA. The SCDA used in this study is DEXPAN which is then substituted with 5%- 30% of potassium sulphate and calcium sulphate to observe the expansion pressure rate. The addition of 30% potassium sulphate and calcium sulphate shows a significant increase of the expansion pressure rate. The presence of ettringite has increased when the sulphate compound is mixed with SCDA, showing that the mechanism occurs to improve the performance of SCDA. This work can potentially be used to understand the mechanisms of SCDA better and provide new ideas to be applied more effectively.
Published Version
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