Case study: Breaking granite boulders using Expando
This case study describes how Expando was used for breaking granite boulders in a project managed by Pan Civil to widen the road and remove boulder hazards from the road shoulder in the Moonbi Hills region of NSW.
The rock was granite and extremely hard. Some of the boulders were up to 200 tons.
Neil Champion, director of Pan Civil said: “It was uneconomical to break these rocks using the hammers on our excavators. So we turned to Expando. Drilling was done by hand and by machine. The splitting was taking between 24 and 72 hours depending on ambient temperatures”.
Neil’s photos are great examples of what can be done using Expando.
Expando is a non explosive demolition agent that cracks rocks and concrete without the need for blasting or heavy equipment like excavators, jackhammers or concrete saws.