Protect your hands wit gloves ad your eyes with safety goggles. And protect yourself with a mask.
Do not bring your face near the drill holes once these have been filled due to the remote possibility of a siphon effect causing CRAS to shoot out of the mouth of the drill hole. This might occur for several reasons:
- The water is over 15º C.
- The mass has not been prepared correctly.
- In diameters of over 50 mm CRAS NORMAL is being used instead of CRAS DEMOL.
- Use a diameter of over 50 mm with temperatures in excess of 25º C.