" p r e s s u r e " part of pressure grouting. Cement is composed of jagged rock-
like particles of matter that are very abrasive without pressure. Under
pressure, cement grout can damage the skin or cause severe injury to the
e y e s . It is important that grout pipes and hoses be in good condition and all
connections be properly made. If a grout line breaks while grouting at high
pressure, grout can be ejected many feet with great force. If necessary for
personnel to be exposed to cement dust, goggles should be worn to protect
the eyes. If the weather is windy and dust conditions are severe, exposed
portions of the skin should also be protected to avoid cement "burn." Waste
grout should be discarded away from the work area as a good housekeeping
practice and to eliminate splashing hazards.
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