NM CID GS-4 Practice Questions - New Mexico CID GS-4 Concrete, Cement, Walkways And Driveways Examination Exam

Wet portland cement and fresh concrete on skin or in the eyes are hazardous because they are:

Chemically neutral and only a cleanliness issue Highly alkaline; they cause chemical burns and require immediate flushing, PPE, and silica-dust controls when cutting or grinding Acidic like muriatic acid in the mixer Toxic only after the concrete has reached 28-day strength

Correct Answer:

Highly alkaline; they cause chemical burns and require immediate flushing, PPE, and silica-dust controls when cutting or grinding

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