How can the lime powder, construction gypsum and white cement be identified in a simple way?
Trial, water test, gypsum fixed fast, lime powder fever is not cured, cement does not heat, curing takes 1 hours,
Look and touch, gypsum white and fluffy, lime powder fine, there is temperature pungent, white cement slants yellow, cold
The simplest way is to smell the odor, gypsum tasteless, lime, acne nose, white cement odor is relatively pungent.
