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Question:

The following materials, is not commonly used in building mortar cementing material is ().

[Single choice] the following materials, do not belong to the commonly used building mortar cementing material is (). [Two construction division "construction] A. Lime B. cement C. fly ash D. gypsum

Answer:

Building mortar commonly used cementing materials are cement, lime, gypsum and so on In the selection should be based on the use of the environment, use and other reasonable choice (Mortar), but also the choice of hydraulic cementitious material (cement); if used in humid environment or water mortar, you must use cement as a gel material The correct item for this question is "C fly ash"
For a certain field of practical experience of the candidates, this problem is not difficult
Answer: This is a building materials on the technical and performance of the title, the main assessment of commonly used building mortar using the knowledge of cementing materials

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