[Engineering Version] Daily Question 20180218
Thread Content
The areas where aerated concrete block walls must not be used, in the absence of effective measures, are ( ). A. Areas below the indoor floor level of a building B. Areas subject to prolonged exposure to water C. Environments affected by chemical corrosion D. Areas where the surface temperature of bricks is consistently between 40 and 50 degrees Celsius E. Areas that experience frequent changes between dry and wet conditions 【Answer】ABCE
E. Areas that are frequently exposed to alternating wet and dry conditions Right?
A. Areas below the indoor floor level of a building B. Areas subject to prolonged flooding C. Environments affected by chemical degradation
ABCE 【Answer Explanation】This question relates to the work of constructing fill wall masonry. Without effective measures, aerated concrete block walls shall not be used in the following areas: (1) Areas below the indoor floor level of a building. (2) Areas subjected to prolonged flooding or frequent alternation between dry and wet conditions. (3) Environments subject to chemical erosion (such as strong acids and strong bases) or high concentrations of carbon dioxide, etc. (4) The surface of the blocks is often exposed to high temperatures above 80°C.