【Daily Question】【Civil Engineering Version 20180603】

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Which of the following statements regarding the installation of ceramic tile floors is correct? ( ) A. The wet-laying method is mainly suitable for laying small tiles with dimensions of 500mm×500mm or less. B. For the dry-laying method, a base layer with a thickness of 20–50mm should first be laid on the floor using 1:2 ratio of hydraulic cement mortar. C. Before laying the tiles, a trial assembly should be carried out; after that, the tiles should be arranged in order, numbered, and soaked in water for later use. D. After the tiles have been laid, they should be watered for curing for 24 hours, with the curing period lasting no less than 14 days. Answer: C 【Explanation】Before laying the tiles, the order of placement and the positions of the tiles should be determined based on the grid lines, and a trial assembly should be conducted to check the pattern, colors, and orientation of the textures. After trying out the assembly, arrange them in order, number them, and keep them soaked for later use. Wet tiling method: This method is mainly suitable for laying small-sized tiles (400mm×400mm and below). For the dry bonding method, a base layer with a thickness of 20–50 mm should first be laid on the ground using a 1:3 mix of hard-setting cement and sand. Water the surface for curing 24 hours after brick laying, with a duration of no less than 7 days.