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【Daily Question】Utilities – Civil Engineering – 20200420

2020-04-20View Original

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Which of the following statements is correct? ( ) A. When laying the slab finish layer, the compressive strength of the cement-based base layer must be no less than 1.2 MPa. B. When cement mortar is used as the bonding layer for laying the slab finish layer and for filling the gaps between slabs, the strength grade of the cement should not be lower than 32.5. C. Lime mortar shall not be used as a base layer when constructing slab skirtings. D. When laying slabs, it is advisable to avoid using edge pieces whose length is less than 1/3 of the slab’s side length. E. Non-sparking surfaces should be paved using cement-based mixtures. Answers: ABCE

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