多选题:有利于石灰稳定土基层裂缝的防治措施有(  )。

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题目内容:
有利于石灰稳定土基层裂缝的防治措施有(  )。 A.超出规范标准提高水泥用量
B.施工用土中适量掺加粉煤灰
C.石灰土成型后应及时洒水或覆盖塑料薄膜养护
D.采用塑性指数适中的土
E.选择在晚秋、初冬后施工

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