保温砂浆的保水性是指砂浆保持水分的能力。保水性不良的砂浆，使用过程中出现泌水，流浆，使砂浆与基底黏结不牢，且由于失水影响砂浆正常的黏结硬化，使砂浆的强度降低。

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BENWENZHEJIANGFENGCAIWANG：http://billyartnyc.com/lfhuadong2/vip_doc/18715962.html