The extra fine sand mortar has great shrinkage, low toughness, and it is easy to crack, so the paper focuses on shrinkage ratio, crack index and toughness.
特细砂水泥砂浆收缩大,韧性低,易开裂,所以收缩率、压折比及裂缝指数是本论文主要的考察指标。
参考来源 - 干拌抗裂砂浆的配制及性能研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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