CLC number: TU502
On-line Access: 2021-12-15
Received: 2020-11-24
Revision Accepted: 2021-03-26
Crosschecked: 2021-11-18
Cited: 0
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Ru Wang, Yu-sheng Fan, Zhao-jia Wang, Tian-yong Huang, Tao Zhang. Performance development of styrene-butadiene copolymer-modified calcium sulfoaluminate cement mortar under different curing conditions[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2000526 @article{title="Performance development of styrene-butadiene copolymer-modified calcium sulfoaluminate cement mortar under different curing conditions", %0 Journal Article TY - JOUR
不同养护条件下丁苯共聚物改性硫铝酸盐水泥砂浆的性能发展创新点:1. 发现丁苯共聚物可以抑制硫铝酸盐水泥砂浆后期强度倒缩;2. 理清了温度和湿度对对比砂浆和改性砂浆性能的影响规律. 方法:采用不同温湿度条件的控制、物理力学性能测试和扫描电子显微分析等方法进行研究. 结论:1. 从28天到360天,对比砂浆力学性能(包括抗折强度、抗压强度和拉伸粘结强度)先随龄期的延长而增长,但到一定龄期后会出现倒缩,而毛细孔吸水率几乎不受龄期影响.2. 丁苯共聚物的加入可以有效抑制硫铝酸盐水泥砂浆强度倒缩、降低毛细孔吸水率,而且当丁苯共聚物掺量达到10%及以上时砂浆性能得到显著改善.3. 温度对对比砂浆和改性砂浆的影响规律不同;高温有利于砂浆早期强度的发展,但也会引起对比砂浆后期更严重的抗折和抗压强度倒缩.4. 高湿有利于砂浆性能的发展.5. 扫描电子显微分析的结果很好地解释了物理力学性能的变化. 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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