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水泥技术, 2013, 1(5): 23-26    
  设计与研究 本期目录 | 过刊浏览 | 高级检索 |
纤维改性磷石膏基胶凝材料及阻裂作用机理分析
1江苏省一夫新材料科技有限公司  2南京工业大学 材料科学与工程学院
Fiber Modified Phosphogypsum-based Cementitious Material and Anti-cracking Mechanism Analysis
1 Jiangsu Yi Fu New Material Technology Co.,Ltd. 2 Nanjing Univesity of Technology
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摘要 在磷石膏基胶凝材料(PGS)中加入纤维改善PGS的抗裂性能,通过评价不同龄期样品的抗冲击功、抗折强度、抗冻融性能和分析断口形貌等表征纤维对PGS固化体的抗裂效果。结果表明:化纤对PGS固化体增韧和抗裂性能优于矿纤和玻纤。在20℃(湿度>90%)条件下,化纤掺量为0.7%时,PGS固化体28d的抗冲击功和抗折强度分别较净浆试块提高了389.5%和50.6%;在冻融循环15次后掺化纤的 PGS固化体抗冲击功、抗折强度和质量损失率较PGS净浆固化体分别降低了87.4%、71.4%和86.0%;化纤穿插于PGS固化体内部,形成一种三维的网状包裹状态,起桥联搭接作用,抗裂效果显著。
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何玉鑫
万建东
刘小全
华苏东
关键词:  磷石膏  胶凝材料  纤维  抗裂  抗冻性能    
Abstract: Municipal Fibers were used to improve phosphogypsum-based cementations material (PGS) anti-cracking ability. The influence of adding fiber was investigated by measuring the impact work, flexural strength, freeze-resistance, and the microscopy of fracture surface. Results showed that fiber could prevent PGS from cracking obviously better than both mineral fiber and glass fiber. The impact work and the flexural strength of PGS with 0.7% fiber cured at 20℃ (R.H.≥90)for 28d were increased by 389.5% and 50.6% respectively; after 15 freeze-thaw cycles, the impact work, flexural strength and mass loss rate of cementitious material with 0.7% fiber were decreased by 87.4%, 71.4% and 50.4% respectively. The fiber distributed in the matrix of hardened PGS offered a bridging function notably because of three-dimensional network structure.
Key words:  phosphogypsum    cementitious material    fiber    anti-crack    anti-freezing function
收稿日期:  2012-12-29                出版日期:  2013-09-25      发布日期:  2018-06-04      整期出版日期:  2013-09-25
TQ172.462  
引用本文:    
何玉鑫, 万建东, 刘小全, 华苏东.
纤维改性磷石膏基胶凝材料及阻裂作用机理分析
[J]. 水泥技术, 2013, 1(5): 23-26.
HE Yu-xin, WANG Jian-dong, LIU Xiao-quan, HUA Su-dong .
Fiber Modified Phosphogypsum-based Cementitious Material and Anti-cracking Mechanism Analysis
. Cement Technology, 2013, 1(5): 23-26.
链接本文:  
http://www.cemteck.com/CN/  或          http://www.cemteck.com/CN/Y2013/V1/I5/23
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