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水泥技术, 2014, 1(2): 30-34    
  设计与研究 本期目录 | 过刊浏览 | 高级检索 |
纳米改性CFA-MSWI复合地聚合物的耐久性
1先进土木工程材料教育部重点实验室(同济大学) 2同济大学环境材料研究所
Durability  of  Nano-Modified  CFA-MSWI  Fly  Ash  Composite  Geopolymer
1. Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education, Tongji University  2. Institute of environmental materials, Tongji University
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摘要 利用城市垃圾焚烧飞灰(MSWI)和高钙粉煤灰(CFA)制备地聚合物,并采用纳米SiO2和γ-Al2O3对MSWI-CFA复合地聚合物进行改性研究,研究了纳米改性复合地聚合物的耐久性。结果表明:MSWI-CFA复合地聚合物本身具有很好的耐高温性能;化学侵蚀对复合地聚合物的影响依次为HCl溶液>NaOH溶液>Na2SO4溶液。纳米微粒对MSWI-CFA复合地聚合物的干缩性能、抗化学侵蚀性能和耐高温性能均有较好的改善作用,且纳米SiO2对地聚合物的改善作用优于纳米γ-Al2O3。SEM和BET研究进一步证实,纳米微粒能够有效改善地聚合物的微观结构和孔结构,使地聚合物大孔体积减少,体系结构更为致密,增强了地聚合物的耐久性。
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郭晓潞
施惠生
董文靖
关键词:  垃圾焚烧飞灰(MSWI)  高钙粉煤灰(CFA)  地聚合物  纳米微粒  耐久性    
Abstract: The geopolymers were explored and prepared from municipal solid waste incineration fly ash (MSWI) and class C fly ash (CFA). The durability of geopolymers modified by nano-particles of SiO2 and γ-Al2O3 was studied. The results show that the CFA-MSWI fly ash composite geopolymers have good high-temperature resistance. The negative effects of chemical corrosion on the composite geopolymers were HCl >NaOH >Na2SO4 solution. The dry shrinkage, chemical corrosion resistance and high temperature resistance could be improved by nano-particles and the effect of SiO2 was better than that of γ-Al2O3. SEM and BET results further confirmed that microstructure and pore structure of the geopolymers could be modified effectively by nano-particles whichcan reduce volume of the large pores, compact system structure, and strengthen durability of the geopolymers.
Key words:  municipal solid waste incineration fly ash (MSWI)    class C fly ash (CFA)    geopolymer;nanoparticles    durability
收稿日期:  2013-08-20                出版日期:  2014-03-25      发布日期:  2018-05-29      整期出版日期:  2014-03-25
TQ172.18  
基金资助: 国家自然科学基金(51172164和51208370)、教育部博士点基金(20110072120046)、中央高校基本科研业务费专项资金(0500219170)
引用本文:    
郭晓潞, 施惠生, 董文靖. 纳米改性CFA-MSWI复合地聚合物的耐久性[J]. 水泥技术, 2014, 1(2): 30-34.
GUO Xiao-lu, SHI Hui-sheng, DONG Wen-jing. Durability  of  Nano-Modified  CFA-MSWI  Fly  Ash  Composite  Geopolymer. Cement Technology, 2014, 1(2): 30-34.
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http://www.cemteck.com/CN/  或          http://www.cemteck.com/CN/Y2014/V1/I2/30
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