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[1]杨涛,姚晓,顾光伟,等.矿渣掺量对碱激发粉煤灰-矿渣反应过程及产物组成的影响[J].南京工业大学学报(自然科学版),2015,37(05):19-26.[doi:10.3969/j.issn.1671-7627.2015.05.004]
 YANG Tao,YAO Xiao,GU Guangwei,et al.Effects of slag on reaction and composition of alkali-activated fly ash-slag blends[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(05):19-26.[doi:10.3969/j.issn.1671-7627.2015.05.004]
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矿渣掺量对碱激发粉煤灰-矿渣反应过程及产物组成的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年05期
页码:
19-26
栏目:
出版日期:
2015-09-10

文章信息/Info

Title:
Effects of slag on reaction and composition of alkali-activated fly ash-slag blends
文章编号:
1671-7627(2015)05-0019-08
作者:
杨涛1姚晓1顾光伟1诸华军2
1.南京工业大学 材料科学与工程学院,江苏 南京 210009; 2.盐城工学院 材料工程学院,江苏 盐城 224051
Author(s):
YANG Tao1YAO Xiao1GU Guangwei1ZHU Huajun2
1.College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China; 2.College of Materials Engineering,Yancheng Institute of Technology,Yancheng 224051,China
关键词:
碱激发 粉煤灰 矿渣 反应过程 产物组成
Keywords:
alkali activated fly ash slag reaction progress composition
分类号:
TQ172
DOI:
10.3969/j.issn.1671-7627.2015.05.004
文献标志码:
A
摘要:
为探讨碱激发粉煤灰-矿渣复合体系的反应过程,采用等温量热仪(ICC)、X线衍射仪(XRD)、傅里叶转换红外光谱仪(FT-IR)及扫描电子显微镜-X线能谱仪(SEM-EDS)等测试方法对反应放热、产物组成及微观结构进行表征。结果表明:随矿渣掺量增加,碱激发反应放热总量显著提高,且产物FT-IR图谱中T—O—Si(T=Al或Si)谱带的峰值向低波数范围迁移(1 011 cm-1迁移到990 cm-1)。矿渣颗粒溶出的Ca2+易与硅酸盐单体结合,提高凝胶相的Si与Al摩尔比。部分Ca2+可代替钠铝硅酸盐凝胶相的三维网络结构中原有的Na+,导致产物结构的链接性及聚合程度降低,逐渐向钠钙铝硅酸盐凝胶相转变,其结构与由链状Si—O—Si组成的水化硅酸钙凝胶更为相似。产物凝胶相趋于致密。等温量热法与产物组成分析结合,可有效地表征复合体系碱激发反应程度的变化趋势。矿渣的掺入可促进体系中粉煤灰溶解及聚合反应,使得碱激发粉煤灰-矿渣复合水泥的性能优于激发单一原料。
Abstract:
To study the reaction of alkali-activated fly ash-slag blends,the heat release from reaction,the composition and the microstructure of products were analyzed by isothermal conduction calorimetry(ICC),X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR), and scanning electron microscope with energy disperse spectrum(SEM-EDS).Results showed that as the slag contents increased,the cumulative heat release of alkali activation increased sharply,and the T—O—Si(T=Al or Si)band peak in FT-IR spectra shifted to lower wavenumber(1 011 cm-1 to 990 cm-1).Ca2+ dissolved from slag particles tended to be combined with silicate monomers to increase the Si/Al male ratio of the gel phase.Part of Ca2+ could replace Na+ in the three-dimensional network of Na-aluminosilicate gels,resulting in the transformation of products into the Na-Ca-aluminosilicate gels,which was more similar to the calcium silicate hydrate gel phase formed with the chain of Si—O—Si,with its connectivity and polymerization extent decreasing,and the gel phase of products turned to be more compact.The variation tendency of reaction of alkali activated fly ash-slag blends was investigated by the combination of isothermal conduction calorimetry and analysis of products composition.The performance of alkali activated fly ash-slag blends was better than that of alkali activated single precursors.Thus,the slag incorporation would promote the dissolution and polymerization of fly ash in alkaline environment.

参考文献/References:

[1] Duxson P,Fernández-Jiménez A,Provis J L,et al.Geopolymer technology:the current state of the art [J].J Mater Sci,2007,42:2917-2933.
[2] Habert G,Lacaillerie J B,Roussel N.An environmental evaluation of geopolymer based concrete production:reviewing current research trends [J].J Clean Prod,2011,19:1229-1238.
[3] 孔德玉,张俊芝,倪彤元,等.碱激发胶凝材料及混凝土研究进展[J].硅酸盐学报,2009,37(1):151-159.
[4] Lecomte I,Henrist C,Liégeois M,et al.(Micro)-structural comparison between geopolymers,alkali-activated slag cement and Portland cement [J].J Eur Ceram Soc,2006,26:3789-3797.
[5] Chao L,Henghu S,Longtu L.A review:the comparison between alkali-activated slag(Si+Ca)and metakaolin(Si+Al)cements [J].Cem Concr Compos,2010,40:1341-1349.
[6] Bernal S A,Provis J L,Rose V,et al.Evolution of binder structure in sodium silicate-activated slag-metakaolin blends [J].Cem Concr Compos,2011,33:46-54.
[7] Yip C K,Lukey G C,Provis J L,et al.Effect of calcium silicate sources on geopolymerisation [J].Cem Concr Res,2008,38:554-564.
[8] 诸华军,姚晓,张祖华,等.偏高岭土-矿渣基地聚合物缓凝剂
  的性能研究[J].建筑材料学报,2012,15(3):416-421.
[9] Puligilla S,Mondal P.Role of slag in microstructural development and hardening of fly ash-slag geopolymer [J].Cem Concr Res,2013,43:70-80.
[10] Lloyd R R,Provis J L,van Deventer J S J.Microscopy and microanalysis of inorganic polymer cements:the gel binder [J].J Mater Sci,2009,44:620-631.
[11] Zhang Z H,Wang H,Provis J L,et al.Quantitative kinetic and structural analysis of geopolymers:1.the activation of metakaolin with sodium hydroxide [J].Thermochim Acta,2012,539:23-33.
[12] Zhang Z H,Provis J L,Wang H,et al.Quantitative kinetic and structural analysis of geopolymers:thermodynamics of sodium silicate activation of metakaolin [J].Thermochim Acta,2013,565:163-171.
[13] Clayden N J,Esposito S,Aronne A,et al.Solid state 27Al NMR and FT-IR study of lanthanum aluminosilicate glasses [J].J Non-Cryst Solids,1999,258(1/2/3):11-19.

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备注/Memo

备注/Memo:
收稿日期:2014-07-29
基金项目:国家高技术研究发展计划(863计划)(2006AA06Z225); 江苏高校优势学科建设工程
作者简介:杨涛(1987—),男,河北秦皇岛人,博士生,主要研究方向为碱激发胶凝材料; 姚晓(联系人),教授,E-mail:htmpaper@sina.com.
引用本文:杨涛,姚晓,顾光伟,等.矿渣掺量对碱激发粉煤灰-矿渣反应过程及产物组成的影响[J].南京工业大学学报:自然科学版,2015,37(5):19-26..
更新日期/Last Update: 2015-09-20