本文在碱激发粉煤灰矿物聚合物的基础上,研究了在粉煤灰中掺人适量硅灰形成碱激发硅灰-粉煤灰基矿物聚合物的性能.结果表明,当碱激发剂Na2SiO3·9H7O用量20wt%,硅灰掺量10wt%时,碱激发硅灰-粉煤灰基矿物聚合物在室温养护下抗压强度达到58.83 Mpa,较不掺硅灰的矿物聚合物强度提高了72%.X衍射分析表明,形成的矿物聚合物为无定形矿物相,SEM微观形貌分析表明,掺入硅灰后,矿物聚合物的微观结构更加致密,其强度大幅度提高.
参考文献
[1] | Davidovits J.High alk-alicements for 21st centuryeoncretes[A].Ameriean Concrete Insititue,Detroit,1994:383-397. |
[2] | 孟丽峰,郑娟荣.粉煤灰基矿物聚合物的强度影响因素研究[J].硅酸盐通报,2010(03):542-546. |
[3] | Khale D;Chaudhary R .Mechanism of geopolymerization and factors influencing its development: a review[J].Journal of Materials Science,2007(3):729-746. |
[4] | 张江泳.硅灰在超高强混凝土中的应用[J].国外建材科技,2008(02):12-15. |
[5] | 贾屹海,韩敏芳,孟宪娴,许泽胜.粉煤灰地质聚合物凝结时间的研究[J].硅酸盐通报,2009(05):893-899. |
[6] | Zhang YJ;Zhao YL;Li HH;Xu DL .Structure characterization of hydration products generated by alkaline activation of granulated blast furnace slag[J].Journal of Materials Science,2008(22):7141-7147. |
[7] | Fernando Pacheco-Torgal;Joao Castro-Gomes;Said Jalali .Alkali-activated binders: A review Part 1. Historical background, terminology, reaction mechanisms and hydration products[J].Construction and Building Materials,2008(7):1305-1314. |
[8] | 梁慧 .粉煤灰活性效应研究[D].中南大学,2007. |
[9] | 史才军;郑克仁.碱-激发水泥和混凝土(Alakli-actived cement and concretes)[M].北京:化学工业出版社,2008:202-203. |
[10] | Fernandez-Jimenez, A;Palomo, A;Sobrados, I;Sanz, J .The role played by the reactive alumina content in the alkaline activation of fly ashes[J].Microporous and Mesoporous Materials,2006(1/3):111-119. |
[11] | Femandes-Jimenez A;Palomo A;Criado M .Microatructure development of alkali-activated fly ash cement:a descriptive model[J].Cement and Concrete Research,2005,35:1204-1209. |
[12] | Lloyd R.R .[D].University of Melbourne,Australia,2008. |
[13] | 王鸿灵,李海红,冯治中,田农,阎逢元.不同活性高岭土矿物聚合反应的研究[J].材料科学与工程学报,2004(04):580-583. |
[14] | M. Criado;Fernandez-Jimenez;A.G. de la Torre .An XRD study of the effect of the SiO_2/Na_2O ratio on the alkali activation of fly ash[J].Cement and Concrete Research,2007(5):671-679. |
[15] | Provis, JL;Yong, CZ;Duxson, P;van Deventer, JSJ .Correlating mechanical and thermal properties of sodium silicate-fly ash geopolymers[J].Colloids and Surfaces. A, Physicochemical and Engineering Aspects,2009(1/3):57-63. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%