为了使土壤聚合物固化重金属离子比较理想效果,同时减少成本,本实验在土壤聚合物中掺加30%的粉煤灰固化重金属离子,结果表明:掺加 30% 粉煤灰的土壤聚合物对不同重金属离子有各自的理想固化量;综合抗压强度和浸出毒性两个方面,Cu2+、Zn2+ 和 Pb2+ 的理想固化量分别为2.O%、1.3%和1.4%;固化体具有良好的后期稳定性和抗酸性,可以满足我国酸雨比较严重的南方地区建材应用要求.总之,掺加 30% 粉煤灰的土壤聚合物固化重金属离子具有良好的经济效益和环境效益.
参考文献
| [1] | A.Palomo;M.W.Grutzeck .Alkali-activated fly ashes A cement for the future[J].Cement and Concrete Research,1999(8):1323-1329. |
| [2] | 金漫彤,沈学优.土壤聚合物的制备及其固化重金属离子的研究[J].化工环保,2005(02):84-87. |
| [3] | H. Xu;J. S. J. V. Deventer .The geopolymerisation of alumino-silicate minerals[J].International Journal of Mineral Processing,2000(3):247-266. |
| [4] | 代新祥,文梓芸.新型土壤聚合物研究进展[J].合成材料老化与应用,2001(03):27-30. |
| [5] | Davidovits J .Geopolymers:Man-made rock geosynthesis and the resulting development of very early hish strength cement[J].Material Education,1994,16(2-3):91-139. |
| [6] | Davidovits J .Geopolymerice concretes for environmental protection[J].Concrete International,1990,12(07):30-40. |
| [7] | 代新祥,文梓芸.土壤聚合反应的影响因素[J].建筑材料学报,2002(03):284-288. |
| [8] | 钱觉时.粉煤灰特性与粉煤灰混凝土[M].北京:科学出版社,2002:5-6. |
| [9] | 李国刚.固体废物试验与监测分析方法[M].北京:化学工业出版社,2003:98. |
| [10] | Phair JW.;van Deventer JSJ.;Smith JD. .Effect of Al source and alkali activation on Pb and Cu immobilisation in fly-ash based "geopolymers"[J].Applied Geochemistry: Journal of the International Association of Geochemistry and Cosmochemistry,2004(3):423-434. |
| [11] | J.Z. Xu;Y.L. Zhou;Q. Chang;H.Q. Qu .Study on the factors of affecting the immobilization of heavy metals in fly ash-based geopolymers[J].Materials Letters,2006(6):820-822. |
| [12] | Allahverdi A;Skvara F .Nitric acid attack on hardened paste of geopolymeric cement PartI[J].Ceramics-Silikaty,2001,45(03):81-88. |
| [13] | Allahverdi A;Skvara F .Nitric acid attack on hardened paste of geopolymeric cement PartII[J].Ceramics-Silikaty,2001,45(04):143-149. |
| [14] | 杨华全,董维佳,王仲华.掺矿渣粉及粉煤灰混凝土微观性能试验研究[J].长江科学院院报,2005(01):46-49. |
| [15] | A. Fernandez-Jimenez;A. Palomo;M. Criado .Microstructure development of alkali-activated fly ash cement: a descriptive model[J].Cement and Concrete Research,2005(6):1204-1209. |
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%