[1]符国力,等.超细粉煤灰与原灰在水泥砂浆中的水化特征对比研究[J].西安建筑科技大学学报:自然科学版,2011,43(03):385-390.[doi:DOI:10.15986/j.1006-7930.2011.03.014]
　FU Guo-li,FENG S hao-hang,et al.Hydration character comparison of fly ash and ultra-fine fly ash in cement mortar[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2011,43(03):385-390.[doi:DOI:10.15986/j.1006-7930.2011.03.014]
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超细粉煤灰与原灰在水泥砂浆中的水化特征对比研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
43
期数:
2011年03期
页码:
385-390
栏目:
出版日期:
2011-06-30

文章信息/Info

Title:
Hydration character comparison of fly ash and ultra-fine fly ash in cement mortar
文章编号:
1006-7930(2011)03-0385-06
作者:
符国力1 ;  2 ;  冯绍航1 ;  2 ;  李　辉1 ;  2
(1.西安建筑科技大学材料科学与工程学院, 陕西西安710055 ;
2 .西部建筑科技国家重点实验室(筹), 陕西西安710055)
Author(s):
FU Guo-li 1 ;  2 ; FENG S hao-hang1 ;  2 ;  LI Hui 1 ;  2
(1 .Schoo l of Ma te rials Sci .and Eng ., Xi′an Univ .o f Arch.& Tech ., Xi′an 710055 , China ;
2.State Key Labo rato ry o f Architecture Science and Technolo gy in West China(XAUAT), Xi′an 710055, China)
关键词:
超细粉煤灰; 水化; 微观结构; 扫描电镜
Keywords:
ultra-f ine f ly ash ;  hy dration;  microstructure ;  SEM
分类号:
TQ172 .4+4
DOI:
DOI:10.15986/j.1006-7930.2011.03.014
文献标志码:
A
摘要:
主要对比研究了粉煤灰原灰颗粒和超细粉磨后的粉煤灰颗粒在水泥砂浆中的水化过程, 利用SEM
对水化行为进行了微观观察, 并结合砂浆试块3 d 、7 d、28 d 抗折、抗压强度.结果表明:粉煤灰的细度对试块
的强度影响最大, 尤其是后期对抗压强度, 在相同掺量下, 强度相差达2 倍左右;粒径在5 μm 左右的粉煤灰颗
粒在养护初期就已经开始水化, 且水化速率较快, 在28 d 时水化程度已经很充分, 粉煤灰原灰颗粒即使养护
到28 d 龄期时, 水化程度仍然很低;掺入细灰的试体各个龄期的结构均比原灰的要致密, 且钙矾石的生长更
快.
Abstract:
In this paper , the hy dratio n pro ce ss of o riginal fly ash(O-FA)and ultra-fine fly ash(U-FA)in cement mo rta r
were studied by S EM , and streng th ex pe riment such as flexur al and compressive str eng th of mor tar blo ck at 3 d, 7 d, 28
d w ere compared .The r esults show ed that the diameter of fly ash had the mo st impor tant impact o n macro-streng th o f
mor tar blo ck , e specially o n the late compressive streng th.Under the same co ntent of FA , the diffe rence of strength w as
almo st tw o times betw een U-FA and O-FA .The f ly ash at an aver age diameter o f about 5μm had already beg un to hy drate
in the ear ly time , a nd the rate of hydra te is fa ster than the original FA .With in 28 day s, the Hy dr ation deg ree of U-FA
is sufficiency , while that of O-FA remains low .The Str ucture of mor tar block with U-FA is more compact than that with
O-FA, and the g row th of AFt w ith U-FA is also quicker than that with O-FA .

参考文献/References:

References
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备注/Memo

备注/Memo:
＊收稿日期:2010-12-23 　　修改稿日期:2011-04-12
基金项目:陕西省科技厅工业化项目(2010K01-097)
作者简介:符国力(1977-), 男,陕西周至人, 讲师, 主要从事粉煤灰利用工作.
更新日期/Last Update: 2015-11-02