|Table of Contents|

Action principle analysis on admixtures used for mixture of lime fly-ash(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年02期
Page:
1-4
Research Field:
Publishing date:
2010-04-20

Info

Title:
Action principle analysis on admixtures used for mixture of lime fly-ash
Author(s):
ZHANG Chao
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, Chin
Keywords:
road engineering;  semi-rigid base course;  lime-fly-ash mixture for road base;  admixture;  acting principle;  catalytic action
PACS:
U414.1
DOI:
-
Abstract:
According to the characteristics that admixtures of sodium carbonate and sodium sulfate can promote early stage strength formation of lime-fly-ash mixture, the reaction principles and differences for this process are explained with chemical reaction theory. The results of theoretical analysis consider that the condition of fly-ash can be excited and its stabilized composition structure can be depolymerized with alkalinity released by admixtures in different ways to form early stage strength. Meanwhile, the reaction between admixtures and lime-fly-ash mixture produce calcium carbonate and ettringite respectively which have higher water stability to promote strength development. Furthermore, the analysis quantitatively shows that the admixtures can also increase the mixture early strength more effectively through catalytic action. 3 tabs, 6 refs.

References:

[1] 张 超.劣质低活性粉煤灰路用理论基础[J].长安大学学报:自然科学版,2004,24(3):13-16,34. ZHANG Chao.Application principle in road base course for low-activity fly-ash[J].Journal of Chang'an University:Natural Science Edition,2004,24(3):13-16,34.
[2]沙爱民,胡力群.半刚性基层材料的结构特点[J].中国公路学报,2008,21(4):1-5. SHA Ai-min,HU LI-qun.Structural characteristics of semi-rigid base course material[J].China Journal of Highway and Transport,2008,21(4):1-5.
[3]刘振清,黄 卫.废弃尾矿料在路面(底)基层中的应用[J].交通运输工程学报,2002,2(4):11-16,28. LIU Zhen-qing,HUANG Wei.Application of WKL to pavement subbase[J].Journal of Traffic and Transportation Engineering,2002,2(4):11-16,28.
[4]王 智,郑洪伟,钱觉时,等.硫酸盐对粉煤灰活性激发的比较[J].粉煤灰综合利用,1999(3):15-18. WANG Zhi,ZHENG Hong-wei,QIAN Jue-shi,et al.A study on comparison of sulfate activating fly ash[J].Fly Ash Comprehensive Utilization,1999(3):15-18.
[5]袁春毅,赵乐易,韩 森.农村公路用硬化二灰土路面材料性能[J].长安大学学报:自然科学版,2009,29(1):26-30. YUAN Chun-yi,ZHAO Le-yi,HAN Sen.Material properties of hardened lime-flyash-soil for rural highway[J].Journal of Chang'an University:Natural Science Edition,2009,29(1):26-30.
[6]JTJ 034—2000,公路路面基层施工技术规范[S].

Memo

Memo:
-
Last Update: 2010-04-20