[1]史 琛,何廷树,李益民,等.粉煤灰对硅酸盐水泥-铝酸盐水泥-石膏三元体系性能的影响[J].西安建筑科技大学学报：自然版,2016,48(03):459-462.[doi:10.15986/j.1006-7930.2016.03.026]
　SHI Chen,HE Tingshu,LI Yimin,et al.Effects of fly ash on the performances of portland cement- aluminate cement - gypsum ternary cementitious system[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(03):459-462.[doi:10.15986/j.1006-7930.2016.03.026]
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粉煤灰对硅酸盐水泥-铝酸盐水泥-石膏三元体系性能的影响()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年03期
页码:
459-462
栏目:
出版日期:
2016-06-28

文章信息/Info

Title:
Effects of fly ash on the performances of portland cement- aluminate cement - gypsum ternary cementitious system
文章编号:
1006-7930(2016)03-0459-04
作者:
史 琛1; 何廷树1; 李益民2; 靳宝华1
(1.西安建筑科技大学材料与矿资学院,陕西 西安710055;2.陕西唐都水泥制品有限责任公司,陕西 西安710061)
Author(s):
SHI Chen 1;  HE Tingshu 1;  LI Yimin2;  JIN Baohua 1
(1.School of Materials and Minerals Xi’an Univ. of Arch . & Tech ., Xian 7100552, China; 2.Shaanxi Tangdu Cement Products Technology Co., Ltd, Xian 710061,China)
关键词:
三元体系; 粉煤灰; 钙矾石; 铝酸盐水泥
Keywords:
the ternary system;  fly ash ;  Aft ;  calcium aluminate cement
分类号:
TU398.9
DOI:
10.15986/j.1006-7930.2016.03.026
文献标志码:
A
摘要:
硅酸盐水泥-铝酸盐水泥-石膏三元体系具备明显的快硬、快凝、补偿收缩的性能，在该体系中掺入粉煤灰可以部分取代水泥降低成本，改善三元体系的工作性能，满足不同修复工程的需要．研究了不同掺量粉煤灰对三元体系的水化历程的影响，测试了浆体流动度、凝结时间以及硬化砂浆的强度和体积变形性能，并用X-射线衍射分析（XRD）对微观结构进行分析．结果表明：粉煤灰可以提高三元体系的流动性，并且延长其经时损失，当掺量大于20%时，三元体系的凝结时间明显延长．随着粉煤灰掺量的增加，硬化砂浆的强度降低，早期体积膨胀率减小但后期不收缩．综合考虑，粉煤灰的掺量控制在20%~30%，可以满足实际工程的需要．
Abstract:
The ternary system of Portland cement-aluminate cement-gypsum has obviously rapid hardening, fast-setting, shrinkage-compensating performances ．In this system, fly ash can partially replace cement to reduce the cost, and improve workability to meet the needs of different projects. In this paper, the effects of different fly ash amount on the hydration process of the ternary system have been studied via testing the fluidity, setting time, strength and expansion rate . The microstructure was studied by X-ray diffraction (XRD) analysis. The results show that the fly ash can promote the fluidity of the ternary system. When the fly ash amount is higher than 20%, the setting time of the ternary system increases obviously . With the increase of the amount of fly ash, the strength of the ternary system is decreased and the expansion rate is decreased in the early age . The amount of fly ash can meet the need of actual engineering when it remains between 20% ~30%

参考文献/References:

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备注/Memo

备注/Memo:
基金项目：陕西省自然科学基础研究计划基金资助（2014JQ7251）；西安建筑科技大学校科技基金资助（QN1421）；西安建筑科技大学校人才 基金资助（RC1341）
收稿日期：2015-08-31 修改稿日期：2016-04-08
作者简介：史琛（1985－），女，博士，讲师，主要从事建筑材料的研究．E-mail: shichen@xauat.edu.cn
更新日期/Last Update: 2016-08-05