[1]关辉,吕建福,巴恒静.氯氧镁水泥基材料体积稳定性研究[J].深圳大学学报理工版,2009,26(3):296-300.
 GUAN Hui,LU Jian-fu,and BA Heng-jing.On the volume stability of Magnesium oxychloride cement-based materials[J].Journal of Shenzhen University Science and Engineering,2009,26(3):296-300.
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氯氧镁水泥基材料体积稳定性研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第26卷
期数:
2009年3期
页码:
296-300
栏目:
土木建筑工程
出版日期:
2009-07-31

文章信息/Info

Title:
On the volume stability of Magnesium oxychloride cement-based materials
文章编号:
1000-2618(2009)03-0296-05
作者:
关辉吕建福巴恒静
哈尔滨工业大学土木工程学院,哈尔滨 150001
Author(s):
GUAN HuiLU Jian-fuand BA Heng-jing
School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,P.R.China
关键词:
氯氧镁水泥基材料潮湿膨胀体积稳定性
Keywords:
magnesium oxychloride cement-based materialshygroexpansivityvolume stability
分类号:
TU 525.09
文献标志码:
A
摘要:
采用不同掺合料与骨料配制氯氧镁水泥基材料,分别在干燥和潮湿环境下,对氯氧镁水泥基材料的干燥收缩和潮湿膨胀变形进行实验研究与变形机理分析.结果表明,在干燥状态下,氯氧镁水泥净浆42 d的收缩率达到1 400×10-6,单掺稻壳粉后收缩率明显提高,单掺粉煤灰后收缩率提高不多,单掺砂和复掺硅灰及粉煤灰后收缩率明显降低;在潮湿状态下,氯氧镁水泥净浆42 d的膨胀率为6 898×10-6,单掺稻壳粉水泥的膨胀率比氯氧镁水泥净浆略有提高,单掺粉煤灰、砂和复掺硅灰及粉煤灰的水泥膨胀率均明显降低.
Abstract:
The shortage of volume stability resists a wide range of applications of magnesium oxychloride cement-based materials(MOCM).Many admixtures were adopted to manufacture the MOCM.The drying shrinkage and swelling expansion of the MOCM in dry and wet conditions were investigated separately.The X-ray analysis,SEM and EDAX were applied to research the mechanism of deformation.The results show that the drying shrinkage of magnesium oxychloride cement paste at 42 d was 1 400×10-6 under drying conditions.When the powder of rice husk was added into the magnesium oxychloride cement,the drying shrinkage of the magnesium oxychloride cement increased significantly;and when the fly ash was incorporated,the drying shrinkage increased just a little;however,when the sand,or the mixture of silica fume and fly ash was mixed into magnesium oxychloride cement,the drying shrinkage reduced greatly.The hygroexpansivity of the magnesium oxychloride cement on 42 d reached 6 898×10-6 under wet conditions.Due to the rice husk added, the hygroexpansivity of the MOCM increased just a little,and when the fly ash,the sand,the mixture of silica fume and fly ash was mixed into the magnesium oxychloride cement,the hygroexpansivity of MOCM significantlydecreased.

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备注/Memo

备注/Memo:
收稿日期:2008-11-03;修回日期:2009-06-03
基金项目:国家自然科学基金资助项目(50678053 )
作者简介:关辉(1974-),男(汉族 ),黑龙江省哈尔滨市人,哈尔滨工业大学博士生. E-mail:hit.china@yahoo.com.cn
通讯作者:巴恒静(1938-),男(满族 ),哈尔滨工业大学教授、博士生导师. E-mail:bahengjing2001@yahoo.com.cn
更新日期/Last Update: 2009-08-26