[1]谢友均,马昆林,刘运华,等.蒸养超细粉煤灰高性能混凝土性能试验研究[J].深圳大学学报理工版,2007,24(3):234-239.
 XIE You-jun,MA Kun-lin,LIU Yun-hua,et al.Experimental studies on capabilities of steam curing ultra-fine fly ash high performance concrete[J].Journal of Shenzhen University Science and Engineering,2007,24(3):234-239.
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蒸养超细粉煤灰高性能混凝土性能试验研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年3期
页码:
234-239
栏目:
土木建筑工程
出版日期:
2007-07-30

文章信息/Info

Title:
Experimental studies on capabilities of steam curing ultra-fine fly ash high performance concrete
文章编号:
1000-2618(2007)03-0234-06
作者:
谢友均1 马昆林1刘运华12龙广成1石明霞1
1)中南大学土木建筑学院,长沙 410075;
2)湖南省郴州市建设工程质量安全管理监督站,郴州 423000
Author(s):
XIE You-jun1MA Kun-lin1LIU Yun-hua12LONG Guang-cheng1and SHI Ming-xia1
1)School of Civil Engineering and Architecture,Central South University,Changsha 410075,P.R.China
2)Station of Supervision for Construction Engineering Quality of Chenzhou City,Chenzhou 423000,P.R.China
关键词:
高性能混凝土蒸养条件超细粉煤灰力学性能混凝土耐久性
Keywords:
high performance concrete steam curing ultra-fine fly ash mechanical property concrete durability
分类号:
TU 502.6;TU 528
文献标志码:
A
摘要:

研究蒸养条件下超细粉煤灰高性能混凝土的强度、弹性模量和应力-应变行为以及体积稳定性和耐久性能,结合微观测试手段,探讨超细粉煤灰在蒸养条件下的作用效应及其机制.试验结果表明,超细粉煤灰能显著提高混凝土的蒸养适应性,蒸养超细粉煤灰高性能混凝土的后期强度、弹性模量具有较好的增长率.与普通蒸养混凝土相比,蒸养超细粉煤灰高性能混凝土的脆性降低,塑性变形能力明显增强,干燥收缩明显降低,且抗氯离子渗透性能显著提高.超细粉煤灰可改善蒸养条件下混凝土的内部水化产物组成及其孔结构,降低混凝土的孔隙率, 提高混凝土耐久性.

Abstract:

This experimental study addresses the mechanical properties,including strength,elastic modulus and strain-stress curve in steam curing,volume stability,and durability,of ultra-fine fly ash high performcmce concrete(UFA-HPC).The effect and mechanism of ultra-fine fly ash in steam curing are also discussed.The results indicate that ultra-fine fly ash can improve the adaptability of concrete in steam curing condition.The? compressive strength and elastic modulus of? the UFA-HPC are in growth tendency in comparion with ordinary Portland concrete (OPC).The brittleness and dry shrinkage of the UFA-HPC are decreased, but the capability of plastic deformation is strengthened in steam curing,and the capability of the UFA-HPC resisting chloride ion attack is enhanced.Ultra-fine fly ash can improve inner composition of hydration product and porosity of concrete,and increase concrete durability in stream curing.

参考文献/References:

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更新日期/Last Update: 2007-12-06