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	早龄期复合胶凝材料的裂纹扩展阻力分析
	王甲春 ; 阎培渝 ; WANG Jia-chun ; YAN Pei-yu
	2010-06-07 ; 2010-06-07
关键词	胶凝材料 裂纹扩展阻力 粉煤灰 早龄期 binder cracking resistance fly ash early age TU528
其他题名	Cracking Resistance Analysis of Complex Binder Pastes in Early Age
中文摘要	研究了不同组成的复合胶凝材料硬化浆体(硅酸盐水泥,硅酸盐水泥+粉煤灰,硅酸盐水泥+矿渣,硅酸盐水泥+硅灰,硅酸盐水泥+硅灰+粉煤灰)早龄期时裂纹扩展阻力的发展,探讨了粉煤灰掺量对裂纹扩展阻力的影响。结果表明:早龄期时,在相同水胶比条件下,掺加硅灰使胶凝材料体系裂纹扩展阻力明显降低,在低水胶比条件下,掺加一定量的粉煤灰能够明显增加体系的裂纹扩展阻力,掺加20%的粉煤灰能使胶凝材料具有较高的裂纹扩展阻力。; The cracking resistance of hardened complex binder pastes in early age is calculated with their fracture parameters K_(IC) and CMOD_c measured through three point bending test. The influence of type of mineral admixture and mixing percentage of fly ash on the cracking resistance of hardened binder paste is investigated. The results show that the cracking resistance of binder mixing with silica fume is decreased at the same W/B (water binder ratio), and that addition of fly ash can increase the cracking resistance of binder. In the condition of low w/B ratio the cracking resistance of complex binders is smaller than that of high W/B, and when fly ash weight percentage in binder is about 20%, the cracking resistance of the binder is higher than that of the other binders.; 863资助项目(2003AA33X100)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/46556]
专题	清华大学
推荐引用方式 GB/T 7714	王甲春,阎培渝,WANG Jia-chun,等. 早龄期复合胶凝材料的裂纹扩展阻力分析[J],2010, 2010.
APA	王甲春,阎培渝,WANG Jia-chun,&YAN Pei-yu.(2010).早龄期复合胶凝材料的裂纹扩展阻力分析..
MLA	王甲春,et al."早龄期复合胶凝材料的裂纹扩展阻力分析".(2010).

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