预应力锚索砂浆包裹体20年夹层未凝现象及其成因初探

doi:10.13722/j.cnki.jrme.2014.s2.041

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Abstract A phenomenon of grout interlayer without solidification was founded in the in-situ anchor excavation experiment at Manwan hydropower. Three test methods were applied to resolve the problem，which were XRD，SEM and embedded closed hydration tests. Through analyzing the results of tests，some conclusions are achieved. The anchorage grout with the unsolidified interlayer shows just like a sandwich，which is composed of three parts. The up and down parts are hardwares，and the central part is a soft interlayer about 1–2 cm thick. The interlayer is linear extended in the mortar inclusions from the beginning to the end. Many tricalcium silicates are founded in the grout interlayer by XRD and SEM tests. The results indicate that the unsolidified phenomenon is closed to early stage of the cement hydration reaction process. It is proven by the indoor airtight hydration test and XRD results that just embedded closed condition and containing clay in cement can not lead to unsolidified phenomenon.

Key words： hydraulic engineering grout interlayer without solidification X-ray diffraction(XRD) scanning electron microscope(SEM) embedded closed hydration test

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	Articles by authors
	REN Aiwu1
	WANG Yanshu2
	FAN Haizhu3
	JIA Zhixin1
	WANG Yujie1
	JIANG Zhaoqun2

Cite this article:

REN Aiwu1,WANG Yanshu2,FAN Haizhu3, et al. A PHENOMENON OF ANCHORAGE GROUT INTERLAYER WITHOUT SOLIDIFICATION IN TWENTY YEARS AND ITS REASONS ANALYSIS[J]. , 2014, 33(S2): 3724-3729.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.041 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3724

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