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Experimental Investigation on Rheological Properties in Completely Weathered Granite

Experimental Investigation on Rheological Properties in Completely Weathered Granite

pap342

S. M. Zhang / Y. Q. Zhu / Y. Gao / X. Q. Gao

Completely weathered granite(CWG) exibits very poor water stability, distinct rheological properties and noticable regional difference. In order to grasp the rheological properties in CWG along Guizhou to Guangxi railway, the Dongkeling tunnel on the railway taken as the background, test samples were taken on the site and processed into three groups with different water content in the laboratory for indoor rheological test. The multi-stage loading was adopted and the creep curves were obtained. The experiment results show that the rheology property comforms to the Burgus model, the loading method and stress level, especially the water content have effect on the rheology parameters. The creep parameters vary little under medium water content and below but greatly as the water content is near saturation.

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Year 2014
City Foz do Iguaçu
Country Brazil