2012
DOI: 10.3989/mc.2012.03611
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Caracterización de los morteros de relleno usados en diferentes túneles españoles

Abstract: SUMMARYThe main objective of this paper is to compare typical backfill mortars used in Spanish tunnels to fill the annular void left between the lining and the ground by the TBM. Initially, a new experimental program is outlined using material corresponding to 6 mixes from 4 tunnels. The results obtained indicate a considerable difference in the density and in the rheological properties of the mixes tested. According to the estimations performed, this leads to a difference of up to 67% on the potency required … Show more

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