List of products by author: M. Ricci

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  Custom-Designed Instrumentations for Backfill Grouting Investigation

  Abstract: Backfill grouting investigation, to verify the grade of filling of the chamber between the extrados of the lining and the excavation profile, is a mandatory operation required by the Customers in tunneling works. A specific process based on Ultrasonic Tomography is proposed in association with a custom-designed Ground Penetrating Radar. The specific process and the custom-designed GPR have been...

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  Ground Water Control by Means of Pervious Backfill Grouting

  Abstract: Backfill grouting is a specific item defined by the Customers in tunnelling works to obtain different goals. In between these goals, it is worth to consider the ground water control: to release the water table pressure acting against the precast segmental lining, the backfill grouting must be designed as a pervious material. The actual standard grouting mixes (pea gravel with cementitious...

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