![\"Anna](\"https:\/\/old.cimne.com\/cvdata\/cntr2\/spc2\/dtos\/mdia\/News\/nl\/anna-ramon.jpg\")
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Experience gained during the analysis of swelling phenomena which damaged Lilla tunnel and Pont de Candí Bridge in Spain<\/strong>, showed that expansions were a result of gypsum crystal growth <\/strong>(Alonso et al., 2013; Alonso and Ramon, 2013; Ramon et al., 2017)<\/span>. Lilla tunnel and Pont de Candi viaduct are part of the high-speed railway Madrid-Barcelona. Both field cases involved the development of swelling strains in an active expanding layer in anhydritic rock<\/strong> where gypsum crystals precipitated in discontinuities under water saturated conditions.<\/p>\n Experience gained during the analysis of swelling phenomena which damaged Lilla tunnel and Pont de Candí Bridge in Spain<\/strong>, showed that expansions were a result of gypsum crystal growth <\/strong>(Alonso et al., 2013; Alonso and Ramon, 2013; Ramon et al., 2017). Lilla tunnel and Pont de Candi viaduct belong to the high-speed railway Madrid-Barcelona. Both field cases involved the development of swelling strains in an active expanding layer in anhydritic rock<\/strong> where gypsum crystals precipitated in discontinuities under water saturated conditions.<\/p>\n This experience and subsequent developments define the background and the previous knowledge to build up the research project.<\/p>\n ANHY_RISK highlights aspects which are not well-known <\/strong>of the process of crystal growth in anhydritic claystones. Solving this imperfect knowledge is the first objective of the project.<\/strong> The research also includes a laboratory investigation, the development of calculation methods accounting for<\/strong> the mentioned phenomena, being capable of reproducing <\/strong>the hydraulic, the mechanical and chemical processes in a coupled manner, and the proposition of criteria for a minimization of risks.<\/p>\n Funded by the Ministry of Science and Innovation as R&D Research Challenge in the 2018 Call<\/strong>, the project, which has a budget of 191.180,00 €, will end in August 2022.<\/p>\nAnna Ramon<\/a><\/strong>, a member of Geomechanics group<\/a><\/strong> at CIMNE, leads ANHY_RISK<\/a><\/strong> since September 2019. The project is about risk prediction and safe design in anhydritic rocks.<\/strong><\/p>\nRelated news<\/h3>\n