Fig. 1
From: Doped bentonitic grouts for implementing performances of low-enthalpy geothermal systems
Diagram reporting the flexural (Rf) and uniaxial compressive (Rc) strengths at the fracture point for the starting and doped (+ 5 and + 10% of graphite powder) bentonitic grouts as a function of the load applied to the sample (Ff and Fc). Symbols are as follows: diamonds for the starting grout; squares for the grout + 5% of graphite powder; triangles for the grout + 10% of graphite powder. Open symbols are for tests at 14 days, filled symbols for those at 28 days