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Table 2 Flexural strengths (Rf) at the fracture point obtained on the starting and doped (+ 5 and + 10% of graphite powder) bentonitic grouts
From: Doped bentonitic grouts for implementing performances of low-enthalpy geothermal systems
Ff (N) | Rf (N/mm2) | |
|---|---|---|
Pure starting material | ||
June 30, 2016 (14 days) | 490 | 1.84 |
July 14, 2016 (28 days) | 500 | 1.88 |
July 14, 2016 (28 days) | 560 | 2.10 |
Starting material + 5% | ||
June 30, 2016 (14 days) | 930 | 3.49 |
July 14, 2016 (28 days) | 980 | 3.68 |
July 14, 2016 (28 days) | 1080 | 4.05 |
Starting material + 10% | ||
June 30, 2016 (14 days) | 820 | 3.08 |
July 14, 2016 (28 days) | 1060 | 3.98 |
July 14, 2016 (28 days) | 1000 | 3.75 |