Table 4 Compressive strength mutation between two- and four-layer specimens compared to single-layer specimens.
Single layer Specimen | Compressive strength (MPa) | Extension (mm) | Combined Specimens (Two Layers) | Compressive strength (MPa) | Extension (mm) | Variation in compressive strength % | Variation in strain % |
|---|---|---|---|---|---|---|---|
S.H 20% | 16.972 | 3.341 | T.H 20% | 21.654 | 1.5756 | 28% | -6% |
S.G 20% | 13.687 | 1.4076 | T.G 20% | 20.166 | 1.747 | 47% | -32% |
S.T 20% | 16.516 | 1.2345 | T.T 20% | 19.358 | 1.4617 | 17% | 56% |
S.H 50% | 36.393 | 9.4873 | T.H 50% | 38.033 | 5.4931 | 5% | 23% |
S.G 50% | 36.639 | 1.5706 | T.G 50% | 48.502 | 2.9424 | 32% | 14% |
S.T 50% | 36.935 | 1.6325 | T.T 50% | 52.007 | 1.7144 | 41% | 34% |
Single Specimen | Compressive strength (MPa) | Extension (mm) | Combined Specimens(Four Layers) | Compressive strength (MPa) | Extension (mm) | Variation in compressive strength % | Variation in strain % |
|---|---|---|---|---|---|---|---|
S.H 20% | 16.972 | 3.341 | F.H 20% | 20.336 | 2.088 | 20% | -21% |
S.G 20% | 13.687 | 1.4076 | F.G 20% | 19.224 | 1.8042 | 40% | -27% |
S.T 20% | 16.516 | 1.2345 | F.T 20% | 18.866 | 1.5761 | 14% | 32% |
S.H 50% | 36.393 | 9.4873 | F.H 50% | 39.573 | 5.5556 | 9% | 4% |
S.G 50% | 36.639 | 1.5706 | F.G 50% | 47.432 | 1.8602 | 29% | 6% |
S.T 50% | 36.935 | 1.6325 | F.T 50% | 44.549 | 3.0417 | 21% | 22% |
