The Compression Test Results For Granite Epoxy Specimen Chapter 2 Answers

Chapter 5
5.1 Compression Test The compression test results for Granite epoxy specimens is documented and listed in Table 5.1.
Table 5.1 Compression Test results for Granite Epoxy Specimens Figure 5.1 shows the compressive strength plot of granite epoxy composite specimens without the inclusion of filler material. From the graph, it is observed that the compressive strength of the fabricated specimen’s increases up to 70% granite content and further decreases with the increase in epoxy percentage. The maximal compressive strength obtained is 112MPa for 70:30 granite epoxy ratio.
The graph of modulus of elasticity of granite epoxy specimens is represented in figure 5.2. The maximum elastic modulus of compressive specimens
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By analyzing the graphs, we find that the compressive strength of the specimens is higher for 10% addition of cast iron filler material. The maximum compressive strength value obtained is 123MPa for a Granite epoxy ratio of 75:25 for 10% filler material.
Table 5.2 Compressive Strength of Granite Epoxy Specimens with Cast Iron Filler Material
Figure 5.4 shows the elastic modulus plot of granite epoxy composite specimens with the presence of cast iron as filler particles. The modulus of elasticity is found to be higher for 10% of filler material. The elastic modulus of the specimens decreases with the increase in epoxy content. Maximum elastic modulus is found to be 4.365GPa for a ratio of 85:15 with 10% cast iron content; hence this material has very high stiffness values.
5.2 Tensile Test The tensile test results for all granite epoxy specimens are recorded and tabulated in the table
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From the plot, it is understood that damping values of the specimens have shown slight improvement by the addition of 5% cast iron particles as filler material. Higher damping values are obtained for granite epoxy ratios such as 80:20, 75:25, 60:40 and 50:50 with 5% filler material. The damping values results in a moderate drop with the increment in filler percentage in the specimen. The logarithmic decrement curve is similar to the damping curve with better values obtained by the addition of 5% filler

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