Issue 62

S. S. Ahmad et alii, Frattura ed Integrità Strutturale, 62 (2022) 408-425; DOI: 10.3221/IGF-ESIS.62.28

Figure 7: Setup of SEM test.

R ESULTS AND DISCUSSION

T

he experimental results of tested specimens will be analyzed and discussed in the following section depending on the parametric factors. Tab.3 summarized the experimental results of compressive and tensile strengths for 28 days at RT and elevated temperatures.

Compressive strength, F c , (MPa)

Splitting tensile strength, F t , (MPa)

Group

Mix ID

RT

400°C

800°C

RT 4.4 4.2 3.1 3.3 4.2 3.7 5.1 3.5 4.0 4.0 3.1 2.6 5.2 3.2 3.2

400°C

800°C

4.3 3.8 2.8 3.3 3.6 3.5 4.5 4.3 3.3 5.0 3.6 2.4 4.7 4.3 2.7

1.2 0.8 0.5 1.0 0.6 0.4 1.1 0.2 0.2 0.9 0.3 0.4 3.1 1.6

M1 M2 M3

48.3 52.6 45.1 49.1 56.6 53.2 60.5 70.1 42.0 41.5 56.3 60.7 38.8 35.2 35.5

63.4 58.7 55.1 56.5 67.7 54.9 74.0 74.3 45.6 52.6 57.8 69.4 63.6 45.9

27.9 36.4 25.2 36.1 41.8 20.2 46.3 36.3 27.6 28.1 41.3 38.6 31.1 18.3 24.7

Group – A

M2S1 M2S2 M2S3

Group – B

M1S1P1 M2S1P2 M3S1P3 M1S2P3 M2S2P1 M3S2P2 M1S3P2 M2S3P3 M3S3P1

Group – C

Group – D

Group – E

38 7 . 9 0.7 Table 3: 28 days compressive and splitting tensile strength results for all tested specimens at different temperatures .

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