Issue 75

M. Ramos et alii, Fracture and structural integrity, 75 (2026) 399-434 ; DOI: 10.3221/IGF-ESIS.75.29

The data for this research were collected on five different dates after the pour to observe the growth, width, and length of the cracks. Therefore, the data from each date will be analyzed independently to identify when the greatest benefits for the concrete slabs were observed. Statistical analysis In this research, four statistical tests were used to analyze and express the relationships and significance of the data collected from the samples. These statistical tests help to understand the levels of significance in each sample analyzed, facilitating a consistent technical analysis. The SPSS software version 30.0.0 (Statistical Package for the Social Sciences) was used to perform all statistical tests on the quantitative data obtained during the research. The statistical tests used were the following:

D ESCRIPTIVE S TATISTICS

D

escriptive statistical analysis of data allows us to determine the number of data points, the maximum, the minimum, the mean, and the standard deviation, which are necessary to understand the nature of the quantitative data collected on different dates.

Date

Sample

N Minimum Maximum

Mean 1.5385

Standard Deviation

Width 13 Length 13 Width 12 Length 12 Width 10 Length 10 Length 9 Width 24 Length 24 Width 20 Length 20 Width 21 Length 21 Width 18 Length 18 Width 34 Length 34 Width 23 Length 23 Width 25 Length 25 Width 21 Length 21 Width 37 Length 37 Width 23 Length 23 Width 25 Length 25 Width 21 Length 21 Width 37 Length 37 Width 23 Length 23 Width 25 Length 25 Width 21 Length 21 Width 9

1.00 21.00 1.00 35.00 1.00 51.00 1.00 58.00 1.00 4.00 1.00 10.00 1.00 27.00 1.00 30.00 1.00 6.00 1.00 10.00 1.00 8.00 1.00 7.00 1.00 9.00 1.00 15.00 1.00 14.00 1.00 16.00 1.00 10.00 1.00 20.00 1.00 15.00 1.00 16.00

3.00

0.66023 104.39281 0.65134 81.73623 0.31623 38.79347 0.92796 49.32235 0.81650 93.95164 0.68056 82.02079 0.48305 41.79172 0.76696 55.86772 0.95766 97.63786 0.83168 80.65517 0.70000 45.77416 0.97346 60.35187 0.84274 103.20863 0.81488 81.92824 0.67823 46.16120 1.00712 59.36658 0.84274 104.29822 0.84816 82.26670 0.67823 46.37916 1.00712

MP

288.00

123.2308 1.3333 121.0833 1.1000 98.4000 1.6667 84.0417 1.4000 89.4000 1.3333 72.9524 2.0000 88.5556 1.8529 78.3824 1.6522 88.4348 1.6400 69.7600 2.3810 84.0476 2.1081 87.9189 1.8696 96.6522 1.7200 78.2400 2.7143 93.7619 2.1081 91.2162 1.9130 99.9130 1.7200 79.8800 2.7143 93.7619 1.88 123.2222

3.00

DM-01

325.00

7 days

2.00

DM-02

165.00

3.00

DM-03

199.00

3.00

MP

303.00

3.00

DM-01

339.00

14 days

2.00

DM-02

171.00

3.00

DM-03

208.00

4.00

MP

405.00

4.00

DM-01

352.00

21 days

3.00

DM-02

179.00

4.00

DM-03

211.00

4.00

MP

443.00

4.00

DM-01

366.00

28 days

3.00

DM-02

188.00

4.00

DM-03

222.00

4.00

MP

450.00

4.00

DM-01

370.00

35 days

3.00

DM-02

190.00

4.00

DM-03

222.00 59.36658 Table 12: Main width and length characteristics of sample designs at different ages of concrete.

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