PSI - Issue 70

V. Preethi et al. / Procedia Structural Integrity 70 (2025) 271–278

273

Nomenclature GF Glass Fibers RSM Response Surface Methodology

2. Data Set The quality and amount of input data play a pivotal role in the results of RSM models when predicting the mechanical properties of GFRC. For RSM to yield accurate and reliable predictions, it is essential that the dataset contains a wide range of material behaviors and variable interactions. In this study, key input parameters include cement content, water content, fiber volume fraction, and fiber aspect ratio. These independent variables are used to model critical response parameters such as compressive strength, split tensile strength, and flexural strength of GFRC. The aggregate content and its properties, type and dosage of super plasticizer, type of cement are assumed to be constant in this study. A total of 64 experimental observations, extracted from 10 peer-reviewed research articles, served as the foundational dataset for building and validating the RSM model. A detailed compilation of the dataset, including the source of each experimental result, is presented in Table 1.

Table 1. Database of Input and Output Parameters C W F % Asp

CS

FS

STS Reference

318 318 342 342 342 342 342 342 342 342 350 350 367 367 367 367 367 367 367 367 367 367 372 372 372

178 178 205 205 205 205 205 205 205 205 178 178 187 187 187 187 187 187 187 187 187 187 186 186 186

0

857 857 800 800 800 800

36.6

3.52 4.08 3.97 4.54 4.94 4.15 3.97 4.32 4.75 4.15 4.12 4.78 3.93 4.33 4.57 4.73 4.86 4.92 5.02 5.11 5.24 5.33

3.62 PR Srinivasa et. al. (2010)

0.03

42.46 25.62 24.63 24.25 25.32 25.62 25.06 24.51 24.51 48.56 24.22 24.44 25.21 26.16 27.05 27.25 27.39 28.27 28.46 23.93 26.07 41.5 27.2

4.2

0

2.52 MH Rosas et al. (2023)

1.2 2.4 3.6 1.2 2.4 3.6 0

2.55 2.86 2.64 2.52 2.63 2.86 2.71 2.54 2.59 2.62 2.65 3.53 3.63 3.65 3.69 3.75 4.91

1667 1667 1667 1667

0

857 857 857 857 857 857 857 857 857 857 857 857 857 857 857

4.23 PR Srinivasa et al. (2010)

0.03

0

2.52 Kalam and Ismail (2010)

0.5

1

1.5

2

2.5

3

3.5

4

4.5

0

3.344 3.587 3.654

3.22 SH Deshmukh et al. (2012)

0.03 0.06

3.31 3.63

26.6