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Table 3 Mathematical models for each experiment obtained by experiment results with linear regression.

From: Use of Bentonite and Organobentonite as Alternatives of Partial Substitution of Cement in Concrete Manufacturing

Experiment

Representative equation

R 2

POR/BBT

 Normal consistency (%)

Y(x) = 29.98864 ± 0.15717 + 0.16833 ± 0.00797x

0.99225

 Workability-slump (mm)

Y(x) = 49.90874 ± 0.27287 − 0.51795 ± 0.01831x

0.99754

 Fresh concrete density (kg m−3)

Y(x) = 2415.47177 ± 2.08158 − 2.56863 ± 0.10551x

0.99415

 Water adsorption/absorption (%)

Y(x) = 3.36211 ± 0.01476 − 0.03422 ± 7.47965E−4x

0.99833

POR/BBTAPS

 Normal consistency (%)

Y(x) = 30.32881 ± 0.22071 + 0.23388 ± 0.01119x

0.99209

 Workability-slump (mm)

Y(x) = 49.59246 ± 0.21938 − 0.57769 ± 0.01112x

0.99871

 Fresh concrete density (kg m−3)

Y(x) = 2411.21326 ± 3.02437 − 2.71069 ± 0.15328x

0.98899

 Water adsorption/absorption (%)

Y(x) = 3.31769 ± 0.02035 − 0.03866 ± 0.000103x

0.99752

POR/BBTAEAPS

 Normal consistency (%)

Y(x) = 30.58139 ± 0.32074 + 0.26857 ± 0.01626x

0.98742

 Workability-slump (mm)

Y(x) = 48.76775 ± 0.28041 − 0.58528 ± 0.01421x

0.99794

 Fresh concrete density (kg m−3)

Y(x) = 2407.31531 ± 4.28739 − 2.96196 ± 0.21729x

0.98168

 Water adsorption/absorption (%)

Y(x) = 3.27142 ± 0.03162 − 0.04179 ± 0.000161x

0.99489