Table 1 Porosity, corrosion rate, and reduction coefficient of pore structure \({\eta }_{{pore}}\) of hardened OPC and AAS mortars

From: Mechanisms and kinetic model for steel corrosion in unsaturated cementitious materials

Mix ID

Corrosion rate in pore solution (μA/cm2)

Porosity (28 days)

Corrosion rate in saturated mortar at 28 days (μA/cm2)

Experimental \({\eta }_{{pore}}\) (28 days)

Porosity (56 days)

Corrosion rate in saturated mortar at 56 days (μA/cm2)

Experimental \({\eta }_{{pore}}\) (56 days)

NH-A5-Cl0.6

1.602

0.212

0.336

0.210

0.214

0.265

0.165

NH-A5-Cl1.2

2.555

0.217

0.371

0.145

0.219

0.355

0.139

NH-A5-Cl1.8

3.091

0.224

0.475

0.154

0.229

0.474

0.153

NH-A5-Cl2.4

3.411

0.235

0.579

0.170

0.235

0.549

0.161

NC-A5-Cl1.8

3.460

0.230

0.507

0.147

0.234

0.520

0.150

NSi-A5-Cl1.8

3.734

0.235

1.057

0.283

0.238

0.927

0.248

OPC-0.36-Cl1.8

3.777

0.200

0.921

0.244

0.204

0.836

0.221

  1. OPC refers to ordinary Portland cement and AAS refers to alkali-activated slag.