1. Department of Civil and Environmental Engineering, Henry Samueli School of Engineering, E4130 Engineering Gateway, University of California, Irvine, 92697-2175 Irvine, California, United States
2. Department of Civil Engineering, University of Kassel, Mönchebergstraße 19, 34125 Kassel, Germany
3. Chemistry Department, University of Siegen, Adolf-Reichwein-Straße 2, 57068 Siegen, Germany