1. Postdoctoral Fellow, Dept. of Structures for Engineering and Architecture, Univ. of Naples Federico II, Via Claudio 21, 80125 Naples, Italy.
2. Assistant Professor, Dept. of Structures for Engineering and Architecture, Univ. of Naples Federico II, Via Claudio 21, 80125 Naples, Italy (corresponding author).
3. Associate Professor, Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Univ. of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy; Hypucem S.r.l., P.le E. Fermi 1, Portici, 80055 Naples, Italy.