2020 The 4th International Conference on Building Materials and Materials Engineering (ICBMM 2020) will be held in Barcelona, Spain during September 24-26, 2020 (http://www.icbmm.org/). The conference is co-organized by NOVA University of Lisbon, Portugal and technically supported by University of Lisbon, Portugal and University of Minho, Portugal. Publication History: ICBMM 2019: MATEC Web of Conferences (ISSN: 2261-236X), Volume 303 (2019). ICBMM 2018: MATEC Web of Conferences (ISSN: 2261-236X), Volume 278 (2019). Indexed by Ei Compendex. ICBMM 2017: IOP Conference Series: Materials Science and Engineering (ISSN: 1757-899X), Volume 264. Indexed by Ei Compendex & Scoupus. Publication: ICBMM 2020 accepted and registered papers will be published in Conference Proceedings, which will be indexed by Ei Compendex, Scopus, etc. Submission: Please submit your paper to: http://confsys.iconf.org/submission/icbmm2020 Any question about the conference, please contact conference secretary by email: icbmm@cbees.net Speakers information can be found via: http://www.icbmm.org/speaker.html Contact us: Ms. Elva Zhang E-mail: icbmm@cbees.net Tell: +86-28-87577778(China)/+001-6699004528(USA) For more detailed information, please visit our website http://www.icbmm.org/. We are looking forward to your participation!