This volume presents articles from the International Conference on Building Materials; ICBM2024 with the theme "Building Materials in the 21st Century", held at Hanoi in Vietnam, from 31st October to 03rd November. The conference is a diversified-topic forum for international and Vietnamese researchers, academics, industry professionals, experts and policy makers etc. to share their views, and to learn from others about recent and current developments in science and technology of building materials in the 21st century and also to discuss actions required for forthcoming building materials as well as construction development in the future. The book highlights recent research on cement, concrete, refractory materials, fire-resistant materials, paints, glass, product quality testing methods, environmental protection and recycling wastes in building material industry.