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The authors have completed structural and compositional analysis of Roman hydraulic concrete using large cores taken from a variety of maritime structures. In 2005 an 8 m 3 block of hydraulic, pozzolanic concrete was built in the sea at Brindisi (Italy), applying the materials and procedures specified by the Roman architect Vitruvius. Cores were taken at 6 months and 12 months after construction and subjected to the same analyses as the first-century BC cores from pilae associated with the Villa of the Domitii Ahenobarbi at Santa Liberata. Results show that a slight variation on the Vitruvian formula yields results closest to the Roman material, and that substantial curing requires 12 months.

serves as good platforms for academics, researchers, and engineers to meet and exchange innovative ideas and information on all aspects of nanotechnology and material technologies.Nanotechnology is the study of manipulating matter on an atomic and molecular scale.Nanotechnology entails the application of fields of science as diverse as surface science, organicchemistry, molecular biology, semiconductor physics, microfabrication, etc. There is much debateon the future implications of nanotechnology. Nanotechnology may be able to create many newmaterials and devices with a vast range of applications, such as in medicine, electronics,biomaterials and energy production. On the other hand, nanotechnology raises many of the sameissues as any new technology, including concerns about the toxicity and environmental impact ofnanomaterials, and their potential effects on global economics, as well as speculation about variousdoomsday scenarios. These concerns have led to a debate among advocacy groups and governmentson whether special regulation of nanotechnology is warranted.Materials science is an interdisciplinary field applying the properties of matter to various areas of science and engineering. This scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties. It incorporates elements of applied physics and chemistry. With significant media attention focused on nanoscience and nanotechnology in recent years, materials science has been propelled to the forefront at many universities. It is also an important part of forensic engineering and failure analysis. Materials science also deals with fundamental properties and characteristics of materials.The selected, peer reviewed paper from ICNTAM 2013 focus on four topics: (1) Material Science and Engineering, (2) Nanotechnology Technology, (3) Manufacturing and Mechanical Engineering, and (4) Information Technologies and Computational Procedures in Engineering Researches and Design. We expect that the conference and its publications will be a trigger for further related research and technology improvements in this importance subject.The Organizing Committee thanks the sponsors, government agencies and sponsors that contributed definitely to the conference success.We hope that ICNTAM 2013 will be successful and enjoyable to all participants. We look forward to seeing all of you next year at the ICNTAM. The Abstract.The use of photocatalytic products for surface coating of buildings contributes to the sustainability of building interventions, due to the reduction of some atmospheric pollutants and self-cleaning attitude. The world market produces a wide range of coatings, applied in limited thickness, transparent and opaque, high initial performance, although data on their durability are still missing. The knowledge of the performance over time of such innovative products is necessary according to the new EU Regulation No. 305/2011, which introduced for construction works, the seventh requir...

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