【正文】 Society 2004)5) The time for mercializing a product is long. . the concrete, which can eliminate the need for reinforcing bars, is projected to be mercialized by approximately 2020. IV. Sustainable Construction At an annual production rate of billion tons, the cement industry contributes about 5% to global anthropogenic CO2emissions. Additives such as belite, calcium sulfoaluminate and calcium aluminoferrite (BASF 2008) have been found to reduce the CO2emissions by nearly 25% in the production phaseA wall made of nanomodified concrete during a cold weather season could potentially be used as a thermal insulator when the outside temperature falls or used as a conductor when the ambient temperature inside the building is low, thereby reducing the energy load required for conditioning the building interior. With further development of LED amp。 OLED technology and progress in the insulating materials and smart glazing, the vision for buildings to meet their own energy requirement will bee a reality. V. Future Projection of Nanotechnology in Construction There is substantial money flowing into nanorelated research from multinational corporations and venture capital investments [3, 5]. Many of the world’s largest panies such as IBM, Intel, Motorola, Lucent, Boeing, Hitachi, etc. have all had significant Nanorelated research projects going on, or launched their own nanotech initiatives. By 2015, the National Science Foundation estimates that nanotechnology will have a $1 trillion effect on the global economy. To achieve this marketsized prediction, industries will employ nearly two million workers towards advancements in many Nano materials, Nano structures, and Nano systems. The time needed for mercializing a product is long because industries may prefer monitoring development in research agencies and laboratories before making substantial investments. Furthermore, nanotechnology development, particularly in conjunction with biomimetic research will lead to truly revolutionary approaches to design and production of materials and structures with much improved efficiency, sustainability and adaptability to changing environment. VI. Conclusion Research in nanotechnology that is related to construction is still in its infancy。 however, this paper has demonstrated the main benefits and barriers that allow the effect of nanotechnology on construction to be defined. Recent years of Ramp。D have shown massive investments Nanoconstruction. The activities in Nano related products for the construction industry are not well marketed and are difficult for industry experts to identify. A largescale and visible initiative from nanoscience and nanotechnology in the construction area could help seed construction related nanotechnological development. Focused research into the timeous and directed research into nanotechnology for construction infrastructure should be pursued to ensure that the potential benefits of this technology can be harnessed to provide longer life and more economical infrastructure. This paper concludes with a roadmap and strategic action plan on how nanotechnology can have its biggest impact on the field of civil engineering. References[1] Mann, S. (2006). “Nanotechnology and Construction,” Nanoforum Report. , May 30, 2008.[2] Balaguru, P. N., “Nanotechnology and Concrete: Background, Opportunities and Challenges.” Proceedings of the International Conference – Application of Technology in Concrete Design, Scotland, UK, , 2005.[3] Goddard III, ., Brenner, ., Lyshevski, . and Iafrate, . “Properties of HighVolume Fly Ash Concrete Incorporating NanoSiO2.” Cement and Concrete Research, , , 2004.[4] Beatty, C. (2006). “Nanomodification of asphalt to lower construction temperatures.” NSF Workshop on Nanotechnology, Material Science and Engineering, National Science Foundation, Washington, DC.[5] ASCE. (2005). “Report card for America’s infrastructure. American society of civil engineers” “”(Mar. 8, 2008).[6] Baer, D. R., Burrows, P. E., and ElAzab, A. A. (2003). “Enhancing coating functionality using nanoscience and nanotechnology.” Prog. Org. Coat., 47(3–4), 342–356.[7] Bartos, P. J. M. (2006). “NANOCONEX Roadmapnovel materials.” Centre for Nanomaterials Applications in Construction, Bilbao, Spain “” (Jan. 13, 2008).[8] Shah, S. P., and A. E. Naaman. “Mechanical Properties of Glass and Steel Fiber Reinforced Mortar.” ACI Journal 73, no. 1 (Jan 1976): 5053.[9] Saafi, M. and Romine, P. (2005).”Nano and Microtechnology.” Concrete International, Vol. 27 No. 12, p 2834.[10] Sobolev, K. and Gutierrez, M. F. (2005). “How Nanotechnology can Change the Concrete World,” American Ceramic Society Bulletin, vol. 84, no. 10, p. 1416.[11] Lau, KinTak, and David Hui. “The revolutionary creation of new advanced materials—carbon nanotube posites.” Composites: Part B 33, no. 4 (2002): 263277.19