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مجله STRUCTURE ، ژانویه 2018 فایل پی دی اف در 60 صفحه برخی از مطالب این نشریه : Post-Tensioned Concrete Construction Tendon Repairs and Modifications Fire Resistance of Flat Plate Voided Concrete Floor Systems Key Differences and Practical Applications for Cement and Gypsum Underlayments Support Restraints and Strength of Post-Tensioned Members Wood-Framed Shear Walls : Utilizing Force Transfer Around Openings Shrinkage-Compensating Concrete Designs Post-Installed Adhesive Anchor Systems : Reinforcing Bar Development Length using the Provisions of ACI 318 Structural Engineers and Climate Change 2018 IBC and 2018 IEBC Changes Related to Wood Construction Connecting Chicago’s “Second Shoreline” منبع دانلود از پیوست structure magazine 01 jan 2018.pdf

Cement and Concrete Nanoscience and Nanotechnology Laila Raki *, James Beaudoin, Rouhollah Alizadeh, Jon Makar and Taijiro Sato National Research Council Canada, Institute for Research in Construction / 1200 Montreal Road, Bldg M-20, Ottawa, Ontario K1A 0R6, Canada; E-Mails: jim.beaudoin@nrc-cnrc.gc.ca (J.B.); rouhollah.alizadeh@nrc-cnrc.gc.ca (R.A.); jon.makar@nrc-cnrc.gc.ca (J.M.); taijiro.sato@nrc-cnrc.gc.ca (T.S.) * Author to whom correspondence should be addressed; E-Mail: laila.raki@nrc-cnrc.gc.ca; Tel. (613) 991-2612; Fax: (613) 954-5984. Received: 24 December 2009; in revised form: 27 January 2010 / Accepted: 28 January 2010 / Published: 3 February 2010 Abstract: Concrete science is a multidisciplinary area of research where nanotechnology potentially offers the opportunity to enhance the understanding of concrete behavior, to engineer its properties and to lower production and ecological cost of construction materials. Recent work at the National Research Council Canada in the area of concrete materials research has shown the potential of improving concrete properties by modifying the structure of cement hydrates, addition of nanoparticles and nanotubes and controlling the delivery of admixtures. This article will focus on a review of these innovative achievements. Keywords: nanotechnology; concrete; cement; C-S-H; controlled release; carbon nanotubes; nanoparticles به نقل از کانال تلگرام civilca دانلود از پیوست نانو در سیمان و بتن.pdf