Construction and Building Materials 160 (2018) 725–732 Contents lists available at ScienceDirect Construction and Building Materials journal homepage: www.elsevier.com/locate/conbuildmat Effects of calcined layered double hydroxides on carbonation of concrete containing ﬂy ash a,b,⇑ a,b a,b Ping Duan , Chunjie Yan , Wei Zhou Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, China highl i ghts graphical a bstrac t Carbonation resistance of ﬂy ash blended concrete was investigated. LDHs catch CO and ﬁx them in concrete. LDHs enhances the carbonation resistance of ﬂy ash blended concrete. Carbonation depths were determined and assessed using different methods. A linear relationship was found between carbonation depth and pH values of pore solution. article i nfo abstract Article history: Carbonation resistance of ﬂy ash blended concrete incorporating LDHs was investigated. X-ray diffrac- Received 9 February 2017 tion, IR-spectroscopy and thermal analysis were employed to characterize the component and structural Received in revised form 4 June 2017 changes of LDHs and cement paste before and after carbonation. Carbonation depths were assessed using Accepted 17 November 2017 the TG-DSC method combining the results obtained from
Construction and Building Materials – Elsevier
Published: Jan 30, 2018
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