The Durability of Alkali-Activated Materials in Comparison with Ordinary Portland Cements and Concretes:A Review  

作　　者：Aiguo Wang Yi Zheng Zuhua Zhang Kaiwei Liu Yan Li Liang Shi Daosheng Sun 

机构地区：[1]Anhui Key Laboratory of Advanced Building Materials,Anhui Jianzhu University,Hefei 230022,China [2]Key Laboratory for Green and Advanced Civil Engineering Materials and Application Technology of Hunan Province,College of Civil Engineering,Hunan University,Changsha 410082,China [3]Jiangsu Subote New Materials Ltd.Co.,Nanjing 211103,China

出　　处：《Engineering》2020年第6期695-706,共12页工程（英文）

基　　金：Financial support from the National Natural Science Foundation of China(51778003,51878263,and 51608004);Opening Foundation of State Key Laboratory of High Performance Civil Engineering Materials(2018CEM002);Anhui Provincial Education Department(gxfxZD2016134);Anhui Province Higher Education Revitalization Program([2014]No.11).

摘　　要：China is the largest producer and user of ordinary Portland cement(OPC),and the rapid growth of infrastructure development demands more sustainable building materials for concrete structures.Alkali-activated materials(AAMs)are a new type of energy-saving and environmentally friendly building material with a wide range of potential applications.This paper compares the durability of AAMs and 0 PC-based materials un der sulfate attack,acid corrosion,carb on ation,and chloride penetratio n.Different AAMs have shown distinct durability properties due to different compositions being formed when different raw materials are used.According to the calcium(Ca)concentration of the raw materials,this paper interprets the deterioration mechanisms of three categories of AAMs:calcium-free,low-calcium,and calcium-rich.Conflicts found in the most recent research are highlighted,as they raise concerns regarding the consistenee and long-term properties of AAMs.Nevertheless,AAMs show better durability performances than OPC-based materials in general.

关 键 词：Alkali-activated materials GEOPOLYMER DURABILITY Ordinary Portland cement Deterioration mechanism 

分 类 号：TU528[建筑科学—建筑技术科学]