Durability of Concrete Made with Manganese Slag as Supplementary Cementitious Materials  

作　　者：刘荣进 丁庆军 陈平 杨光耀 

机构地区：[1]School of Materials Science and Engineering,Wuhan University of Technology [2]College of Materials Science and Engineering,Guilin University of Technology [3]Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education,Guilin University of Technology

出　　处：《Journal of Shanghai Jiaotong university(Science)》2012年第3期345-349,共5页上海交通大学学报（英文版）

基　　金：the National Basic Research Program(973) of China(No.2009CB326200);the Guangxi Technology and Science Development Program (Nos.11107024-4,0842003-17 and 0842003-3A)

摘　　要：This paper discusses mineral composition and pore microstructure characteristics of water-cooled manganese slag and its effects on durability of concrete. The Mn slag has an alveolate pore structure, and the ground Mn slag is characterized by multiangular shape which consists of a＇-C2S, C3M82, CaO.MnO-2SiOu and C2AS. Experimental results show that the Mn slag has potential hydraulic reactivity. Concrete made with Mn slag as supplementary cementitious materials （SCMs） exhibits very low strength loss and weight loss in the synthetic seawater corrosion and freezing-thawing cycle tests. The research provides useful reference for knowing about Mn slag and for applying Mn slag to improve the durability of concrete.This paper discusses mineral composition and pore microstructure characteristics of water-cooled manganese slag and its effects on durability of concrete.The Mn slag has an alveolate pore structure,and the ground Mn slag is characterized by multiangular shape which consists of α '-C 2 S,C3MS2,CaO.MnO.2SiO2 and C2 AS.Experimental results show that the Mn slag has potential hydraulic reactivity.Concrete made with Mn slag as supplementary cementitious materials(SCMs) exhibits very low strength loss and weight loss in the synthetic seawater corrosion and freezing-thawing cycle tests.The research provides useful reference for knowing about Mn slag and for applying Mn slag to improve the durability of concrete.

关 键 词：water-cooled manganese slag concrete durability glass phase mass fraction alveolate pore structure 

分 类 号：TU528.01[建筑科学—建筑技术科学] TU528.31