J Shanghai Jiaotong Univ Sci

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (3): 345-349.doi: 10.1007/s12204-012-1284-y

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Durability of Concrete Made with Manganese Slag as Supplementary Cementitious Materials

Durability of Concrete Made with Manganese Slag as Supplementary Cementitious Materials

LIU Rong-jin1,2 (刘荣进), DING Qing-jun1 (丁庆军), CHEN Ping2,3 (陈平), YANG Guang-yao2 (杨光耀)   

  1. (1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; 2.College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China; 3. Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education, Guilin University of Technology, Guilin 541004, Guangxi, China)
  2. (1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; 2.College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China; 3. Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education, Guilin University of Technology, Guilin 541004, Guangxi, China)
  • Online:2012-06-30 Published:2012-11-15
  • Contact: LIU Rong-jin1,2 (刘荣进) E-mail: liurj2008@sina.com

Abstract: 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-C2S, C3MS2, CaO· MnO·2SiO2 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.

Key words: water-cooled manganese slag| concrete durability| glass phase mass fraction| alveolate pore structure

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 α-C2S, C3MS2, CaO· MnO·2SiO2 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.

关键词: water-cooled manganese slag| concrete durability| glass phase mass fraction| alveolate pore structure

CLC Number: