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author：

Sun, H. (Sun, H..) [1] | Lin, T. (Lin, T..) [2] | Zhuo, K. (Zhuo, K..) [3] | Qian, J. (Qian, J..) [4] | Chen, X. (Chen, X..) [5] | Zhang, J. (Zhang, J..) [6] | Sun, Y. (Sun, Y..) [7]

Indexed by：

Scopus

Abstract：

The　hydration　process　of　calcium　sulfoaluminate　(CSA)　and　aluminate　cement　(CAC)　is　influenced　by　their　composition　and　calcium　sulfate　sources.　Increasing　the　calcium　sulfate　content　promotes　ettringite　generation;　however,　exceeding　the　optimal　threshold　may　cause　volume　instability.　This　study　aims　to　optimize　sulfate　levels　in　CSA　and　CAC　by　adjusting　the　SO3/Al2O3　molar　ratios.　Contour　maps　were　used　to　analyze　how　different　sulfate　sources　and　calcium　sulfate　levels　affect　strength　development,　ettringite　formation,　and　volume　stability.　Both　gypsum　and　anhydrite　similarly　improved　compressive　strength　in　CAC　and　CSA　at　equivalent　SO3/Al2O3　ratios.　However,　gypsum　caused　more　significant　expansion　than　anhydrite　at　equivalent　SO3/Al2O3　ratios,　as　indicated　by　the　higher　expansion　values　in　gypsum-rich　regions.　The　SO3/Al2O3　molar　ratio　is　crucial　for　regulating　ettringite　formation,　enhancing　compressive　strength,　and　ensuring　volume　stability　in　CSA　and　CAC　systems.　Maintaining　this　ratio　below　1.0　enabled　the　addition　of　sufficient　calcium　sulfate　to　achieve　optimal　performance.　©　2024　The　Authors

Keyword：

Calcium sulfate Calcium Sulfoaluminat cement Ettringite formation SO3/Al2O3 molar ratio

Community：

  • [ 1 ] [Sun H.]School of Advanced Manufacturing, Fuzhou University, Quanzhou, 362200, China
  • [ 2 ] [Lin T.]School of Advanced Manufacturing, Fuzhou University, Quanzhou, 362200, China
  • [ 3 ] [Zhuo K.]School of Advanced Manufacturing, Fuzhou University, Quanzhou, 362200, China
  • [ 4 ] [Qian J.]College of Materials Science and Engineering, Chongqing University, Chongqing, 400045, China
  • [ 5 ] [Chen X.]Key Laboratory of Coastal Urban Resilient Infrastructures (Shenzhen University), Ministry of Education, Shenzhen, 518060, China
  • [ 6 ] [Chen X.]College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China
  • [ 7 ] [Zhang J.]Key Laboratory of Coastal Urban Resilient Infrastructures (Shenzhen University), Ministry of Education, Shenzhen, 518060, China
  • [ 8 ] [Zhang J.]College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China
  • [ 9 ] [Sun Y.]Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong

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Source ：

Case Studies in Construction Materials

ISSN： 2214-5095

Year： 2024

Volume： 21

6 . 5 0 0

JCR@2023

Cited Count：

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

Affiliated Colleges：

海洋学院、先进制造学院 本学院/部未明确归属的数据

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