The Impact of Extended Heat Exposure on Rapid Sulphoaluminate Cement Concrete Up To 120 degrees C Academic Article uri icon

abstract

  • This study examined the stability of rapid sulphoaluminate cement concrete (R-SACC) when exposed to heat for extended periods of time. The physicochemical processes present in R-SACC as a function of temperature were determined through various tests. Thegeneral behavior of rapid sulphoaluminate cement (R-SAC) at a range of temperatures is summarized. The results show that observing color change could be a simple way to identify deterioration of R-SACC, along with the rebound hammer. The matrix formation of ettringite was broken and the mass of the hydrated product decreased with heat exposure; the major mineral composition of the paste consisted of CaSO4, CaCO3 and -C2S; and the interface between aggregate and paste in the R-SACC become loosely structured with cracks. Between 50C and 120C, the rapid sulphoaluminate cement (R-SAC) paste first expanded and then shrank, and the shrinkage rate of R-SAC was much greater than that of R-SACC.

published proceedings

  • PERIODICA POLYTECHNICA-CIVIL ENGINEERING

author list (cited authors)

  • Tchekwagep, J., Mukhopadhyay, A. K., Wang, S., Huang, S., & Cheng, X.

citation count

  • 2

complete list of authors

  • Tchekwagep, Jean Jacques Kouadjo||Mukhopadhyay, Anol K||Wang, Shoude||Huang, Shifeng||Cheng, Xin

publication date

  • 2021