Mechanical Properties of Alite-Calcium Barium Sulphoaluminate Cement Concrete

Abstract:

In this paper, preparation and mechanical properties of Alite-calcium barium sulphoaluminate (Alite-C2.75B1.25A3 ) cement concrete were studied. The results showed the compressive strength of Alite-C2.75B1.25A3 cement concrete was much higher than that of Portland cement concrete, especially the early-age compressive strength. The 24-hour compressive strength of Alite-C2.75B1.25A3 cement concrete could reach 22.81Mpa for w/c=0.45, 17.29Mpa for w/c=0.50 and 17.04Mpa for w/c=0.55 respectively. They were about 50 to 65 percent higher than those of Portland cement concrete. The 7-day compressive strength could reach about 80 to 90 percent of 28-day strength for Alite-C2.75B1.25A3 cement concrete. The 28-day strength could reach 55.85Mpa for w/c=0.45, 48.01Mpa for w/c=0.50 and 44.21Mpa for w/c=0.55 respectively. The results of SEM showed the interfaces between the hardened cement paste and aggregates in Alite-C2.75B1.25A3 cement concrete were more compact than those in Portland cement concrete. Distribution of particulate bulk was more uniformity and a majority of clinker particles was wrapped by hydrated gel in Alite-C2.75B1.25A3 concrete. And, the structure of Alite-C2.75B1.25A3 cement concrete was much more compact than that of Portland cement concrete.

• Periodical: Key Engineering Materials (Volumes 400-402)
• Pages: 121-124
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.400-402.121
• Online since: October 2008
• Authors: Zong Hui Zhou, Ling Chao Lu, Xing Kai Gao, Xin Cheng
• Keywords: Alite-C_2.75B_1.25A₃ s Cement, Concrete, Mechanical Property, Structure

References

[1] P.E. Grattan-Bellew: Construction and Building Materials Vol. 10 (1996), p.3.

[2] Pierre-Claude AõÈtcin: Cement and Concrete Research Vol. 30 (2000), p.1349.

[3] C.S. Poon, Z.H. Shui: Cement and Concrete Research Vol. 34(2004), p.2215.

[4] M.H. Zhang, C.T. Tam and M.P. Leow: Cement and Concrete Research Vol. 33(2003), p.1687.

[5] Lu Lingchao, Chang Jun: The Journal of Synthetic Crystals Vol. 5(2004), p.16.

[6] Cheng Xin, Chang Jun and Lu Lingchao: Cement and Concrete Research Vol. 33(2003), p. (2009).

[7] Cheng Xin, Lu Lingchao: Journal of the Chinese Ceramic Society Vol. 32(2004), p.321.

[8] Chang Jun, Cheng Xin: Cement and Concrete Research Vol. 30(2000), p.77.