Mechanical Properties of Steam-Cured Concrete with Combined Mineral Admixtures

Abstract:

In precast concrete elements manufacturing, steam-cured concrete incorprating 30% mineral admixtures encountered the problem of too low demoulding compressive strength. To resolve it, this paper mainly studied the influence of mineral admixtures on the compressive strength, the tensile-splitting strength and the flexural strength of the steam-cured concrete. The experimental results indicated that, compared with steam-cured concrete incorprating mineral admixtures, the later strength of steam-cured concrete incorprating 0% mineral admixtures has lower increment degree and its increment of tensile-splitting strength and flexural strength inverted to some extent. The demoulding compressive strength is too low for the high volume fly ash concrete mixtures. The problem of too low demoulding compressive strength is solved by incorprating composites of ground blast furnace slag(GBFS) and fly ash. Different varieties of mineral admixture used in the concretes can produce a certain degree of potentiation.

• Periodical: Advanced Materials Research (Volumes 168-170)
• Pages: 1535-1538
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.168-170.1535
• Online since: December 2010
• Authors: Zhi Min He, Jun Zhe Liu, Tian Hong Wang
• Keywords: Fly Ash (FA), Ground Blast Furnace Slag, Mechanical Property, Steam-Cured Concrete

References

[1] H. Toutanjia, N. Delattec, S. Aggounb, R. Duvalb and A. Dansona: submitted to Journal of Cement and Concrete Research (2004).

[2] Ramezanianpour, A. A and Malhotra, V. M: submitted to Journal of Cement and Concrete Composites (1995).

[3] D.W.S. Ho, T. Cao: Seminar on the Structural Use of Precast Concrete (1994) p.10.

[4] D.W.S. Ho, C.W. Chua and C.T. Tam: submitted to Journal of Cement and Concrete Research (2003).

[5] Liu Baoju, Xie Youjun, Zhou Shiqiong and Li Jian: submitted to Journal of Cement and Concrete Research (2001).