Improving Mechanical Properties of Autoclaved Aerated Concrete by Sugar Sediment

Abstract:

The comparison of microstructure and mechanical properties between the autoclaved aerated concrete (AAC) and the autoclaved aerated concrete consist of sugar sediment (AAC-SS) was investigated in this work. The microstructure of AAC and AAC-SS was analyzed by the scanning electron microscopy (SEM). The mechanical properties of AAC and AAC-SS were focused on the compressive strength, the density, the water absorption and the flexural strength. To comfirm the tobermorite phase, the phase formation of the samples was tested using X-ray diffraction (XRD). It was found that the microstructure of AAC and AAC-SS surface was the finer needle-like crystalline morphology. The compressive strength (5.9 N/mm²) and flexural strength (1.82 N/mm²) of AAC-SS were higher than that of the AAC (5.0 N/mm² and 1.64 N/mm²). While, the value of density (0.60 g/cm³) and humidity (23.59%) of AAC-SS had little less than that of the AAC (0.61 g/cm³ and 24.11%). The increasing of the tobermorite phase, which was added by the sugar sediment, had affected to the improvement of the mechanical properties. The specimens of both AAC and AAC-SS were claimed in quality class of 4, which based on the Thai Industrial Standard 1505-1998.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 1266-1269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.1266
• Online since: September 2013
• Authors: Atthakorn Thongtha, Somchai Maneewan, Chantana Punlek, Yothin Ungkoon
• Keywords: Autoclaved Aerated Concrete, Mechanical Property, Microstructure, Sugar Sediment

References

[1] Q.H. Zhao: J. Struct. Eng. ASCE Vol. 130(2) (2004), p.271.

[2] J. Alduaij, K. Alshaleh, M. N. Haque and K. Ellaithy: Concrete Comp. Vol. 21 (1999), p.453.

[3] H. Kurama, I.B. Topcu and C. Karakurt: J. Mater. Process. Tech. Vol. 209 (2009), p.767.

[4] X.Y. Huang, W. Ni, W.H. Cui, Z.J. Wang and L.P. Zhu: Constr. Build. Mater. Vol. 27 (2012), p.1.

[5] O. Koronthalyova: Constr. Build. Mater. Vol. 25(2) (2011), p.879.

[6] N.Y. Mostafa: Cem. Concr. Res. Vol. 35(7) (2005), p.1349.

[7] H. Kurama, I.B. Topu and C. Karakurt: J. Mater. Process. Technol. Vol. 209(2) (2009), p.767.

[8] M.B. Guo and X. Zheng: J. Build. Mater. Vol. 2(3) (1999), p.223.

[9] L.F. Xian, C.Y. Zhi and L.S. Zong: J. Southwest Jiaotong Univ. Vol. 43(6) (2008), p.810.

[10] W. Yan, Y. Jie, C.J. Chun and P.C. Qi: J. Wuhan Univ. Technol. Mater. Sci. Vol. 15(2) (2000), p.58.

[11] Y. Ungkoon, C. Sittipunt, P. Namprakai, W. Jetipattaranat, K.S. Kim and T. Charinpanitkul: J. Ind. Eng. Chem., Vol. 13 (7) (2007), p.1103.

[12] A. Thongtha, K. Angsukased and T. Bongkarn: Smart Mater. Struct. Vol. 19 (2010), p.124001.