Research on the Carbonation of Cement Paste Modified with Layered Double Hydroxides

Abstract:

The carbonation of concrete is one of the factors that weaken the durability of the concrete. Accelerated carbonation method was utilized to study the strength and carbonation resistance of cement paste containing different contents of layered double hydroxides treated in different ways. The results show that the LDH improves the carbonation resistance of the cement paste obviously. With 2% addition of the LDH, cement paste shows enhanced carbonation resistance in early age. When LDHs is added, the strength of cement paste decreases to some extent.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 706-710
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.706
• Online since: May 2012
• Authors: Liang Jun Chen, Xiao Xing Chen, Wei Chen
• Keywords: Carbonation Depth, Carbonation Resistance, Cement Paste, Layered Double Hydroxides (LDHs)

References

[1] Qin Weizu. Big doping fly ash concrete and high performance concrete. Concrete and cement products, 1995, (2) : 22-26. (In Chinese)

[2] Sun Qingping. The characteristics of concrete with dig doping fly ash. Concrete, 1997, (2) :-23. (In Chinese)

[3] Huang Shiyuan. The characteristics of concrete with fly ash and its application in concrete products (below). Concrete and cement products, 1991, (2) : 25-28. (In Chinese)

[4] Xu Xichang, Wu xueli. The anti-freeze capability of cement concrete with fly ash. Journal of Shanghai building materials institute, 1990, (4) : 397-406. (In Chinese)

[5] Chen Jinping. Research on carbonization properties of high performance concrete with big doping fly ash, Construction Technology, July 2010 (4) : 87-89(In Chinese)

[6] Wang Lijing, Xu Xiangyu, David G. Evans, etc. The preparation of LDHs intercalated with dihydrogen phosphate and its performance of selective absorption of the infrared, Journal of inorganic chemistry, 2010, 26 (6) : 970-976.(In Chinese)