Browse > Article
http://dx.doi.org/10.4191/kcers.2012.49.6.535

Colors and Crystals of ALC Surface with Green Body's Staying Time  

Chu, Yong Sik (Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology)
Seo, Sung Kwan (Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology)
Park, Soo Hyun (Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology)
Song, Hun (Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology)
Lee, Jong Kyu (Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.6, 2012 , pp. 535-541 More about this Journal
Abstract
ALC was fabricated using cement, lime, quartzite and a foaming agent via a hydrothermal reaction. ALC has various hydrothermal reaction products and many pores. The properties and colors of ALC surfaces were changed by various factors during ALC fabrication process. This study tested various staying times to analyze these phenomena. It was found that the staying time of green body influenced the properties of hydrothermal products and color of ALC surface. The longer staying time of green body, the lower tobermorite content and cumulative loss weight. An increase in holding time changed color and decreased whiteness of ALC surface. The relationship between whiteness and cumulative loss weight was very high (Coefficient, r = 0.95). It was surmised that tobermorite content was an important factor for enhancement of whiteness However, ettringite and quartzite did not contribute to whiteness.
Keywords
Color; ALC; Tobermorite; Quartzite; Hydrothermal reaction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Ilker Bekir Topc-ua, and Tayfun Uygunoglu, "Properties of Autoclaved Lightweight Aggregate Concrete," Building Environment, 42 4108-16 (2007).   DOI
2 A. Laukaitis and B. Fiks, "Acoustical Properties of Aerated Autoclaved Concrete," Appl. Acoustics, 67 284-96 (2006).   DOI   ScienceOn
3 H. Kurama, I.B. Topcu, and C. Karakurt, "Properties of the Autoclaved Aerated Concrete Produced from Coal Bottom Ash," J. Mater. Proc. Tech., 209 767-73 (2009).   DOI
4 W. Y. Kim, H. B. Ji, T. Y. Yang, S.Y. Yoon, and H. C. Park, "Preparation of Porous Mullite Composites through Recycling of Coal Fly Ash," J. Kor. Ceram. Soc., 47 [2] 151-56 (2010).   과학기술학회마을   DOI   ScienceOn
5 J. Alexanderson, "Relations between Structure and Mechanical Properties of Autoclaved Aerated Concrete," Cem. Conc. Res., 9 507-14 (1979).   DOI
6 F. Matsushita, Y. Aono, and S. Shibata, "Carbonation Degree of Autoclaved Aerated Concrete," Cem. Conc. Res., 30 [11] 1741-45 (2000).   DOI
7 V. S. Ramachandran, "Applications of Differential Thermal Analysis in Cement Chemistry;" pp. 170-76, Chemical Publishing Company, New York, 1969.
8 D. S. Klimesch, and A. Ray, "The use of DTA/TGA to Study the Effects of Ground Quartz with Different Surface Areas in Autoclaved Cement: Quartz Pastes. Part 1: A Method for Evaluating DTA/TGA Results", Thermochimica Acta, 289 [1] 41-54 (1996).   DOI
9 C.-F. Chang, J.-W. Chen, "The Experimental Investigation of Concrete Carbonation Depth," Cem. Conc. Res., 6 [9] 1760-67 (2006).