JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Bloating Mechanism of Lightweight Aggregate with the Size
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Bloating Mechanism of Lightweight Aggregate with the Size
Lee, Ki Gang;
  PDF(new window)
 Abstract
The purpose of this study was to investigate the bloating mechanism of artificial lightweight aggregates with different sizes (ESA, effective surface area). Aggregates were produced using hard clay, stone sludge, and a bloating agent in order to observe the effect of the gradation of the artificial lightweight aggregates. Kerosene and amorphous carbon were used as bloating agent. The particle size of the produced aggregate ranged from 3 mm to 9 mm. With regard to the amount of bloating agent to be used, 2 ~ 6 parts by weight were used. The specific gravity, absorption rate, and the type of aggregates produced by rapid sintering at were determined. Microstructures were observed. When ESA had a value of 1 or below, kerosene, which has a high burning rate, was found to be advantageous for use as a bloating agent. When ESA had a value of 1 or above, carbon, which has a relatively low burning rate was found to be an advantageous bloating agent. It is thought that kerosene is more advantageous, as ESA decreases, for the production of aggregates having low water absorption rate.
 Keywords
Artificial lightweight aggregate;Bloating agent;ESA;Kerosen;Carbon;
 Language
English
 Cited by
 References
1.
Y. Y. Choi, C. H. Nam, B. G. Kim, and B. G. Kim, "Kiln for Production of Light Weight Aggregate from Coal Fly Ash," J. Korean Inst. Resour. Recycl., 16 [4] 61-7 (2007).

2.
Y. J. Kwon and K. G. Lee, "Analysis of Pore Characteristics on the Porous Body-Porosity Index of Ic and Is in Light Weight Aggregate," J. Korean Ceram. Soc., 41 [2] 176-81 (2004). crossref(new window)

3.
A. Escardino, A. Barba, A. Blasco, and F. Negre, "Oxidation of Black Core during Firing of Ceramic Ware: 4 Relationship between Effective Diffusity of Oxygen through Oxidised Layer and Properties Characterising its Porous Structure," Br. Ceram. Trans., 94 [3] 103 (1995).

4.
J. Pacini, Bloating and Black Coring, Laguna Clay Co, http://www.lagunaclay.com. Accessed on 22/12/2015.

5.
F. Negre, A. Barba, J. L. Amoros, and A. Escarkino, "Oxidation of Black Core during the Firing of Ceramic Ware. II: Process Kinetics," Br. Ceram. Trans., 91 [1] 5-11 (1992).

6.
A. Barba, F. Negre, M. J. Orts, and A. Escardino, "Oxidation of Black Core during the Firing of Ceramic Ware. III. Influence of the Thickness of the Piece and the Composition of the Black Core," Br. Ceram. Trans., 91 [2] 36-40 (1992).

7.
Y. J. Joo and M. S. Oh, "Unburned Carbon Combustion in the Production of Light Weight Sintered Fly Ash,"; pp. 91-96 in Proceeding of KSEE Conference, 2002.

8.
S. S. Cava, J. A. Cerri, C. A. Paskocimas, E. Longo, J. A. Varela, T. Mendoca, and C. G. Herter, "Supressing Black-Coring in Single-Fire Ceramic Tiles by Controlling Kiln Atmosphere"; pp. 15-8 in Qualicer 98 : v World Congress on Ceramic Tile Quality, 1998.

9.
A. Karamanov, P. Pisciella, C. Cantalini, and M. Pelino, "Influence of $Fe^{3+}$/$Fe^{2+}$ Ratio on the Crystallization of Iron-Rich Classes made with Industrial Wastes," J. Am. Ceram. Soc., 83 [12] 3153-57 (2000). crossref(new window)

10.
C. M. Riley, "Relation of Chemical Properties to the Bloating of Clay," J. Am. Ceram. Soc., 34 [4] 121-28 (1951). crossref(new window)

11.
J. Y. Park and Y. T. Kim, "Microstructural Observation of Artificial Aggregates at Various Sintering Atmospheres," J. Korean Cryst. Growth Cryst. Technol., 16 [2] 71-5 (2006).

12.
C.-C. Tsai, K.-S. Wang, and I.-J. Chiou, "Effect of $SiO_2$-$Al_2O_3$-Flux Ratio Change on the Bloating Characteristics of Lightweight Aggregate Material Produced from Recycled Sewage Sludge," J. Hazard. Mater., 134 [1] 87-93 (2006). crossref(new window)

13.
V. Adell, C. R. Cheeseman, A. Doel, A. Beattie, and A. R. Boccaccini, "Comparison of Rapid and Slow Sintered Pulverised Fuel Ash," Fuel, 87 [2] 187-95 (2008). crossref(new window)

14.
S. H. Kang, K. G. Lee, Y. T. Kim, and S. G. Kang, "Effect of Chemicophysical Properties of Carbon on Bloating Characteristics of Artificial Lightweight Aggregates Using Coal Ash," Ceram. Trans., 232 35-42 (2012).