Study on the Influences of Foaming Gypsums Performance

Abstract:

Utilizing the chemical reaction principles H₂O₂ was catalyzed by MnO₂, instead of being catalyzed by warm water. In the gypsum slurry, due to the chemical reaction of hydrogen peroxide a large number of bubbles were produced, and the material was self-foaming. The H₂O₂ foaming agent and the method of foaming affected the performance of the foaming gypsum, such as mechanical strength, apparent density, thermal conductivity, and the pore structure of foaming gypsum. The result showed that with adding H₂O₂, the apparent density and mechanical strength decreased; the different water/plaster weight ratio ranged from 0.65 to 0.75, affecting the foaming process. The thermal insulation property of FGD gypsum is related to the content of H₂O₂, the water/plaster weight ratio, and the pore structure of foaming gypsum.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 222-227
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.222
• Online since: January 2013
• Authors: Bin Huang, Yi Zhang, Dong Xu Li
• Keywords: Bulk Density, Foaming Agent, Pore Structure, Porosity, Thermal Conductivity (TC)

References

[1] MA Lili, GONG Xianzheng, GAO Feng, WANG Zhihong. Resource Depletion and Environmental Impact Analysis of Plasterboard. JOURNAL OF WUHAN UNVIERSITY OF TECHNOLOGY, 2012, 34(3): 120~123.

[2] LI Linlin, SU Xingwen, LI Xiaoyang. Preoaration of Composite Cementitious Material for Building Artifical Reefs Concrete from Angang Steel Slag and Granulated High Furnace Slag, 2012, 31(2): 117~122.

[3] HUANG Wei, TAO Zhendong, WANG Xiaobo. Use of FGD gypsum in wall materials. Brick & Tile, 2010, 5: 5~9.

[4] LU Guozhong, ZHOU Lijuan, CHEN Jianchao. Preparation of the light-weight and high-strength desulfurization gypsum block. New Building Materials, 2011, 8: 25~28.

[5] LI Qingbin, PAN Zhihua. Present Status of Research on Lightweight Thermal Insulating Materials and Its Developing Trend. Bulletin of Chinese ceramic society, 2011, 30(10): 1089~1093.

[6] Adnan Çolak. Density and strength characteristics of foamed gypsum[J]. Cement & Concrete Composites, 2000, 22: 193~200.

DOI: 10.1016/s0958-9465(00)00008-1

[7] WANG Yuanyuan, MU Ru, XU Lei, TIAN Weiling. Study on effect of foaming agents on characteristics of desulphurization building gypsum. New Building Materials, 2011 (2): 32~35.

[8] Alena Vimmroá, Martin Keppert, Luboš Svoboda, Robert Çerný. Lightweight gypsum composites: Design strategies for multi-functionality. Cement & Concrete Composites, 2011, 33: 84~89.

DOI: 10.1016/j.cemconcomp.2010.09.011

[9] M. Serhat Baspnar, Erhan Kahraman. Modifications in the properties of gypsum construction element via addition of expanded macroporous silica granules. Construction and Building Materials, 2011, 25: 3327-3333.

DOI: 10.1016/j.conbuildmat.2011.03.022

[10] Juris Skujans, Andris Vulans, Uldis Iljins, Aivars Aboltins. Measurements of heat transfer of multi-layered wall construction with foam gypsum. Applied Thermal Engineering, 2007, 27: 1219~1224.

DOI: 10.1016/j.applthermaleng.2006.02.047