Application of Fly Ash and Coal Gangue for Preparing High-Class Solid Insulating Brick by Roasting at Low Temperature Conditions

Abstract:

Abstract: The fly ash and coal gangue were used as main raw materials to roast solid insulating brick.Lower than solid clay brick (300 °C) which belongs to low temperature roasting , roasting time cycle is 24 h ,the ratio of fly ash and coal gangue is 60% :35%. the B7 admixing expanded pearlite compressive strength is 30.25 MPa . Strength reach general clay brick MU30 high-class level .Thermal coefficient of conduction is 0.4 W/(m.K), lower than general clay brick thermal coefficient of conduction 0.78 W/(m.K); In addition , B7 XRD pattern has evident quartz、mullite diffraction character peak and TGA-DTA pattern between 900°C~1200°C, following temperature rise, green body heat-absorbing , begin melt 、glass reduction .The result is high in strengths . SEM scanning show : after being roasted in 950°C , globular solid glass bead 、pearlitic drusy pearlite 、flocculation aluminosilicate phase and so on , raw materials particle interstices were filled with viscous hyaline, so that B7 turned out high strengths . Acidproof、alkaliproof、freezing test and strengths results show: the lasting quality of solid insulating brick was best.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 883-889
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.883
• Online since: January 2012
• Authors: Zi Fang Xu, Ming Xu Zhang, Jin Bo Zhu
• Keywords: Insulating Brick, Performance Analysis, Roasting, Solid Waste

References

[1] MA Ji-rong,TONG Ji-feng.Green building materials and Building materials Green[M].Beijing: Chemical Industry press,2003.（In Chinese）

[2] Zhang Wensheng , Chen Yimin. Journal of the chinese ceramic society , 2000,28 (2):160-164.（In Chinese）

[3] WU Qing-ren,WU Shan-gan. Eco-building and environment protection[M]. Beijing: Chemical Industry press,2003.（In Chinese）

[4] TAO You-sheng..Block brick tile, 2001(6):56-57.（In Chinese）

[5] Dong fa qin.The elementrary materials of eco-function[C].The papers of The International Forum on advanced Material Science and technology,2002,Anshan.( In Chinese)

[6] Liker Bekir Topcu, Burak Isikdag .Building and Environment 2005,40 (1):1-4

[7] OsmanU nala, Tayfun Uygunog lua, Ahmet Yildizb. Building and Environment 2007,42（1）: 584–590

[8] F. Collet, L. Serres, J. Miriel, M. Bart . Building and Environment 2006,41（2）:307–315

DOI: 10.1016/j.buildenv.2005.01.024

[9] Mo Liwu, Deng Min..Cement and Concrete Research 2006,36（3）:1992-1998 (In Chinese)

[10] Hanifi Binici , Orhan Aksogan b, Mehmet Nuri Bodur c, Erhan Akca d, Selim Kapur ., Construction and Building Materials 2007,21（1）:901–906

DOI: 10.1016/j.conbuildmat.2005.11.004

[11] Osman Unala, Tayfun Uygunog lua, Ahmet Yildizb., Building and Environment 2007,42（1）:584–590

[12] Dincyurek O, Mallick FH, Numan I. Building and Environment 2006，41（3）:307–315

[13] MUN KJ,HYOUNG W K, LEE CW.,.Constr Build Mater, 2007,21:1342-1350.