Abstract
Synthesis of autoclaved aerated concrete (AAC) has been carried out with carbide slag addition, and the carbide slag could be used as a main material to produce the AAC with the compressive strength about 2 MPa and the density below 0.6 g·cm−3. In this study, quartz sand acted as frame structure phase in the matrix, and quartz addition also influenced the Si/Ca of starting material. Tobermorite and CSH gel were formed readily at 62%, which seemed to enhance the compressive strength of samples. Curing time seemed to affect the morphology of phase produced, and specimen with the plate-like tobermorite formed at 10 h appeared to have a better compressive strength development than the fiber-like one at 18 h. The higher curing temperature seemed to favor the tobermorite and CSH gel formation, which also exerted a significant effect on the strength development of the samples. On the micro-scale, the formed CSH gel was filled in the interface of the matrix, and the tobermorite appeared to grow in internal-surface of the pores and interstices. The tobermorite or/and CSH formation seemed to densify the matrix, and therefore enhanced the strength of the samples.
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References
Daniel R G, Ali M M. Static and Cyclic Racking Performance of Autoclaved Aerated Concrete Cladding Panels[J]. J. Archit. Eng., 2006, 12: 12–23
Ronald D N, Lawrence R. Thermal Inertia Properties of Autoclaved Aerated Concrete[J]. J. Energy Eng., 1999, 125: 59–75
Robert M, Ronald D. Autoclaved Aerated Concrete Produced With Low NOx Burner/Selective Catalytic[J]. J. Energy Eng., 2001, 127: 37–50
Xiao L, Hu H. Flash-ash Autoclaved Aerated Concrete and Prevention of Common[J]. Journal of Jilin Institute of Architecture & Civil Engneering, 2009, 26: 1–6 (in Chinese)
Kurama H, Topcub I B, Karakurtb C. Properties of the Autoclaved Aerated Concrete Produced From Coal Bottom Ash [J]. J. Mater. Proces. Technol., 2009, 209: 767–773
Palanisamy R, Agamuthu P. Carbide Sludge Management in Acetylene Producing Plants by Using Vacuum Filtration[J]. Waste Management Research, 2002, 20: 536–540
Jin H, Wu Y, Guan W. Research on Producing Gas Concrete With Burnt Waste Residue[J]. Coal Technol., 2001, 20: 45–46 (Chinese)
Ma B, Xu Z, Study on a New Kind of Aerated Concrete Containing Efflorescence Sand-Phosphorus Slag-Lime[J]. J. Build. Mater., 1999, 2: 223–229 (in Chinese)
Mustafa A, Abdulkerim Y, Serdar K, et al. Influence of Zeolite Additive on Properties of Autoclaved Aerated Concrete[J]. Building and Environment, 2007, 42: 3 161–3 165
Cenk K. Utilization of Natural Zeolite in Aerated Concrete Production[J]. Cement & Concrete Composites, 2010, 32:1–8
Coleman N J, Trice C J, Nicholson J W. 11 Å Tobermorite From Cement Bypass Dust and Waste Container Glass: A Feasibility Study[J]. Int. J. Miner. Process, 2009, 93:73–78
Jing Z, Jin F, Yamasaki N, et al. Potential Utilization of Riverbed Sediments by Hydrothermal Solidification and Its Hardening Mechanism[J]. J. Environ. Manage., 2009, 90: 1 744–1 750
Jing Z, Ran X, Jin F, et al. Hydrothermal Solidification of Municipal Solid Waste Incineration Botom Ash With Slag Addition[J]. Waste Manage., 2010, 30: 1 521–1 527
Jing Z, Jin F, Yamasaki N, et al. Hydrothermal Synthesis a Novel Tobermorite-based Porous Material From Municipal Incineration Bottom Ash[J]. Ind. Eng. Chem. Res., 2007, 46: 2 657–2 660
Jing Z, Matsuoka N, Jin F, et al. Municipal Incineration Bottom Ash Treatment Using Hydrothermal Solidification[J]. Waste Manage., 2007, 27: 287–293
Jing Z, Ishida E H, Jin F, et al. Influence of Quartz Particle Size on Hydrothermal Solidification of Blast furnace Slag[J]. Ind. Eng. Chem. Res., 2006: 45, 7 470–7 474
Hemaly S A S E L, Taha A S, Didamony H E L. Influence of Slag Substitution on Some Properties of Sand-lime Aerated Concrete[J]. Journal of Materials Science, 1986, 21: 1 293–1 296
Dilmore R M, Neufeld R D. Autoclaved Aerated Concrete Produced with Low NOx Burner/Selective Catalytic Reduction Fly Ash[J]. Journal of Energy Engineering-ASCE, 2001, 127,2: 37–50
Wang Q, Chen Y, Li F, et al. Microstructure and Properties of Silty Siliceous Crushed Stone-lime Aerated Concrete[J]. Journal of Wuhan University of Technology, 2006, 21,2: 17–20
A Hartmann, J-Ch. Buhl, K van Breugel. Structure and Phase Investigations on Crystallization of 11 Å Tobermorite in Lime Sand Pellets[J]. Cement and Concrete Research, 2007, 37: 21–31
Siauciunas R, Baltusnikas A. Influence of SiO2 Modification on Hydrogarnets Formation During Hydrothermal Synthesis[J]. Cement and Concrete Research, 2003, 33:1 789–1 793
Stefano M, Elena B, Thomas A. The Real Structure of Tobermorite 11 Å [J]. European Journal of Mineralogy, 2001(13): 577–590
Jing Z, Maeda H, Loku K, et al. Hydrotherma Synthesis of Mesoporous Materials from Diatomaceous Earth[J]. AICHE, 2007, 53: 2 114–2 122
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Funded by the National Natural Science Foundation of China (Nos. 51272180, 51072138)
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Fan, J., Cao, D., Jing, Z. et al. Synthesis and microstructure analysis of autoclaved aerated concrete with carbide slag addition. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 29, 1005–1010 (2014). https://doi.org/10.1007/s11595-014-1034-0
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DOI: https://doi.org/10.1007/s11595-014-1034-0