Studies on blended cement with a large amount of fly ash |
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| Authors: | Xinghua FuWenhong Tao Chunxia YangWenping Hou Youjun DongXuequan Wu |
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| Affiliation: | a Department of Materials Science and Engineering, Jinan University, Jinan, Shandong 250022, People's Republic of China
b Nanjing Institute of Chemistry Technology, Nanjing 210009, People's Republic of China |
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| Abstract: | The influence of the contents of the clinker, activators and fly ash on the properties of blended cement with high fly ash content was studied. Experimental data from X-ray diffraction and pore size distribution indicated that the main hydration product of the fly ash blended cement was C-S-H gel, ettringite and a small amount of Ca(OH)2. The volume porosity of the pores with diameter bigger than 0.1 μm was lower than that of the micro pores and gel pores with diameter lower than 0.05 μm. The amount of chemical combined water has increased with the curing age duration, while the content of Ca(OH)2 has reduced after 7 days. |
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| Keywords: | Hydration Pore size distribution Physical properties Fly ash Chemical binding of water |
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