| Microstructure and Composition of Hydration Products of Ordinary Portland Cement with Ground Steel-making Slag |
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| 作者姓名： | 李永鑫 |
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| 作者单位： | China Building |
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| 基金项目： | SupportedbyNationalKeyBasicResearchDevelopmentProject (973High techplan) (No .2 0 0 1CB6 10 70 3) |
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| 摘 要： | 1 IntroductionSteel makingslagisthewasteofsteel makingindus tryandnearlysixteenmilliontonssteel makingslagisproducedinChinaperyear1] .Justasflyashandblastfurnaceslag ,itisoneofthreekindsofdominantindustrywastesinourcountry .Eventhoughsteel makingslagce menthasdevelopedformorethantwentyyearsinCh ina2 ,3 ] ,comparedwithothertwowastes ,thestudyandap plicationonsteel makingslagincementandconcreteareinsufficientyet.Moststeel makingslagcementsarepre paredbyinter grindingprocess ,sotheparticlesiz…
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| 收稿时间： | 1 March 2003 |
| 修稿时间： | 18 October 2003 |
Microstructure and composition of hydration products of ordinary Portland cement with ground steel-making slag |
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| Li?Yong-xin,Chen?Yi-min,Zhang?Hong-tao,He?Xing-yang,Wei?Jiang-xiong,Zhang?Wen-sheng.Microstructure and Composition of Hydration Products of Ordinary Portland Cement with Ground Steel-making Slag[J].Journal of Wuhan University of Technology. Materials Science Edition,2003,18(4):76-79. |
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| Authors: | Li Yong-xin Chen Yi-min Zhang Hong-tao He Xing-yang Wei Jiang-xiong Zhang Wen-sheng |
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| Affiliation: | LI Yong-xin CHEN Yi-min ZHANG Hong-tao HE Xing-yang WEI Jiang-xiong ZHANG Wen-sheng China Building Materials Academy |
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| Abstract: | The effect of ground steel-making slag on microstructure and composition of hydration products of ordinary Portland cement (OPC) was investigated by mercury intrusion porosimetry (MIP),X-ray diffraction (XRD) and differential thermal analysis (DTA).Results show that ground steel-making slag is a kind of high activity mineral additives and it can raise the longer-age strength of OPC mortar.The total porosity and average pore diameter of OPC paste with ground steel-making slag increase with the increase of the amount of ground steel-making slag replacing OPC at various ages,while after 28 days most pores in OPC paste with ground steel-making slag do not influence the strength because the diameter of those pores is in the rang of 20 to 50nm.The hydration mechanism of ground steel-making slag is similar to that of OPC but different from that of fly ash and blast furnace slag.The hydration products of ground steel-making slag contain quite a lot of Ca(OH) 2 in long age. |
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| Keywords: | ground steel-making slag microstructure composition hydration products |
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