%0 Journal Article
%T Effect of Superfine Slag Powder on HPC Properties
%A Wu YAO
%A Jie LI
%A <br>WuYAO
%A JieLI
%J 材料科学技术学报
%D 2003
%I 
%X A superfine slag powder (SP) made from granulated blast furnace slag incorporating activators by using special millingtechnique, was used as supplementary cementitious material in high performance concrete (HPC), replacing part ofthe mass of normal Portland cement. The effects of the SP on the workability, mechanical and crack self-healingproperties of HPC were studied. The hydration process and microstructure characteristics were investigated by X-raydiffraction (XRD) and scanning electron microscopy (SEM) techniques, respectively. The crack self-healing capacitywas evaluated by Brazilian test. The test results indicate that the SP has especially supplementary effect on waterreducing and excellent property of better control of slump loss. The concrete flowability increases remarkably withthe increase of SP replacement level in the range of 20% to 50%. The compressive and splitting tensile strengthsof HPC containing SP are higher than the corresponding strength of the control concrete at all ages. The crackself-healing ability is highly dependent on SP content of HPC.
%K Superfine slag powder
%K High performance
%K Self-healing<br>超细钢渣粉
%K 高强混凝土
%K HPC
%K 流动性
%K 力学性质
%K 裂缝自动合扰
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=072E4EE924AA3260&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=117F81797AB182FC&eid=869807E2D7BED9EC&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=5